GUARANTEE

All Vufold external wooden doors and frames, double glazed sealed units, and hardware components are guaranteed for a full 10 years against the occurrence of manufacturing faults, all subject to correct installation and regular maintenance and care in use as detailed below.

Door and frame components

All our timber components are manufactured using the latest technology to reduce warping or twisting - this is referred to in the trade as ‘engineered construction’. This means we use finger jointed or laminated hardwood sections in the core and then they are over veneered. This method has proven to be stronger and less likely to cause movement of the timber than using solid sections.

No two trees produce identical grains or colour of wood, and this adds to the beauty of a natural product. We therefore cannot guarantee that all door and frame components will look exactly the same in grain and colour.

Veneers are natural products and prone to deterioration if not adequately protected with superior quality finish. If water penetrates the finish this may cause cracks to appear or splits. In heavy moisture areas or during heavy rain periods, this may cause oak to become darker in colour or have black marks.

Unfortunately, we cannot change the properties or performance of the timber components which are natural products. We cannot therefore accept claims for any variation in the components, or cracks or splits that may appear due to moisture going into the timber. What is more, warping of wood is not a defect if it is not more than ¼ inch (6mm) when it is in its installed position.

Protective finish and maintenance

IMPORTANT: You would normally be expected to maintain the protective finish between 2 – 5 years depending on the weather and location. Therefore, the finish on your Vufold door set must be checked every six months for deterioration, and re-coated if necessary. The finish must be regularly maintained, to ensure moisture does not enter the timber during the life of the product. 

Following installation; we recommend the door and frame components are fully inspected for any surface area damages that may have compromised the protective coating, and then re-seal where necessary. 

Elite Unfinished Oak Door sets

All unfinished oak door sets must be fully finished according to our guidelines BEFORE the door set is installed. Failure to do so will invalidate this guarantee.

Please note: the use of steel wool or allowing steel or iron fragments to come into contact with the untreated oak timber or veneers may cause oxidisation resulting in black staining.

We recommend finishing external unfinished oak door sets with a medium or high build microporous wood coating system. This will usually consist of one coat of base stain and two coats of topcoat, in a wood or paint colour of your choice, to ALL faces and edges of the doors and frame components to ensure the product is fully sealed: including the tops and bottom edges of the doors.

You can purchase the Vufold-sigma High Build microporous Wood Coating system to finish your Vufold set from our Maintenance section or alternatively use a proprietary brand such as Dulux, Sadolin or Sikkens.

We do not recommend finishing with oil, wax, quick drying products such as Ronseal or any finish other than a medium to high build microporous wood finishing system. Please note: the clearer the finish the more regular maintenance will be required.

Elite Pre-Finished Oak Door sets

Pre-finished oak door sets have been factory finished using a high build microporous wood coating system and are ready for installation. This finish offers good UV protection.

All pre-finished Vufold door sets must be well maintained and re-coated as and when necessary, before the coating breaks down. Moisture must not be allowed to penetrate the timber. The length of time between re-coating depends greatly on exposure to weather and the direction the bi-fold doors face. The coating will last longer in a sheltered or north facing site. However, if the site is south facing, or in a heavy weather exposure area, the finish will need maintaining more frequently.

Vufold now offer oak maintenance kits, under the Vufold sigma brand, which contains everything you need to maintain your pre-finished oak, bi-fold door or French door set. The regular use of Vufold-sigma Wood care milk 3 to 4 times a year will prolong the period before re-coating is necessary.

We do not recommend re-finishing with oil, wax, quick drying products such as Ronseal or any finish other than a medium to high microporous wood finishing system.

Master Pre-Finished White and Grey Hardwood Door sets

The white and grey external door sets have been pre-finished with a high build microporous opaque Satin wood finish. This finish offers good UV protection.

All pre-finished Vufold door sets must be well maintained and re-coated as and when necessary, before the coating breaks down. Moisture must not be allowed to penetrate the timber. The length of time between re-coating depends greatly on exposure to weather and the direction the bi-fold doors face. The coating will last longer in a sheltered or north facing site. However, if the site is south facing, or in a heavy weather exposure area, the finish will need maintaining more frequently.

Vufold now offer white and grey maintenance kits, under the Vufold sigma brand, which contains everything you need to maintain your pre-finished white or grey, bi-fold door or French door set. 

The regular use of Vufold-sigma Wood care milk 3 to 4 times a year will prolong the period before re-coating is necessary.

We do not recommend re-finishing with any finish other than a medium to high build microporous opaque wood finish finishing system. The RAL (colour match) paint code for the white finish is 9016 Traffic White and the grey finish is RAL 7016 Anthracite grey.

Installation

Our ready-to-assemble external wooden doors are supplied with all the essential items and virtually everything pre-machined. This design allows for simple on-site assembly by a competent DIYer or experienced trades person(s).

IMPORTANT: The outer frame head of our external bi-fold door sets needs to be securely fixed to the building lintel as the door sets are top hung. The frame needs to be installed perfectly square and level on all planes into the opening.

Please ensure you have read the installation instructions supplied with your door set. To make life even easier, we also have a ‘How to Install a Wooden External bifold door’ installation video.

Following the completion of installation, all protective film and tape is to be removed immediately from the doors, frames, and glass. We cannot accept any claims relating to adhesive marks left from the protective film following installation.

Double glazed sealed units

All glass is supplied to the GGF (glass and glazing federation) standards.

To reduce carbon emissions from the home and to keep heating and cooling bills down, the government has recommended that all manufacturers use special Low E thermal glass within the sealed unit to comply with Building Regulations Part L.

This glass is coated with a special substance to comply with the above and occasionally, and in certain light conditions may produce transient visual effects, this can sometimes look like a transparent film or haze, and make the glass appear cloudy. This is very infrequent and only affects a minority of door sets. But as a company, we do have to comply with the new regulations which are for the benefit of all, and this is not a defect.

Due to demands for better thermal efficiency, it is normal for condensation to form on the outside of the glazing units, to the exterior side of the property. This demonstrates that the glass is performing as it should by reducing the transfer of heat from the internal side of the property to the external side of the property, this is not a defect. For any condensation forming to the inside of the property, this is normally due to high levels of moisture in the air and / or insufficient ventilation in the room, the moisture is then forming on the cold surface. If condensation is forming inside the glazing unit (between the panes of glass) it is likely that the glazing seal has been compromised.

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments.

Glass must be regularly maintained and cleaned to stop the break down of the glass or seals. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.

Visual distortions caused by reflections in toughened glazing units are a natural phenomenon and not a fault.

Toughened, or coated glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched. The glass used in sealed units is a processed glass therefore certain blemishes are unavoidable.

Hardware components

The exterior hardware in your Vufold bi-fold door set can deteriorate from everyday use, and also because of the weather and the local environment. That’s why regular maintenance of your door hardware is even more important if you live in severe environments like coastal marine areas and some industrial locations. Even stainless-steel products require maintenance to prevent deterioration in these environments.

We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every three months if you live in a marine environment, or every six months if you live in a more general location otherwise your guarantee will not be valid.  

Tracks and bearings

Once your installation has been completed, and before fully operating your door set, please carefully remove any debris / swarf from the top and bottom tracks to ensure nothing comes into contact with any moving components.

After cleaning the tracks, using a microfibre cloth, apply a small amount of lubricant such as silicone spray to the inner lip of each side of the track. Make sure that the wheels pass through the lubricant and that it spreads evenly along the track.

Extra lubricant can be added around the bearings. Adding lubricant in this way reduces wear, improves smoothness, and gives additional protection against corrosion of track and bearings. In addition, remove all surface contamination by wiping all visible track surfaces with a soft, damp cloth and mild detergent, then wipe with a clean cloth. In severe environments, apply a thin film of corrosive preventative such as silicone spray, and wipe with a clean microfibre cloth.

Stainless steel bearings are made from hardening grade stainless steel, and although this material performs much better than plated steel, it can corrode unless it is maintained as shown above.

Hinges, pivots and drop (slide) bolts

Using a microfibre cloth, wipe down the visible surfaces with warm soapy water and then rinse off by wiping with a clean, damp cloth. Applying a thin film of light machine oil or silicone spray, wiping with a dry cloth to remove any excess, will help to maintain the original lustre of the metal finish. Be careful not to get these liquids on the timber as this can cause staining. 

The sliding pin and lock cylinder on the drop bolts should be maintained using silicone spray by directing the nozzle into the applicable areas. Always hold a cloth directly under the nozzle to prevent any over spray or liquid running onto the timber. 

Multi-point door locks and handles

The multi-point door lock is operated by lifting the handle and turning the key. The lock is secured by top and bottom hook bolts and a central deadbolt engaging with the lock keeps. The lock should operate just as smooth with the access door in the open position as what it does when it is fully closed.  

It is important that if you feel any resistance when lifting the handle, you do not continue to operate the doors as this may eventually cause the lock to fail and will invalidate your guarantee.  

All moving parts should be lubricated using a silicone spray.  

The handles should be regularly cleaned with a soft damp microfibre cloth to remove any dust or grime taking care not to scratch the surface.  

If you experience problems with locking or unlocking the doors, first eliminate actual lock problems by opening the access door and pulling the handle upwards and then turning the key. If this can be done, the lock is operating normally, and the problem is likely to be due to incorrect door alignment / adjustment.  

Door operational adjustments

When your doors are first installed, they may require some fine tuning to achieve a smooth operation. All our wooden external door sets are supplied with easy to adjust hinges.

From time to time, due to changes in the seasons or because of wear and tear in use, or if the lock is difficult to operate, it may also be necessary to carry out some hinge adjustments.  

If you experience any difficulty operating your doors, including, opening, closing, sliding, and locking of your doors, do not continue to use your doors as this may cause further issues and damages.

All Vufold external aluminium doors and frames, powder coating finish, double and triple glazed sealed units and hardware components are guaranteed for a full 15 years against the occurrence of manufacturing faults, all subject to correct installation, regular maintenance and care in use as detailed below.   

Powder coating finish and maintenance 

All our Aluminium external Bifold and French door sets are supplied fully powder coated in a satin finish providing a high quality and durable finish, unless otherwise specified. Our standard range of colours are Anthracite grey – RAL 7016, Hipca white – RAL 9910 (Status only), and Jet black – RAL 9005. If you have selected an alternative custom colour option and require the colour and RAL code, please contact a Vufold team member and they will provide this for you.

To maintain the external aluminium powder-coated finish, wash regularly with soapy water and then dry off with a soft lint-free cloth. As a minimum, the external surfaces must be washed at least every three months, and monthly if within five miles of the sea or in an industrial area. Our general recommendation would be to wash the external aluminium every time you clean your windows, which should normally be more regularly than the minimum requirement. 

The powder coating is not guaranteed unless the doors are installed at least 800 metres away from the sea.  

We cannot accept any claims for damages, including scratches to the powder coating and aluminium reported 72 hours following delivery and / or after installation has commenced.  

Installation

Our ready-to-assemble aluminium doors are supplied with all the essential items, most hardware factory fitted and everything pre-machined. This design allows for simple on-site assembly by a component DIYer or experienced trades person(s).  

The outer frame needs to be securely fixed into the opening perfectly square and level on all planes. The aluminium bifold doors are bottom hung / rolling, the weight of the doors is supported via the bottom carrier and threshold.

IMPORTANT: The threshold must be sufficiently packed to ensure there are no dips or rises along the full length of the bottom track, and even more importantly, where the bottom carrier rests when closed. When fixing the frame head, ensure there is no bowing.  

Please ensure you have read the installation instructions supplied with your door set. To make life even easier, we also have a ‘How to Install an Aluminium External bifold door’ installation video available (Status range only). 

Double and Triple glazed sealed units

All glass is supplied to the GGF (glass and glazing federation) standards. 

To reduce carbon emissions from the home and to keep heating and cooling bills down, the government has recommended that all manufacturers use special Low E thermal glass within the sealed unit to comply with Building Regulations Part L.  

This glass is coated with a special substance to comply with the above and occasionally, and in certain light conditions may produce transient visual effects, this can sometimes look like a transparent film or haze, and make the glass appear cloudy. This is very infrequent and only affects a minority of door sets. But as a company, we do have to comply with the new regulations which are for the benefit of all, and this is not a defect.  

Due to demands for better thermal efficiency, it is normal for condensation to form on the outside of the glazing units, to the exterior side of the property. This demonstrates that the glass is performing as it should by reducing the transfer of heat from the internal side of the property to the external side of the property, this is not a defect. For any condensation forming to the inside of the property, this is normally due to high levels of moisture in the air and / or insufficient ventilation in the room, the moisture is then forming on the cold surface. If condensation is forming inside the glazing unit (between the panes of glass) it is likely that the glazing seal has been compromised.

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments. 

Laminated glass is also classed as safety glass and compromises of multiple layers of glass sandwiched together. Due to its high strength, this prevents the glass from breaking into large pieces. If the glass breaks, it will produce a ‘spider web’ effect similar to what is commonly seen in shattered car windscreens. Laminated glass will also increase the sound rating insulation.

Glass must be regularly maintained and cleaned to stop break down of the glass or seals. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.

Visual distortions caused by reflections in toughened glazing units are a natural phenomenon and not a fault.

Laminated, toughened, or coated glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched.  The glass used in sealed units is a processed glass therefore certain blemishes are unavoidable. More blemishes may be visible in laminated glass due to the layered construction.

Hardware components

The exterior hardware in your Vufold bi-fold door set can deteriorate from everyday use, and also because of the weather and the local environment. That’s why regular maintenance of your door hardware is even more important if you live in severe environments like coastal / marine areas and some industrial locations.  

We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every three months if you live in a marine environment, or every six months if you live in a more general location otherwise your guarantee will not be valid.

Tracks and bearings 

Once your installation has been completed, and before fully operating your door set, please carefully remove any debris / swarf from the top and bottom tracks to ensure nothing comes into contact with any moving components.  

After cleaning the tracks, using a microfibre cloth, apply a small amount of lubricant such as silicone spray to the inner lip of each side of the track. Make sure that the wheels pass through the lubricant and that it spreads evenly along the track. 

Extra lubricant can be added around the bearings. Adding lubricant in this way reduces wear, improves smoothness, and gives additional protection against corrosion of track and bearings. In addition, remove all surface contamination by wiping all visible track surfaces with a soft, damp cloth and mild detergent, then wipe with a clean cloth. In severe environments, apply a thin film of corrosive preventative, such as silicone spray, and wipe with a clean microfibre cloth.  

Hinges

Using a microfibre cloth, wipe down the visible surfaces with warm soapy water and then rinse off by wiping with a clean, damp cloth. Applying a thin film of light machine oil or silicone spray, wiping with a dry cloth to remove any excess, will help to maintain the original lustre of the metal finish. Be careful not to get these liquids on the aluminium as this may affect the powder coating.  

Multi-point door locks and handles 

The multi-point door lock is operated by lifting the handle and turning the key. The lock is secured by hook bolts and a central deadbolt engaging with the lock keeps. The lock should operate just as smooth with the access door in the open position as what it does when it is fully closed.  

It is important that if you feel any resistance when lifting the handle, you do not continue to operate the doors as this may eventually cause the lock to fail and will invalidate your guarantee.

All moving parts should be lubricated using a silicone spray.

The handles should be regularly cleaned with a soft damp microfibre cloth to remove any dust or grime taking care not to scratch the surface.

If you experience problems with locking or unlocking the doors, first eliminate actual lock problems by opening the access door and pulling the handle upwards and then turning the key. If this can be done, the lock is operating normally, and the problem is likely to be due to incorrect door alignment.

Door operation

All our aluminium Bifold and French door sets have been pre-assembled in our factory. They are installed into a steel framed testing rig where they are glazed / toe and healed and then fully operated, including checking the doors lock and unlock smoothly. The door sets are then part dismantled, packaged up ready for dispatch and simple onsite assembly.

When operating your doors, it is vital that you close the folding sections of your door set first, using the hinge / d-pull handle only and then turn the swivel handle to secure the folding sections in place, closing the access door last. Never pull or push the doors along the track using the lead / daily access door as this will affect the balance of the doors and may damage the hardware.

If you experience any difficulty operating your doors, including, opening, closing, sliding and locking of your doors, do not continue to use your doors as this may cause further issues and damages. Please contact a member of the customer service team so we can assist you further.

All Vufold external composite Bifold doors and frames, triple glazed sealed units, and hardware components are guaranteed for a full 10 years against the occurrence of manufacturing faults, the external powder coating finish is guaranteed for 15 years, all subject to correct installation and regular maintenance and care in use as detailed below.  

Door and frame components   

All our timber components are manufactured using the latest technology to reduce warping or twisting - this is referred to in the trade as ‘engineered construction’. This means we use finger jointed or laminated hardwood sections in the core and then they are over veneered. This method has proven to be stronger and less likely to cause movement of the timber than using solid sections.

No two trees produce identical grains or colour of wood, and this adds to the beauty of a natural product. We therefore cannot guarantee that all door and frame components will look exactly the same in grain and colour.

Veneers are natural products and prone to deterioration if not adequately protected with superior quality finish. If water penetrates the finish this may cause cracks to appear or splits. In heavy moisture areas or during heavy rain periods, this may cause oak to become darker in colour or have black marks.

Unfortunately, we cannot change the properties or performance of the timber components which are natural products. We cannot therefore accept claims for any variation in the components, or cracks or splits that may appear due to moisture going into the timber. What is more, warping of wood is not a defect if it is not more than ¼ inch (6mm) when it is in its installed position.

Protective finish and maintenance

Aluminium Powder coating

All our composite Ultra external Bifold sets are supplied externally powder coated in a satin finish providing a high quality and durable finish. 
 
Our standard range of external powder coated colours are Anthracite grey – RAL 7016 and Traffic white – RAL 9016. 
 
To maintain the external aluminium powder-coated finish, wash regularly with soapy water and then dry off with a soft lint-free cloth. As a minimum, the external surfaces must be washed at least every three months, and monthly if within five miles of the sea or in an industrial area.  
 
Our general recommendation would be to wash the external aluminium every time you clean your windows, which should normally be more regularly than the minimum requirement.  
 
The powder coating is not guaranteed unless the doors are installed at least 800 metres away from the sea.   
 
We cannot accept any claims for damages, including scratches to the powder coating and aluminium reported 72 hours following delivery, and / or after installation has commenced.   

Oak Polyurethane (PU) finish 

The Oak has been pre-finished with a tinted polyurethane satin finish, providing a resilient natural look and is ready for installation.   
 
All pre-finished Vufold door sets must be well maintained and re-coated as and when necessary, before the coating breaks down. Moisture must not be allowed to penetrate the timber. The length of time between re-coating depends greatly on exposure to weather and the direction the bi-fold doors face. The coating will last longer in a sheltered or north facing site. However, if the site is south facing, or in a heavy weather exposure area, the finish will need maintaining more frequently.  

We recommend all oak faces and edges of the doors and frames are recoated using a polyurethane finish, ideally with UV and weather protection, from a proprietary brand.  

We do not recommend re-finishing with oil, wax, quick drying products such as Ronseal or any finish other than a medium to high microporous wood finishing system.  

IMPORTANT: The PU finish on your Vufold door set must checked every six months for deterioration and re-coated if necessary. This will maintain the decorative finish and ensure that no moisture enters the timber of the doors and frames during the life of the product. Areas exposed to UV rays and high traffic areas such as the bottom cill may require more regular maintenance depending on how often you use the doors and their environment. 
 
Unfortunately, we cannot change the properties or performance of the timber components which are natural products. We therefore cannot accept claims for any variation in the components, cracks or splits that may appear due to moisture entering the timber.  

Installation

Our ready-to-assemble composite doors are supplied with all the essential items and virtually everything pre-machined. This design allows for simple on-site assembly by a component DIY’er or experienced trades person(s).

Important: The outer frame head of our external bi-fold door sets needs to be securely fixed to the building lintel as the sets are top hung. The frame needs to be installed perfectly square and level on all planes into the opening.

Please ensure you have read the installation instructions supplied with your door set.

Following completion of installation, all protective film and tape is to be removed immediately from the doors, frames and glass. We cannot accept any claims relating to adhesive marks left from the protective film following installation.   

Triple glazed sealed units

All glass is supplied to The GGF (glass and glazing federation) standards. 

To reduce carbon emissions from the home and to keep heating and cooling bills down, the government has recommended that all manufacturers use special Low E thermal glass within the sealed unit to comply with Building Regulations Part L.   

This glass is coated with a special substance to comply with the above and occasionally, and in certain light conditions may produce transient visual effects, this can sometimes look like a transparent film or haze, and make the glass appear cloudy. This is very infrequent and only affects a minority of door sets. But as a company, we do have to comply with the new regulations which are for the benefit of all, and this is not a defect.  

Due to demands for better thermal efficiency, it is normal for condensation to form on the outside of the glazing units, to the exterior side of the property. This demonstrates that the glass is performing as it should by reducing the transfer of heat from the internal side of the property to the external side of the property, this is not a defect. For any condensation forming to the inside of the property, this is normally due to high levels of moisture in the air and / or insufficient ventilation in the room, the moisture is then forming on the cold surface. If condensation is forming inside the glazing unit (between the panes of glass) it is likely that the glazing seal has been compromised.

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments.   

Glass must be regularly maintained and cleaned to stop break down of the glass or seals. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.   

Visual distortions caused by reflections in toughened glazing units are a natural phenomenon and not a fault.   

Toughened, or coated glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched. The glass used in sealed units is a processed glass therefore certain blemishes are unavoidable.  

Hardware components   

The exterior hardware in your Vufold bi-fold door set can deteriorate from everyday use, and also because of the weather and the local environment. That’s why regular maintenance of your door hardware is even more important if you live in severe environments like coastal marine areas and some industrial locations. Even stainless-steel products require maintenance to prevent deterioration in these environments.

We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every three months if you live in a marine environment, or every six months if you live in a more general location otherwise your guarantee will not be valid.

Tracks and bearings  

Once your installation has been completed, and before fully operating your door set, please carefully remove any debris / swarf from the top and bottom tracks to ensure nothing comes into contact with any moving components.

After cleaning the tracks, using a microfibre cloth, apply a small amount of lubricant such as silicone spray to the inner lip of each side of the track. Make sure that the wheels pass through the lubricant and that it spreads evenly along the track.

Extra lubricant can be added around the bearings. Adding lubricant in this way reduces wear, improves smoothness, and gives additional protection against corrosion of track and bearings. In addition, remove all surface contamination by wiping all visible track surfaces with a soft, damp cloth and mild detergent, then wipe with a clean cloth. In severe environments, apply a thin film of corrosive preventative such as silicone spray, and wipe with a clean microfibre cloth. 

Stainless steel bearings are made from hardening grade stainless steel, and although this material performs much better than plated steel, it can corrode unless it is maintained as shown above.

Hinges, pivots and drop (slide) bolts  

Using a microfibre cloth, wipe down the visible surfaces with warm soapy water and then rinse off by wiping with a clean, damp cloth. Applying a thin film of light machine oil or silicone spray, wiping with a dry cloth to remove any excess, will help to maintain the original lustre of the metal finish. Be careful not to get these liquids on the timber as this can cause staining.  

The sliding pin and lock cylinder on the drop bolts should be maintained using silicone spray by directing the nozzle into the applicable areas. Always hold a cloth directly under the nozzle to prevent any over spray or liquid running onto the timber.  

Multi-point door locks and handles  

The multi-point door lock is operated by lifting the handle and turning the key. The lock is secured by top and bottom hook bolts and a central deadbolt engaging with the lock keeps. The lock should operate just as smooth with the access door in the open position as what it does when it is fully closed.

It is important that if you feel any resistance when lifting the handle, you do not continue to operate the doors as this may eventually cause the lock to fail and will invalidate your guarantee.   

All moving parts should be lubricated using a silicone spray.   

The handles should be regularly cleaned with a soft damp microfibre cloth to remove any dust or grime taking care not to scratch the surface. 

If you experience problems with locking or unlocking the doors, first eliminate actual lock problems by opening the access door and pulling the handle upwards and then turning the key. If this can be done, the lock is operating normally, and the problem is likely to be due to incorrect door alignment / adjustment.   

Door operational adjustments

When your doors are first installed, they may require some fine tuning to achieve a smooth operation. All our composite external door sets are supplied with easy to adjust hinges. From time to time, due to changes in the seasons or because of wear and tear in use, or if the lock is difficult to operate, it may also be necessary to carry out some hinge adjustments.  

If you experience any difficulty operating your doors, including, opening, closing, sliding and locking of your doors, do not continue to use your doors as this may cause further issues and damages.

All Vufold external aluminium sliding doors and frames, powder coating finish, double glazed sealed units, and hardware components are guaranteed for a full 15 years against the occurrence of manufacturing faults, all subject to correct installation, regular maintenance, and care in use as detailed below.    

Powder coating finish and maintenance  

All our Aluminium sliding door sets are supplied fully powder coated in a satin finish providing a high quality and durable finish, unless otherwise specified. 
Our standard range of colours are Anthracite grey – RAL 7016, Hipca white – RAL 9910 (Status only), and Jet black – RAL 9005. If you have selected an alternative custom colour option and require the colour and RAL code, please contact a Vufold team member and they will provide this for you.  

To maintain the external aluminium powder-coated finish, wash regularly with soapy water and then dry off with a soft lint-free cloth. As a minimum, the external surfaces must be washed at least every three months, and monthly if within five miles of the sea or in an industrial area. Our general recommendation would be to wash the external aluminium every time you clean your windows, which should normally be more regularly than the minimum requirement.  

The powder coating is not guaranteed unless the doors are installed at least 800 metres away from the sea.

We cannot accept any claims for damages, including scratches to the powder coating and aluminium reported 72 hours following delivery, and / or after installation has commenced.   

Installation

This door set is designed to be installed by a competent trades person(s) with good knowledge and previous experience of installing sliding doors. 

Our aluminium doors are supplied with all the essential items, most hardware factory fitted and everything pre-machined. This design allows for simple on-site assembly by an experienced trades person(s).    

The outer frame needs to be securely fixed into the opening perfectly square and level on all planes. The aluminium sliding doors are bottom hung, the weight of the doors is supported via the sliding hardware and threshold.

IMPORTANT: The threshold must be sufficiently packed to ensure there are no dips or rises along the full length of the bottom tracks. When fixing the frame head ensure there is no bowing.   

Please ensure you have read the installation instructions supplied with your door set before commencing installation. 

Double glazed sealed units     

All glass is supplied to The GGF (Glass and Glazing Federation) standards. 

To reduce carbon emissions from the home and to keep heating and cooling bills down, the government has recommended that all manufacturers use special Low E thermal glass within the sealed unit to comply with Building Regulations Part L.   

This glass is coated with a special substance to comply with the above and occasionally, and in certain light conditions may produce transient visual effects, this can sometimes look like a transparent film or haze, and make the glass appear cloudy. This is very infrequent and only affects a minority of door sets. But as a company, we do have to comply with the new regulations which are for the benefit of all, and this is not a defect. 

Due to demands for better thermal efficiency, it is normal for condensation to form on the outside of the glazing units, to the exterior side of the property. This demonstrates that the glass is performing as it should by reducing the transfer of heat from the internal side of the property to the external side of the property, this is not a defect. For any condensation forming to the inside of the property, this is normally due to high levels of moisture in the air and / or insufficient ventilation in the room, the moisture is then forming on the cold surface. If condensation is forming inside the glazing unit (between the panes of glass) it is likely that the glazing seal has been compromised. 

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments.   

Laminated glass is also classed as safety glass and compromises of multiple layers of glass sandwiched together. Due to its high strength, this prevents the glass from breaking into large pieces. If the glass breaks, it will produce a ‘spider web’ effect similar to what is commonly seen in shattered car windscreens. Laminated glass will also increase the sound rating insulation.   

Glass must be regularly maintained and cleaned to stop break down of the glass or seals. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.   

Visual distortions caused by reflections in toughened glazing units are a natural phenomenon and not a fault.   

Laminated, toughened, or coated glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched.  The glass used in sealed units is a processed glass therefore certain blemishes are unavoidable. More blemishes may be visible in laminated glass due to the layered construction.   

Hardware components

The exterior hardware in your sliding door set can deteriorate from everyday use, and also because of the weather and the local environment. That’s why regular maintenance of your door hardware is even more important if you live in severe environments like coastal / marine areas and some industrial locations.   
We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every three months if you live in a marine environment, or every six months if you live in a more general location otherwise your guarantee will not be valid.   

Tracks and bearings  

Once your installation has been completed, and before fully operating your door set, please carefully remove any debris / swarf from the top and bottom tracks to ensure nothing comes into contact with any moving components.   

After cleaning the tracks, using a microfibre cloth, apply a small amount of lubricant such as silicone spray to the inner lip of each side of the track. Extra lubricant can be added around the bearings. Adding lubricant in this way reduces wear, improves smoothness, and gives additional protection against corrosion of track and bearings. In addition, remove all surface contamination by wiping all visible track surfaces with a soft, damp cloth and mild detergent, then wipe with a clean cloth. In severe environments, apply a thin film of corrosive preventative such as silicone spray, and wipe with a clean microfibre cloth.

Multi-point door locks and handles  

The multi-point door lock is operated by raising and lowering the handle and turning the key. The lock is secured by engaging the bolts with the lock keeps. 

All moving parts should be lubricated using a silicone spray.   

The handles should be regularly cleaned with a soft damp microfibre cloth to remove any dust or grime taking care not to scratch the surface.   

If you experience problems with locking or unlocking the doors, first eliminate actual lock problems by opening the access door and push the handle into the locked position and turn the key. If this can be done, the lock is operating normally, and the problem is likely to be due to incorrect door alignment. 

Door operation  

Sliding door sets have become more popular due to customers wanting to maximise the size of each glazed panel, giving more light and fewer interrupted views. The bigger the glass area the heavier the individual panels will be, which in turn will cause extra resistance when operating the heavier doors.  

All our aluminium sliding door sets have been pre-assembled in our factory. They are installed into a steel framed testing rig where they are then fully operated, including checking the doors lock and unlock smoothly. The door sets are then part dismantled, packaged up ready for dispatch and onsite assembly.

If you experience any difficulty operating your doors, including; opening, closing, sliding, and locking of your doors, do not continue to use your doors as this may cause further issues and damages and will invalidate this guarantee. Please contact a member of the customer service team so we can assist you further.   

All Vufold external wooden front doors, frames and sidelights, double glazed sealed units, and hardware components are guaranteed for a full 10 years against the occurrence of manufacturing faults, all subject to correct installation and regular maintenance and care in use as detailed below. 

Door, frame, and sidelight components   

All our timber components are manufactured using the latest technology to reduce warping or twisting - this is referred to in the trade as ‘engineered construction’. This means we use finger jointed or laminated hardwood sections in the core and then they are over veneered. This method has proven to be stronger and less likely to cause movement of the timber than using solid sections. 

No two trees produce identical grains or colour of wood, and this adds to the beauty of a natural product. We therefore cannot guarantee that all door and frame components will look exactly the same in grain and colour. 

Veneers are natural products and prone to deterioration if not adequately protected with superior quality finish. If water penetrates the finish this may cause cracks to appear or splits. In heavy moisture areas or during heavy rain periods, this may cause oak to become darker in colour or have black marks.  

Unfortunately, we cannot change the properties or performance of the timber components which are natural products. We cannot therefore accept claims for any variation in the components, or cracks or splits that may appear due to moisture going into the timber. What is more, warping of wood is not a defect if it is not more than ¼ inch (6mm) when it is in its installed position. 

Protective finish and maintenance 

Important: You would normally be expected to maintain the protective finish between 2 – 5 years depending on the weather and location. Therefore, the finish on your Vufold door set must be checked every six months for deterioration, and re-coated if necessary. The finish must be regularly maintained, to ensure moisture does not enter the timber during the life of the product. 

Following installation; we recommend the door and frame components are fully inspected for any surface area damages that may have compromised the protective coating, and then re-seal where necessary. 

Pre-Finished Oak

All Pre-finished oak doors, frames and sidelights have been factory finished using a high build microporous wood coating system and are ready for installation. This finish offers good UV protection.  

The oak components must be well maintained and re-coated as and when necessary, before the coating breaks down. Moisture must not be allowed to penetrate the timber. The length of time between re-coating depends greatly on exposure to weather and the direction the bi-fold doors face. The coating will last longer in a sheltered or north facing site. However, if the site is south facing, or in a heavy weather exposure area, the finish will need maintaining more frequently. 

Vufold now offer maintenance kits, under the Vufold sigma brand, which contains everything you need to maintain the finish. The regular use of Vufold-sigma Wood care milk 3 to 4 times a year will prolong the period before re-coating is necessary.  

We do not recommend re-finishing with oil, wax, quick drying products such as Ronseal or any finish other than a medium to high build microporous wood finishing system.  

Pre-Finished Grey  

The grey doors, frames and sidelights have been pre-finished with a high build microporous opaque Satin wood finish. This finish offers good UV protection. 

All pre-finished grey components must be well maintained and re-coated as and when necessary before the coating breaks down. Moisture must not be allowed to penetrate the timber. The length of time between re-coating depends greatly on exposure to weather and the direction the bi-fold doors face. The coating will last longer in a sheltered or north facing site. However, if the site is south facing, or in a heavy weather exposure area, the finish will need maintaining more frequently.  

Vufold now offer maintenance kits, under the Vufold sigma brand, which contains everything you need to maintain the finish. The regular use of Vufold-sigma Wood care milk 3 to 4 times a year will prolong the period before re-coating is necessary.  

We do not recommend re-finishing with any finish other than a medium to high build microporous opaque wood finish finishing system. The RAL (colour match) paint code for the grey finish is RAL 7016 Anthracite grey.

Double glazed sealed units

All glass is supplied to The GGF (Glass and Glazing Federation) standards. 

To reduce carbon emissions from the home and to keep heating and cooling bills down, the government has recommended that all manufacturers use special Low E thermal glass within the sealed unit to comply with Building Regulations Part L.   

This glass is coated with a special substance to comply with the above and occasionally, and in certain light conditions may produce transient visual effects, this can sometimes look like a transparent film or haze, and make the glass appear cloudy. This is very infrequent and only affects a minority of door sets. But as a company, we do have to comply with the new regulations which are for the benefit of all, and this is not a defect.    

Due to demands for better thermal efficiency, it is normal for condensation to form on the outside of the glazing units, to the exterior side of the property. This demonstrates that the glass is performing as it should by reducing the transfer of heat from the internal side of the property to the external side of the property, this is not a defect. For any condensation forming to the inside of the property, this is normally due to high levels of moisture in the air and / or insufficient ventilation in the room, the moisture is then forming on the cold surface. If condensation is forming inside the glazing unit (between the panes of glass) it is likely that the glazing seal has been compromised. 

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments.   

Laminated glass is also classed as safety glass and compromises of multiple layers of glass sandwiched together. Due to its high strength, this prevents the glass from breaking into large pieces. If the glass breaks, it will produce a ‘spider web’ effect similar to what is commonly seen in shattered car windscreens. Laminated glass will also increase the sound rating insulation.   

Glass must be regularly maintained and cleaned to stop break down of the glass or seals. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.   

Visual distortions caused by reflections in toughened glazing units are a natural phenomenon and not a fault.   

Laminated, toughened, or coated glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched.  The glass used in sealed units is a processed glass therefore certain blemishes are unavoidable. More blemishes may be visible in laminated glass due to the layered construction. 

Hardware components  

The exterior hardware for your Vufold wooden front door can deteriorate from everyday use, and also because of the weather and the local environment. That’s why regular maintenance of your door hardware is even more important if you live in severe environments like coastal marine areas and some industrial locations. Even stainless-steel products require maintenance to prevent deterioration in these environments.  

We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every three months if you live in a marine environment, or every three to six months if you live in a more general location otherwise your guarantee will not be valid.  

Hinges 

Using a microfibre cloth, wipe down the visible surfaces with warm soapy water and then rinse off by wiping with a clean, damp cloth. Applying a thin film of light machine oil or silicone spray, wiping with a dry cloth to remove any excess, will help to maintain the original lustre of the metal finish. Be careful not to get these liquids on the timber as this can cause staining. 

Locks 

All moving parts should be lubricated using a silicone spray and the surface cleaned with a soft damp cloth to ensure there is not a build-up of dust or debris that can damage the surface areas.  

It is important that if you feel any resistance during operation, you do not continue to operate the doors as this may eventually cause the lock to fail and will invalidate your guarantee.  

If you experience problems with locking or unlocking the doors, first eliminate actual lock problems by opening the access door and checking if the locks work in the open position. If the lock operates as it should then this would indicate an alignment issue. 

Handles, letterplates and letterboxes 

The surface should be cleaned with a soft damp cloth to remove any dust or grime, taking care not to scratch the surface. 
For stainless steel furniture we recommend that all exposed stainless steel surfaces should be wiped over with a clean cloth and warm water with a mild detergent on a frequent and routine basis. 

For more stubborn dirt or stains use mild, non-scratching abrasive powders such as typical household cleaners. These can be used with warm water, bristle brushes, sponges or clean cloths. For more aggressive cleaning a small amount of vinegar can be added to the powder. 

Carbon steel brushes and steel wool should be avoided as they may leave particles embedded in the surface, which can lead to rusting. Cleaning should always be immediately followed by rinsing in clean hot water and the surface then wiped completely with a dry towel. 

To maintain any stainless steel product in the best condition, we recommend routine cleaning once a month and more often in areas subject to heavy soiling or frequent use. 

Door operational adjustments

When your door is first installed, and proving it has been fitted perfectly, square, plum and level on all plains, it should not require any adjustment.

From time to time, due to changes in the seasons or because of wear and tear in use, the locks can become more difficult to operate. 

If you experience any difficulty operating your doors, including, opening, closing, and locking of your doors, do not continue to use your doors as this may cause further issues and damages, and will invalidate your guarantee. Please contact a member of the aftercare team for further assistance. 

All Vufold external composite Front doors, uPVC frames, sidelights, double glazed sealed units, and hardware components are guaranteed for a full 10 years against the occurrence of manufacturing faults, all subject to correct installation and regular maintenance and care in use as detailed below.    

Door, frame and sidelight components 

The doors are manufactured using the latest technology, constructed using a PU foam core, encased with an LVL subframe and reinforced GRP skins, reducing heat loss and providing strength and rigidity.   

The outer frames are constructed from, uPVC, providing strength and low maintenance. 

Protective finish and maintenance

The composite doors are fully factory finished and ready for installation. The door leaf should be cleaned using warm soapy water and wiped dry with a microfibre cloth, or non-aggressive composite door wipes.

Do not use solvents or abrasives as they can damage the surface area of the skin.

The uPVC frames should be cleaned on a regular basis using warm soapy water. Any stains that are hard to remove can be cleaned using a specialist uPVC cleaner, in-line with the manufacturer’s guidelines.  

As a minimum, all external door and frame surfaces must be washed at least every three months, and monthly if within five miles of the sea or in an industrial area. 
The paint finish is not guaranteed unless the doors are installed at least 800 metres away from the sea.   
  
We cannot accept any claims for damages, including chips and scratches to the door and / or frame reported 72 hours following delivery, and / or after installation has commenced.    
 
The threshold should be kept clear of debris and regularly cleaned to ensure the drainage channels remain clear, which can be done whilst cleaning the rest of the door set. The threshold should be stepped over when entering and leaving and not used as a step, to avoid damage to the threshold and seals. 

Installation  

Our composite front doors are supplied with all the essential items, most hardware factory fitted and everything pre-machined. This design allows for simple installation by a component DIYer or experienced trades person(s). Loose components include; handles, hinge end caps and covers, and drip cill end caps.

These products are heavy so a single person must never carry out the installation alone. 

The outer frame needs to be securely fixed into the opening perfectly square and level on all planes. 

Double glazed sealed units

All glass is supplied to The GGF (Glass and Glazing Federation) standards.

To reduce carbon emissions from the home and to keep heating and cooling bills down, the government has recommended that all manufacturers use special Low E thermal glass within the sealed unit to comply with Building Regulations Part L. 

This glass is coated with a special substance to comply with the above and occasionally, and in certain light conditions may produce transient visual effects, this can sometimes look like a transparent film or haze, and make the glass appear cloudy. This is very infrequent and only affects a minority of door sets. But as a company, we do have to comply with the new regulations which are for the benefit of all, and this is not a defect.    

Due to demands for better thermal efficiency, it is normal for condensation to form on the outside of the glazing units, to the exterior side of the property. This demonstrates that the glass is performing as it should by reducing the transfer of heat from the internal side of the property to the external side of the property, this is not a defect. For any condensation forming to the inside of the property, this is normally due to high levels of moisture in the air and / or insufficient ventilation in the room, the moisture is then forming on the cold surface. If condensation is forming inside the glazing unit (between the panes of glass) it is likely that the glazing seal has been compromised. 

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments.  

Laminated glass is also classed as safety glass and compromises of multiple layers of glass sandwiched together. Due to its high strength, this prevents the glass from breaking into large pieces. If the glass breaks, it will produce a ‘spider web’ effect similar to what is commonly seen in shattered car windscreens. Laminated glass will also increase the sound rating insulation.

Glass must be regularly maintained and cleaned to stop break down of the glass or seals. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.

Visual distortions caused by reflections in toughened glazing units are a natural phenomenon and not a fault.   

Laminated, toughened, or coated glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched.  The glass used in sealed units is a processed glass therefore certain blemishes are unavoidable. More blemishes may be visible in laminated glass due to the layered construction.   

Hardware components

The exterior hardware for your Vufold composite front door can deteriorate from everyday use, and also because of the weather and the local environment. That’s why regular maintenance of your door hardware is even more important if you live in severe environments like coastal marine areas and some industrial locations. Even stainless-steel products require maintenance to prevent deterioration in these environments.  
We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every three months if you live in a marine environment, or every three to six months if you live in a more general location otherwise your guarantee will not be valid. 

Hinges

Using a microfibre cloth, wipe down the visible surfaces with warm soapy water and then rinse off by wiping with a clean, damp cloth. Applying a thin film of light machine oil or silicone spray, wiping with a dry cloth to remove any excess, will help to maintain the original lustre of the metal finish. Be careful not to get these liquids on the timber as this can cause staining.

Locks

All moving parts should be lubricated using a silicone spray and the surface cleaned with a soft damp cloth to ensure there is not a build-up of dust or debris that can damage the surface areas.

If you experience problems with locking or unlocking the doors, first eliminate actual lock problems by opening the access door and checking if the locks work in the open position. If the lock operates as it should then this would indicate an alignment issue. 

Handles, letterplates and letterboxes

The surface should be cleaned with a soft damp cloth to remove any dust or grime, taking care not to scratch the surface. 
For stainless steel furniture we recommend that all exposed stainless steel surfaces should be wiped over with a clean cloth and warm water with a mild detergent on a frequent and routine basis.

For more stubborn dirt or stains use mild, non-scratching abrasive powders such as typical household cleaners. These can be used with warm water, bristle brushes, sponges or clean cloths. For more aggressive cleaning a small amount of vinegar can be added to the powder. 

Carbon steel brushes and steel wool should be avoided as they may leave particles embedded in the surface, which can lead to rusting. Cleaning should always be immediately followed by rinsing in clean hot water and the surface then wiped completely with a dry towel.

To maintain any stainless steel product in the best condition, we recommend routine cleaning once a month and more often in areas subject to heavy soiling or frequent use 

Door operational adjustments

When your door is first installed, it should not require any adjustment. All our composite front doors have been fully assembled at our production facility, and checked for smooth operation, including the locking and unlocking of the door.  

From time to time, due to changes in the seasons or because of wear and tear in use, or if the lock is difficult to operate, it may be necessary to carry out some hinge adjustments. 

If you experience any difficulty operating your doors, including, opening, closing, and locking of your doors, do not continue to use your doors as this may cause further issues and damages, and will invalidate your guarantee.

The Winkhaus auto lock has a 'eye height' key location and an auto latch feature for added security. Please be aware, certain users may find it more difficult to operate a ‘eye level’ auto lock compared to a ‘hip level’ manual lock due to operation via a ‘eye level’ thumb turn cylinder only and lacking a traditional lever handle.

All Vufold external aluminium front doors, frames, sidelights and hardware components are guaranteed for a full 10 years against the occurrence of manufacturing defects, the powder coating is guaranteed for 25 years, and double and triple glazed sealed units are guaranteed for 5 years, all subject to correct installation and regular maintenance and care in use as detailed below. 

Powder coating finish and maintenance 

All our Aluminium front door sets are supplied fully powder coated in a satin finish providing a high quality and durable finish, unless otherwise specified.

To maintain the external aluminium powder-coated finish, wash regularly with soapy water and then dry off with a soft lint-free cloth. As a minimum, the external surfaces must be washed at least every three months, and monthly if within five miles of the sea or in an industrial area. Our general recommendation would be to wash the external aluminium every time you clean your windows, which should normally be more regularly than the minimum requirement. 

The powder coating is not guaranteed unless the doors are installed at least 800 metres away from the sea.  

We cannot accept any claims for damages, including scratches to the powder coating and aluminium reported 72 hours following delivery and / or after installation has commenced.  

Installation 

Our aluminium front doors are supplied with all the essential items, most hardware factory fitted and everything pre-machined. This design allows for simple installation by a component DIYer or experienced trades person(s).

These products are heavy so a single person must never carry out the installation alone. 

The outer frame needs to be securely fixed into the opening perfectly square and level on all planes. 

Double and Triple glazed sealed units

All glass is supplied to the GGF (glass and glazing federation) standards. 

To reduce carbon emissions from the home and to keep heating and cooling bills down, the government has recommended that all manufacturers use special Low E thermal glass within the sealed unit to comply with Building Regulations Part L.  

This glass is coated with a special substance to comply with the above and occasionally, and in certain light conditions may produce transient visual effects, this can sometimes look like a transparent film or haze, and make the glass appear cloudy. This is very infrequent and only affects a minority of door sets. But as a company, we do have to comply with the new regulations which are for the benefit of all, and this is not a defect.  

Due to demands for better thermal efficiency, it is normal for condensation to form on the outside of the glazing units, to the exterior side of the property. This demonstrates that the glass is performing as it should by reducing the transfer of heat from the internal side of the property to the external side of the property, this is not a defect. For any condensation forming to the inside of the property, this is normally due to high levels of moisture in the air and / or insufficient ventilation in the room, the moisture is then forming on the cold surface. If condensation is forming inside the glazing unit (between the panes of glass) it is likely that the glazing seal has been compromised.

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments. 

Laminated glass is also classed as safety glass and compromises of multiple layers of glass sandwiched together. Due to its high strength, this prevents the glass from breaking into large pieces. If the glass breaks, it will produce a ‘spider web’ effect similar to what is commonly seen in shattered car windscreens. Laminated glass will also increase the sound rating insulation.

Glass must be regularly maintained and cleaned to stop break down of the glass or seals. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.

Visual distortions caused by reflections in toughened glazing units are a natural phenomenon and not a fault.

Laminated, toughened, or coated glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched.  The glass used in sealed units is a processed glass therefore certain blemishes are unavoidable. More blemishes may be visible in laminated glass due to the layered construction.

Hardware components

The exterior hardware for your Vufold aluminium front door can deteriorate from everyday use, and also because of the weather and the local environment. That’s why regular maintenance of your door hardware is even more important if you live in severe environments like coastal marine areas and some industrial locations. Even stainless-steel products require maintenance to prevent deterioration in these environments.  

We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every three months if you live in a marine environment, or every three to six months if you live in a more general location otherwise your guarantee will not be valid. 

Hinges

Using a microfibre cloth, wipe down the visible surfaces with warm soapy water and then rinse off by wiping with a clean, damp cloth. Applying a thin film of light machine oil or silicone spray, wiping with a dry cloth to remove any excess, will help to maintain the original lustre of the metal finish. Be careful not to get these liquids on the timber as this can cause staining.

Locks

All moving parts should be lubricated using a silicone spray and the surface cleaned with a soft damp cloth to ensure there is not a build-up of dust or debris that can damage the surface areas.

If you experience problems with locking or unlocking the doors, first eliminate actual lock problems by opening the access door and checking if the locks work in the open position. If the lock operates as it should then this would indicate an alignment issue. 

Handles, letterplates and letterboxes

The surface should be cleaned with a soft damp cloth to remove any dust or grime, taking care not to scratch the surface. 

For stainless steel furniture, we recommend you use only the stainless-steel care kit included with your door. Before you begin, carefully mask the powder coated finish of your door using either masking tape or decorator tape. Use a small amount of the cleaning fluid on a microfibre cloth to clean the hardware, followed by the care oil and buff to a shine.

For more stubborn dirt or stains use mild, non-scratching abrasive powders such as typical household cleaners. These can be used with warm water, sponges or clean cloths. For more aggressive cleaning a small amount of vinegar can be added to the powder. 

Carbon steel brushes and steel wool should be avoided as they may leave particles embedded in the surface, which can lead to rusting. Cleaning should always be immediately followed by rinsing in clean hot water and the surface then wiped completely with a dry towel.

To maintain any stainless steel product in the best condition, we recommend routine cleaning once a month and more often in areas subject to heavy soiling or frequent use.  

Door operation

When your door is first installed, it should not require any adjustment. All our aluminium front doors have been fully assembled at our production facility, and checked for smooth operation, including the locking and unlocking of the door.  

From time to time, due to changes in the seasons or because of wear and tear in use, or if the lock is difficult to operate, it may be necessary to carry out some hinge adjustments. 

If you experience any difficulty operating your doors, including, opening, closing, and locking of your doors, do not continue to use your doors as this may cause further issues and damages, and will invalidate your guarantee.

Auto locks have an auto latch feature for added security. Please be aware, certain users may find it more difficult to operate when compared to a manual lock due to operation via a thumb turn cylinder only and lacking a traditional lever handle.

All Vufold roof glazing frames, powder coating finish and double-glazed sealed units are guaranteed for a full 10 years against the occurrence of manufacturing faults, all subject to correct installation and regular maintenance and care in use as detailed below. 

Powder Coating finish and maintenance

All our Aluminium external roof light and roof lanterns are supplied fully powder coated in a satin finish providing a high quality and durable finish, unless otherwise specified. 

Our standard range of colours are Anthracite grey – RAL 7016, Hipca white – RAL 9910, and Jet black – RAL 9005. If you have selected an alternative custom colour option and require the colour and RAL code, please contact a Vufold team member and they will provide this for you. 

To maintain the external aluminium powder-coated finish, wash regularly with soapy water and then dry off with a soft lint-free cloth. As a minimum, the external surfaces must be washed at least every three months, and monthly if within five miles of the sea or in an industrial area. Our general recommendation would be to wash the external aluminium every time you clean your windows, which should normally be more regularly than the minimum requirement. 

The powder coating is not guaranteed unless the doors are installed at least 800 metres away from the sea.  

We cannot accept any claims for damages, including scratches to the powder coating and aluminium reported 72 hours following delivery, and / or after installation has commenced. 

Installation

All our roof lights and roof lanterns must be professionally installed by an experienced trades person(s) with the necessary skills. 

IMPORTANT: All roof glazing must be installed onto an appropriate kerb and sealed using a suitable weatherproof membrane (not provided). Roof lights must be installed with a minimum of a 5-degree pitch.  

Please ensure you have read the installation instructions supplied with your purchase.  

Double glazed sealed units

All glass is supplied to The GGF (Glass and Glazing Federation) standards. 

To reduce carbon emissions from the home and to keep heating and cooling bills down, the government has recommended that all manufacturers use special Low E thermal glass within the sealed unit to comply with Building Regulations Part L.

This glass is coated with a special substance to comply with the above and occasionally, and in certain light conditions may produce transient visual effects, this can sometimes look like a transparent film or haze, and make the glass appear cloudy. This is very infrequent and only affects a minority of roof glazing products. But as a company, we do have to comply with the new regulations which are for the benefit of all, and this is not a defect.

Due to demands for better thermal efficiency, it is normal for condensation to form on the outside of the glazing units, to the exterior side of the property. This demonstrates that the glass is performing as it should by reducing the transfer of heat from the internal side of the property to the external side of the property, this is not a defect. For any condensation forming to the inside of the property, this is normally due to high levels of moisture in the air and / or insufficient ventilation in the room, the moisture is then forming on the cold surface. If condensation is forming inside the glazing unit (between the panes of glass) it is likely that the glazing seal has been compromised. 

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments.  

Glass must be regularly maintained and cleaned to stop break down of the glass or seals. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.

Visual distortions caused by reflections in toughened glazing units are a natural phenomenon and not a fault.

Toughened, or coated glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched. The glass used in sealed units is a processed glass therefore certain blemishes are unavoidable.  

All Vufold aluminium windows and frames, powder coating finish, double glazed sealed units and hardware components are guaranteed for a full 15 years against the occurrence of manufacturing faults, all subject to correct installation, regular maintenance and care in use as detailed below.   

Powder coating finish and maintenance

All our Aluminium windows are supplied fully powder coated in a satin finish providing a high quality and durable finish, unless otherwise specified. 
Our standard range of colours are Anthracite grey – RAL 7016, Hipca white* – RAL 9910 or Gloss white* (*order specific), and Jet black – RAL 9005. If you have selected an alternative custom colour option and require the colour and RAL code, please contact a Vufold team member and they will provide this for you.

To maintain the external aluminium powder-coated finish, wash regularly with soapy water and then dry off with a soft lint-free cloth. As a minimum, the external surfaces must be washed at least every three months, and monthly if within five miles of the sea or in an industrial area. Our general recommendation would be to wash the external aluminium every time you clean your windows, which should normally be more regularly than the minimum requirement. 

The powder coating is not guaranteed unless the windows are installed at least 800 metres away from the sea.

We cannot accept any claims for damages, including scratches to the powder coating and aluminium reported 72 hours following delivery, and / or after installation has commenced.  

Installation  

All our external aluminium windows are supplied with all the essential items, most hardware factory fitted and everything pre-machined. This design allows for simple on-site assembly by an experienced trades person(s). 

The outer frame needs to be securely fixed into the opening perfectly square and level on all planes.  

Please ensure you have read the installation instructions supplied with your window(s).  

Double glazed sealed units 

All glass is supplied to The GGF (Glass and Glazing Federation) standards. 

To reduce carbon emissions from the home and to keep heating and cooling bills down, the government has recommended that all manufacturers use special Low E thermal glass within the sealed unit to comply with Building Regulations Part L.  
 
This glass is coated with a special substance to comply with the above and occasionally, and in certain light conditions may produce transient visual effects, this can sometimes look like a transparent film or haze, and make the glass appear cloudy. This is very infrequent and only affects a minority of windows. But as a company, we do have to comply with the new regulations which are for the benefit of all, and this is not a defect.   

Due to demands for better thermal efficiency, it is normal for condensation to form on the outside of the glazing units, to the exterior side of the property. This demonstrates that the glass is performing as it should by reducing the transfer of heat from the internal side of the property to the external side of the property, this is not a defect. For any condensation forming to the inside of the property, this is normally due to high levels of moisture in the air and / or insufficient ventilation in the room, the moisture is then forming on the cold surface. If condensation is forming inside the glazing unit (between the panes of glass) it is likely that the glazing seal has been compromised. 

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments.  
 
Laminated glass is also classed as safety glass and compromises of multiple layers of glass sandwiched together. Due to its high strength, this prevents the glass from breaking into large pieces. If the glass breaks, it will produce a ‘spider web’ effect similar to what is commonly seen in shattered car windscreens. Laminated glass will also increase the sound rating insulation.  
 
Glass must be regularly maintained and cleaned to stop break down of the glass or seals. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.  
 
Visual distortions caused by reflections in toughened glazing units are a natural phenomenon and not a fault.  
 
Laminated, toughened, or coated glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched.  The glass used in sealed units is a processed glass therefore certain blemishes are unavoidable. More blemishes may be visible in laminated glass due to the layered construction.

Hardware components

The exterior hardware in your Vufold windows can deteriorate from everyday use, and also because of the weather and the local environment. That’s why regular maintenance of your window hardware is even more important if you live in severe environments like coastal / marine areas and some industrial locations.

We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every three months if you live in a marine environment, or every six months if you live in a more general location otherwise your guarantee will not be valid.  

Hinges & stays 

Using a microfibre cloth, wipe down the visible surfaces with warm soapy water and then rinse off by wiping with a clean, damp cloth. Applying a thin film of light machine oil or silicone spray, wiping with a dry cloth to remove any excess, will help to maintain the original lustre of the metal finish. Be careful not to get these liquids on the aluminium as this may affect the powder coating.  

Locks and handles 

All moving parts should be lubricated using a silicone spray.

The handles should be regularly cleaned with a soft damp microfibre cloth to remove any dust or grime taking care not to scratch the surface. 
It is important that if you feel any resistance operating the lock and handle, you do not continue to operate the window as this may eventually cause the lock to fail and will invalidate your guarantee.

If you experience problems with locking or unlocking the windows, first eliminate actual lock problems by opening the window, turn the handle and then turn the key. If this can be done, the lock is operating normally, and the problem is likely to be due to incorrect alignment. 

Window operation 

All our aluminium windows have been pre-assembled in our factory. They are installed into a steel framed testing rig where they are glazed / toe and healed and then fully operated, including checking the windows lock and unlock smoothly.

If you experience any difficulty operating your windows, including: opening, closing, and locking of your windows, do not continue to use your windows as this may cause further issues and damages, and will invalidate this guarantee. Please contact a member of the customer service team so we can assist you further. 

All Vufold external uPVC windows, double and triple glazed sealed units, and hardware components are guaranteed for a full 10 years against the occurrence of manufacturing faults, all subject to correct installation, regular maintenance, and care in use as detailed below.

White uPVC and foil finishes, care and maintenance

All our uPVC windows are supplied in either a standard white uPVC finish or using foils. 

To maintain the window profiles, wash regularly with soapy water and then dry off with a soft lint-free cloth. As a minimum, the external surfaces must be washed at least every three to six months, and monthly if within five miles of the sea or in an industrial area. Our general recommendation would be to wash the window profiles every time you clean your glass, which should normally be more regularly than the minimum requirement. 

You should avoid using any cleaning agents that are abrasive or contain ammonia. Do not use any type of bleach, solvent or adhesive. 

The uPVC is not guaranteed unless installed at least 800 metres away from the sea.  

We cannot accept any claims for damages, including scratches to the UPVC reported 72 hours following delivery, and / or after installation has commenced.  

Installation  

All our external uPVC windows are supplied with all the essential items, most hardware factory fitted and everything pre-machined. This design allows for simple on-site assembly by an experienced trades person(s).    

The outer frame needs to be securely fixed into the opening perfectly square and level on all planes.  

Please ensure you have read the installation instructions supplied with your window(s).  

Double glazed sealed units 

All glass is supplied to The GGF (Glass and Glazing Federation) standards. 

To reduce carbon emissions from the home and to keep heating and cooling bills down, the government has recommended that all manufacturers use special Low E thermal glass within the sealed unit to comply with Building Regulations Part L.  
 
This glass is coated with a special substance to comply with the above and occasionally, and in certain light conditions may produce transient visual effects, this can sometimes look like a transparent film or haze, and make the glass appear cloudy. This is very infrequent and only affects a minority of windows. But as a company, we do have to comply with the new regulations which are for the benefit of all, and this is not a defect.   

Due to demands for better thermal efficiency, it is normal for condensation to form on the outside of the glazing units, to the exterior side of the property. This demonstrates that the glass is performing as it should by reducing the transfer of heat from the internal side of the property to the external side of the property, this is not a defect. For any condensation forming to the inside of the property, this is normally due to high levels of moisture in the air and / or insufficient ventilation in the room, the moisture is then forming on the cold surface. If condensation is forming inside the glazing unit (between the panes of glass) it is likely that the glazing seal has been compromised. 

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments.  
 
Laminated glass is also classed as safety glass and compromises of multiple layers of glass sandwiched together. Due to its high strength, this prevents the glass from breaking into large pieces. If the glass breaks, it will produce a ‘spider web’ effect similar to what is commonly seen in shattered car windscreens. Laminated glass will also increase the sound rating insulation.  
 
Glass must be regularly maintained and cleaned to stop break down of the glass or seals. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.  
 
Visual distortions caused by reflections in toughened glazing units are a natural phenomenon and not a fault.  
 
Laminated, toughened, or coated glass is acceptable if bubbles or blisters, fine scratched no more than 2.5cm long and / or minute particles or neither obtrusive nor bunched.  The glass used in sealed units is a processed glass therefore certain blemishes are unavoidable. More blemishes may be visible in laminated glass due to the layered construction.

Hardware components

The exterior hardware in your Vufold windows can deteriorate from everyday use, and also because of the weather and the local environment. That’s why regular maintenance of your window hardware is even more important if you live in severe environments like coastal / marine areas and some industrial locations.

We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every three months if you live in a marine environment, or every six months if you live in a more general location otherwise your guarantee will not be valid.  

Hinges & stays 

Keep the friction stay track free from dirt and grime and keep the hinge mechanism clean. Lubricate the metal parts regularly with light oil, concentrating on the pivot points.

Locks and handles 

Apply light oil to all moving parts, once a year. Similarly, a little grease should be applied to the locking slots to facilitate smooth running.

The handles should be regularly cleaned with a soft damp microfibre cloth to remove any dust or grime taking care not to scratch the surface. 
It is important that if you feel any resistance operating the lock and handle, you do not continue to operate the window as this may eventually cause the lock to fail and will invalidate your guarantee.

If you experience problems with locking or unlocking the windows, first eliminate actual lock problems by opening the window, turn the handle and then turn the key. If this can be done, the lock is operating normally, and the problem is likely to be due to incorrect alignment. 

Window operation 

All our uPVC windows have been pre-assembled in our factory. They are tested to ensure they are fully operational, including checking the windows lock and unlock smoothly.   

If you experience any difficulty operating your windows, including: opening, closing, and locking of your windows, do not continue to use your windows as this may cause further issues and damages, and will invalidate this guarantee. Please contact a member of the customer service team so we can assist you further. 

All Vufold internal wooden doors and frames, single glazed sealed units, and hardware components are guaranteed for a full 15 years against the occurrence of manufacturing faults, all subject to correct installation and regular maintenance and care in use as detailed below.   

Door and frame components

All our timber components are manufactured using the latest technology to reduce warping or twisting. They are constructed using an engineered wooden core, solid wood lipping’s and faced using real wooden veneers.

No two trees produce identical grains or colour of wood, and this adds to the beauty of a natural product. We therefore cannot guarantee that all door and frame components will look exactly the same in grain and colour.

Veneers are natural products and prone to deterioration if not fully sealed with superior quality finish. If moisture penetrates the finish this may cause cracks to appear or splits.

Unfortunately, we cannot change the properties or performance of the timber components which are natural products. We cannot therefore accept claims for any variation in the components, or cracks or splits that may appear due to moisture going into the timber.

If all faces and edges, including the tops and bottom edges of the doors, are not fully sealed then this can cause excessive movement in the doors due to temperature changes and natural moisture in the air. What is more, warping of wood is not a defect if it is not more than ¼ inch (6mm) when it is in its installed position.  

Protective finish and maintenance 

Finesse, Urban and Edge Unfinished Oak Door sets

All unfinished oak internal door sets must be fully finished according to our guidelines BEFORE the door set is installed. Failure to do so will invalidate the guarantee.

Please note that the use of steel wool or allowing steel or iron fragments to come into contact with the untreated oak timber or veneers may cause oxidisation resulting in black staining.  

Your internal unfinished oak door set(s) must be finished with an internal polyurethane varnish or paint in your preferred colour and gloss level. This should consist of a minimum of 3 coats to ALL faces and edges of the doors and frame components to ensure the product is fully sealed, including the tops and bottom edges of the doors.

If you are looking for a durable and more natural finish, we recommend using Dulux Trade clear polyurethane varnish in a satin finish. It is important that you have tested and checked that you are happy with your choice of finish before applying to your door set. Please note; even clear finishes will darken the timber from its original appearance.  

IMPORTANT: Do not use any oil, wax, quick drying products such as Ronseal or any finish other than a polyurethane finish as this will invalidate your guarantee.

We recommend the coating is checked every 2 – 5 years and recoated if necessary. The coating may require more regular attention if installed say between a kitchen and living area or separating a lounge and dining area with a log burner, or directly next to a radiator due to regular varying temperature changes and moisture rich environments. 

Finesse Primed Plus White Door sets  

The white internal doors sets have been primed with a polyurethane white satin wood finish. This finish offers good protection against natural moisture in the air and general temperature changes.  

All primed plus white Vufold door sets must be checked every 2 – 5 years for deterioration in the finish and re-coated as and when necessary. Moisture must not be allowed to penetrate the timber. The length of time between re-coating depends greatly on the environment / location the doors are installed in. The coating may require more regular attention if installed say between a kitchen and living area or separating a lounge and dining area with a log burner, or directly next to a radiator due to regular varying temperature changes and moisture rich environments. 

The doors can be installed as supplied, however should you wish to apply a final coat, we recommend using a polyurethane finishing system. The RAL (colour match) paint code for the base coat white finish is 9016 Traffic White.  

We do not recommend re-finishing with any finish other than a polyurethane finishing system.

We cannot accept any claims for blemishes in the paint work as it is supplied as a base coat finish and may require a final topcoat, depending on personal preference. 

Installation

Our ready-to-assemble internal wooden doors are supplied with all the essential items and virtually everything pre-machined. This design allows for simple on-site assembly by a competent DIYer or experienced trades person(s).   

IMPORTANT: The outer frame head of our internal bi-fold door sets needs to be securely fixed to the building lintel as the door sets are top hung. The frame needs to be installed perfectly square and level on all planes into the opening.   

Please ensure you have read the installation instructions supplied with your door set. To make life even easier, we also have a How to Install a Wooden Internal bifold door - Vufold installation video.

Single glazed units  

All glass is supplied to The GGF (Glass and Glazing Federation) standards. 

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments.  

Glass must be regularly maintained and cleaned. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.  

Visual distortions caused by reflections in toughened glass are a natural phenomenon and not a fault.   

Toughened, glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched. The glass used is a processed glass therefore certain blemishes are unavoidable.   

Hardware components  

The hardware in your internal Vufold bi-fold door set can deteriorate from everyday use. That’s why regular maintenance of your door hardware is important. 
We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every six months otherwise your guarantee will not be valid.   

Tracks and bearings  

Once your installation has been completed, and before fully operating your door set, please carefully remove any debris / swarf from the top and bottom tracks to ensure nothing comes into contact with any moving components.  

After cleaning the tracks, using a microfibre cloth, apply a small amount of lubricant such as silicone spray to the inner lip of each side of the track. Make sure that the wheels pass through the lubricant and that it spreads evenly along the track.  

Extra lubricant can be added around the bearings. Adding lubricant in this way reduces wear, improves smoothness, and gives additional protection against corrosion of track and bearings. In addition, remove all surface contamination by wiping all visible track surfaces with a soft, damp cloth and mild detergent, then wipe with a clean cloth. In severe environments, apply a thin film of corrosive preventative such as silicone spray, and wipe with a clean microfibre cloth.  

Stainless steel bearings are made from hardening grade stainless steel, and although this material performs much better than plated steel, it can corrode unless it is maintained as shown above.  

Hinges, pivots and drop (slide) bolts  

Using a microfibre cloth, wipe down the visible surfaces with warm soapy water and then rinse off by wiping with a clean, damp cloth. Applying a thin film of light machine oil or silicone spray, wiping with a dry cloth to remove any excess, will help to maintain the original lustre of the metal finish. Be careful not to get these liquids on the timber as this can cause staining.  

The sliding pin on the drop bolts should be maintained using silicone spray by directing the nozzle into the applicable areas. Always hold a cloth directly under the nozzle to prevent any over spray or liquid running onto the timber.  

Door latch and handles  

The handle and latch should operate just as smooth with the access door in the open position as what it does when it is fully closed.

It is important that if you feel any resistance when operating the handle, you do not continue to operate the doors as this may eventually cause the latch to fail and will invalidate your guarantee.

All moving parts should be lubricated using a silicone spray. 

The handles should be regularly cleaned with a soft damp microfibre cloth to remove any dust or grime taking care not to scratch the surface. 

If you experience problems opening and closing the doors, first eliminate the actual latch by opening the access door and pulling the handle downwards to retract the latch. If this can be done, the latch is operating normally, and the problem is likely to be due to incorrect door alignment / adjustment.   

Door operational adjustments

 When your doors are first installed, they may require some fine-tuning to achieve a smooth operation. All our wooden internal door sets are supplied with easy to adjust hinges. 

From time to time, due to changes in the temperature or because of general wear and tear in use, or if the door is difficult to operate, it may also be necessary to carry out some hinge adjustments.  

If you experience any difficulty operating your doors, including, opening, closing and sliding your doors, do not continue to use your doors as this may cause further issues and damages.   

All Vufold Inspire wooden doors and frames, single glazed sealed units, and hardware components are guaranteed for a full 15 years against the occurrence of manufacturing faults, all subject to correct installation and regular maintenance and care in use as detailed below.    

Door and frame components

All our timber components are manufactured using the latest technology to reduce warping or twisting. They are constructed using an engineered wooden core, solid wood lipping’s and faced using real wooden veneers.  

No two trees produce identical grains or colour of wood, and this adds to the beauty of a natural product. We therefore cannot guarantee that all door and frame components will look exactly the same in grain and colour. 

Veneers are natural products and prone to deterioration if not fully sealed with superior quality finish. If moisture penetrates the finish this may cause cracks to appear or splits.  

Unfortunately, we cannot change the properties or performance of the timber components which are natural products. We cannot therefore accept claims for any variation in the components, or cracks or splits that may appear due to moisture going into the timber.  

If all faces and edges, including the tops and bottom edges of the doors, are not fully sealed then this can cause excessive movement in the doors due to temperature changes and natural moisture in the air. What is more, warping of wood is not a defect if it is not more than ¼ inch (6mm) when it is in its installed position.   

Protective finish and maintenance

Inspire Oak Door sets   

All unfinished oak internal door sets must be full finished according to our guidelines BEFORE the door set is installed. Failure to do so will invalidate the guarantee.   

Please note that the use of steel wool or allowing steel or iron fragments to come into contact with the untreated oak timber or veneers may cause oxidisation resulting in black staining.   

Internal unfinished oak door sets must be finished with an internal polyurethane varnish or paint in your preferred colour and gloss level. This should consist of a minimum of 3 coats to ALL faces and edges of the doors and frame components to ensure the product is fully sealed, including the tops and bottom edges of the doors.

If you are looking for a durable and more natural finish, we recommend using Dulux Trade clear polyurethane varnish in a satin finish. It is important that you have tested and checked that you are happy with your choice of finish before applying to your door set. Please note, even clear finishes will darken the timber from its original appearance.   

IMPORTANT: Do not use any oil, wax, quick drying products such as Ronseal or any finish other than a polyurethane finish as this will invalidate your guarantee.

We recommend the coating on your internal doors is checked every 2 – 5 years and recoated if necessary. The coating may require more regular attention if installed say between a kitchen and living area or separating a lounge and dining area with a log burner, or directly next to a radiator due to regular varying temperature changes and moisture rich environments.

Inspire Primed Plus White Door sets   

The white internal doors sets have been primed with a polyurethane white satin wood finish. This finish offers good protection against natural moisture in the air and general temperature changes.  

All internal primed plus white Vufold door sets must be checked every 2 – 5 years for deterioration in the finish and re-coated as and when necessary. Moisture must not be allowed to penetrate the timber. The length of time between re-coating depends greatly on the environment / location the doors are installed in. The coating may require more regular attention if installed say between a kitchen and living area or separating a lounge and dining area with a log burner, or directly next to a radiator due to regular varying temperature changes and moisture rich environments. 

The doors can be installed as supplied, however should you wish to apply a final coat, we recommend using a polyurethane finishing system. The RAL (colour match) paint code for the base coat white finish is 9016 Traffic White.  

We do not recommend re-finishing with any finish other than a polyurethane finishing system.

We cannot accept any claims for blemishes in the paint work as it is supplied as a base coat finish and may require a final topcoat, depending on personal preference. 

Urban Inspire Primed Plus Door Sets

The black internal Urban fold flat door sets have been primed with a polyurethane matt black wood finish. This finish is classed as a base coat finish, however, it still offers good protection against natural moisture in the air and general temperature changes. 

All internal primed plus black Vufold door sets must be checked every 2 – 5 years for deterioration in the finish and re-coated as and when necessary. Moisture must not be allowed to penetrate the timber. The length of time between re-coating depends greatly on the environment / location the doors are installed in. The coating may require more regular attentional if installed say between a kitchen and living area or separating a lounge and dining area with a log burner, or directly next to a radiator due to regular varying temperature changes and moisture rich environments.  

The doors can be installed as supplied, however should you wish to apply a final coat, we recommend using a polyurethane finishing system. The RAL (colour match) paint code for the base coat black finish is 9011 Graphite Black.  

We cannot accept any claims for blemishes in the paint work as it is supplied as a base coat finish and may require a final topcoat, depending on personal preference.  

Installation 

Our ready-to-assemble internal Inspire wooden doors are supplied with all the essential items and virtually everything pre-machined. This design allows for simple on-site assembly by a competent DIYer or experienced trades person(s). 

IMPORTANT: The bottom pivot blocks and outer frame side jambs need to be installed onto your finished floor level, ensuring the outer frame is installed perfectly square and level on all planes into the opening.  If you are installing the doors before laying the floor, it is vital that you have sufficient spacing underneath the frame jambs, and also pack under the bottom pivot blocks so the bottom of the pivot blocks are sitting flush and level with the bottom of the frame jambs.  

Single glazed units

All glass is supplied to The GGF (Glass and Glazing Federation) standards. 

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments. 

Glass must be regularly maintained and cleaned. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.    

Visual distortions caused by reflections in toughened glass are a natural phenomenon and not a fault.   

Toughened, glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched. The glass used is a processed glass therefore certain blemishes are unavoidable.

Hardware components

The hardware in your internal Vufold Inspire door set can deteriorate from everyday use. That’s why regular maintenance of your door hardware is important.

We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every six months otherwise your guarantee will not be valid.    

Hinges, pivots and drop (slide) bolts

Using a microfibre cloth, wipe down the visible surfaces with warm soapy water and then rinse off by wiping with a clean, damp cloth. Applying a thin film of light machine oil or silicone spray, wiping with a dry cloth to remove any excess, will help to maintain the original lustre of the metal finish. Be careful not to get these liquids on the timber as this can cause staining.  

The sliding pin on the drop bolts should be maintained using silicone spray by directing the nozzle into the applicable areas. Always hold a cloth directly under the nozzle to prevent any over spray or liquid running onto the timber. 

Door latch and handles

The handle and latch should operate just as smooth with the access door in the open position as what it does when it is fully closed.    
It is important that if you feel any resistance when operating the handle, you do not continue to operate the doors as this may eventually cause the latch to fail and will invalidate your guarantee. 

All moving parts should be lubricated using a silicone spray.  

The handles should be regularly cleaned with a soft damp microfibre cloth to remove any dust or grime taking care not to scratch the surface. 

If you experience problems opening and closing the doors, first eliminate the actual latch problems by opening the access door and pulling the handle downwards. If this can be done, the latch is operating normally, and the problem is likely to be due to incorrect door alignment / adjustment.

Door operational adjustments

When your doors are first installed, they may require some fine tuning to achieve a smooth operation. All our wooden internal door sets are supplied with easy to adjust hinges.    

From time to time, due to changes in the temperature or because of general wear and tear in use, or if the door is difficult to operate, it may also be necessary to carry out some hinge adjustments.    

If you experience any difficulty operating your doors, including, opening, closing and sliding your doors, do not continue to use your doors as this may cause further issues and damages. 

All Vufold internal wooden doors and frames, single glazed sealed units, and hardware components are guaranteed for a full 15 years against the occurrence of manufacturing faults, all subject to correct installation and regular maintenance and care in use as detailed below.    

Door and frame components

All our timber components are manufactured using the latest technology to reduce warping or twisting. They are constructed using an engineered wooden core, solid wood lipping’s and faced using real wooden veneers.  
No two trees produce identical grains or colour of wood, and this adds to the beauty of a natural product. We therefore cannot guarantee that all door and frame components will look exactly the same in grain and colour.

Veneers are natural products and prone to deterioration if not fully sealed with superior quality finish. If moisture penetrates the finish this may cause cracks to appear or splits.

Unfortunately, we cannot change the properties or performance of the timber components which are natural products. We cannot therefore accept claims for any variation in the components, or cracks or splits that may appear due to moisture going into the timber.

If all faces and edges, including the tops and bottom edges of the doors, are not fully sealed then this can cause excessive movement in the doors due to temperature changes and natural moisture in the air.  

What is more, warping of wood is not a defect if it is not more than ¼ inch (6mm) when it is in its installed position.   

Protective finish and maintenance

Finesse Oak Pre-finished (CPU) Door sets

The oak internal doors sets have been pre-finished with a clear polyurethane (CPU) finish. This finish offers good protection against natural moisture in the air and general temperature changes.  

All pre-finished Vufold door sets must be checked every 2 – 5 years for deterioration in the finish and re-coated as and when necessary. Moisture must not be allowed to penetrate the timber. The length of time between re-coating depends greatly on the environment / location the doors are installed in. The coating may require more regular attention if installed say between a kitchen and living area or separating a lounge and dining area with a log burner, or directly next to a radiator due to regular varying temperature changes and moisture rich environments.  

We do not recommend re-finishing with any finish other than polyurethane finishing system. If you are looking for a clear durable finish, we recommend using Dulux Trade clear polyurethane varnish in a satin finish. It is important that you have tested and checked that you are happy with your choice of finish before applying to your door set. Please note, even clear finishes will darken the timber from its original appearance.  

Finesse White Primed Plus Door sets 

The white internal door sets have been primmed with a polyurethane satin wood finish. This finish is classed as a base coat finish, however, it still offers good protection against natural moisture in the air and general temperature changes.

All internal Vufold door sets must be checked every 2 – 5 years for deterioration in the finish and re-coated as and when necessary. Moisture must not be allowed to penetrate the timber. The length of time between re-coating depends greatly on the environment / location the doors are installed in. The coating may require more regular attentional if installed say between a kitchen and living area or separating a lounge and dining area with a log burner, or directly next to a radiator due to regular varying temperature changes and moisture rich environments.  

The doors can be installed as supplied, however should you wish to apply a final coat, we recommend using a polyurethane finishing system. The RAL (colour match) paint code for the white finish is 9016 Traffic White.   

We cannot accept any claims for blemishes in the paint work as it is supplied as a base coat finish and may require a final topcoat, depending on personal preference. 

Urban Black Primed Plus Door Sets 

The black internal door sets have been primed with a polyurethane matt black wood finish. This finish is classed as a base coat finish, however, it still offers good protection against natural moisture in the air and general temperature changes. 

All internal primed plus Vufold door sets must be checked every 2 – 5 years for deterioration in the finish and re-coated as and when necessary. Moisture must not be allowed to penetrate the timber. The length of time between re-coating depends greatly on the environment / location the doors are installed in. The coating may require more regular attentional if installed say between a kitchen and living area or separating a lounge and dining area with a log burner, or directly next to a radiator due to regular varying temperature changes and moisture rich environments.  

The doors can be installed as supplied, however should you wish to apply a final coat, we recommend using a polyurethane finishing system. The RAL (colour match) paint code for the base coat black finish is 9011 Graphite Black.  

We cannot accept any claims for blemishes in the paint work as it is supplied as a base coat finish and may require a final topcoat, depending on personal preference. 

Finesse, and Urban Unfinished Door sets 

All unfinished internal door sets must be fully finished according to our guidelines BEFORE the door set is installed. Failure to do so will invalidate the guarantee.    
Please note that the use of steel wool or allowing steel or iron fragments to come into contact with the untreated oak timber or veneers may cause oxidisation resulting in black staining.   

Your internal unfinished door set(s) must be finished with an internal polyurethane varnish or paint in your preferred colour and gloss level. This should consist of a minimum of 3 coats to ALL faces and edges of the doors and frame components to ensure the product is fully sealed, including the tops and bottom edges of the doors.  

If you are looking for a durable and more natural finish, we recommend using Dulux Trade clear polyurethane varnish in a satin finish. It is important that you have tested and checked that you are happy with your choice of finish before applying to your door set. Please note, even clear finishes will darken the timber from its original appearance.  

IMPORTANT: Do not use any oil, wax, quick drying products such as Ronseal or any finish other than a polyurethane finish as this will invalidate your guarantee.    

We recommend the coating is checked every 2 – 5 years and recoated if necessary. The coating may require more regular attention if installed say between a kitchen and living area or separating a lounge and dining area with a log burner, or directly next to a radiator due to regular varying temperature changes and moisture rich environments.  

Installation   

Our ready-to-assemble internal wooden doors are supplied with all the essential items and virtually everything pre-machined. This design allows for simple on-site assembly by a competent DIYer or experienced trades person(s).    

IMPORTANT: The outer frame side jambs need to be installed onto your finished floor level, ensuring the outer frame is installed perfectly square and level on all planes into the opening.  If you are installing the doors before laying the floor, it is vital that you have sufficient spacing underneath the frame jambs for the required flooring. 

Single glazed units   

All glass is supplied to The GGF (Glass and Glazing Federation) standards.   

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments. 

Glass must be regularly maintained and cleaned. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.   

Visual distortions caused by reflections in toughened glass are a natural phenomenon and not a fault.    

Toughened, glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched. The glass used is a processed glass therefore certain blemishes are unavoidable. 

Hardware components

The hardware in your internal Vufold French door set can deteriorate from everyday use. That’s why regular maintenance of your door hardware is important.  

We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every six months otherwise your guarantee will not be valid.     

Hinges, and flush finger bolts

Using a microfibre cloth, wipe down the visible surfaces with warm soapy water and then rinse off by wiping with a clean, damp cloth. Applying a thin film of light machine oil or silicone spray, wiping with a dry cloth to remove any excess, will help to maintain the original lustre of the metal finish. Be careful not to get these liquids on the timber as this can cause staining.    

The bolts should be maintained using silicone spray by directing the nozzle into the applicable areas. Always hold a cloth directly under the nozzle to prevent any over spray or liquid running onto the timber.    

Door latch and handles    

The handle and latch should operate just as smooth with the access door in the open position as what it does when it is fully closed.     
It is important that if you feel any resistance when operating the handle, you do not continue to operate the doors as this may eventually cause the latch to fail and will invalidate your guarantee.     

All moving parts should be lubricated using a silicone spray.     

The handles should be regularly cleaned with a soft damp microfibre cloth to remove any dust or grime taking care not to scratch the surface.     

If you experience problems opening and closing the doors, first eliminate the actual latch problems by opening the access door and pulling the handle downwards. If this can be done, the latch is operating normally, and the problem is likely to be due to incorrect door alignment / adjustment. 

Door operational adjustments    

When your doors are first installed, they may require some fine tuning to achieve a smooth operation. All our wooden internal door sets are supplied with easy to adjust hinges.

From time to time, due to changes in the temperature or because of general wear and tear in use, or if the door is difficult to operate, it may also be necessary to carry out some hinge adjustments.     

If you experience any difficulty operating your doors, do not continue to use your doors as this may cause further issues and damages.  

All Vufold internal aluminium doors, frames, fanlights, sidelights, powder coating finish, single glazed units and hardware components, are guaranteed for a full 10 years against the occurrence of manufacturing faults, all subject to correct installation, regular maintenance, and care in use as detailed below. 

Powder coating finish and maintenance

All our Aluminium internal door sets are supplied fully powder coated providing a high quality and durable finish, unless otherwise specified. 

Our standard colours are black – RAL 9005 and grey - RAL 7016. If you have selected an alternative custom colour option and require the colour and RAL code, please contact a Vufold team member and they will provide this for you.  

To maintain the powder-coated finish, wash regularly with soapy water and then dry off with a soft lint-free cloth.  

We cannot accept any claims for damages, including scratches to the powder coating and aluminium reported 72 hours following delivery and / or after installation has commenced.   

Installation 

Our ready-to-assemble internal aluminium doors are supplied with all the essential items and virtually everything pre-machined. All glass will be supplied loose. This design allows for simple on-site assembly by a competent DIYer or experienced trades person(s). 

IMPORTANT: The outer frame side jambs need to be installed onto your finished floor level, ensuring the outer frame is installed perfectly square and level on all planes into the opening.  If you are installing the doors before laying the floor, it is vital that you have sufficient spacing underneath the frame jambs for the required flooring.      

Single glazed units

Loose glass should never be placed directly onto hard floors such as concrete, but should be placed on cardboard, sheeting or wooden batons, on edge rather than flat.  The glass should be stored on its edge and at a 3 – 6 degree angle. Glass should not be stored horizontally or on top of each other and should not come into contact with anything 
harder than itself.

The glass must be inspected before being fitted to the door(s) and / or sidelight(s). We cannot accept any claims for scratched or damaged glass after 72 hours following delivery, and / or after installation has commenced.

Tempered glass means it has been toughened to be up to five times stronger than normal glass. It is unusual to break such strong glass, but sharp objects hitting the glass at certain points can cause breakage. Tempered glass is also known as safety glass. This means that if it breaks it will shatter into smaller fragments which are less likely to cause injury, unlike non-tempered glass which breaks into large, sharp fragments. 

Glass must be regularly maintained and cleaned. This can be done using a mild solution such as washing-up liquid diluted in water. Do not use abrasive cleaning solutions as this may cause scratching.    

Visual distortions caused by reflections in toughened glass are a natural phenomenon and not a fault.    

Toughened, glass is acceptable if bubbles or blisters, fine scratches no more than 2.5cm long and / or minute particles are neither obtrusive nor bunched. The glass used is a processed glass therefore certain blemishes are unavoidable.     

Hardware components

The hardware in your internal aluminium door set can deteriorate from everyday use. That’s why regular maintenance of your door hardware is important.    

We require that the below minimum maintenance is carried out as often as necessary to prevent deterioration. As a guideline, we recommend that this maintenance is done every six months otherwise your guarantee will not be valid.      

Hinges, and flush finger bolts  

Using a microfibre cloth, wipe down the visible surfaces with warm soapy water and then rinse off by wiping with a clean, damp cloth. Applying a thin film of light machine oil or silicone spray, wiping with a dry cloth to remove any excess, will help to maintain the original lustre of the metal finish. Be careful not to get these liquids on the timber as this can cause staining.  

The bolts should be maintained using silicone spray by directing the nozzle into the applicable areas. Always hold a cloth directly under the nozzle to prevent any over spray or liquid running onto the timber.   

Door latch and handles     

The magnetic latch will remain in the body of the lock until the door is closed and will automatically engage once it is aligned with the receiver plate. Pulling the handle lever down will then retract the magnetic latch.  

All moving parts should be lubricated using a silicone spray.  

The handles should be regularly cleaned with a soft damp microfibre cloth to remove any dust or grime taking care not to scratch the surface.   

It is important that if you feel any resistance when operating the handle, you do not continue to operate the doors as this may eventually cause the latch to fail and will invalidate your guarantee.  

All Vufold Micro-pleat blinds are guaranteed for a period of 1 year against the occurrence of manufacturing faults, Vufold Integral Venetian (inside the sealed glazing units) blinds are guaranteed for a period of 5 years; all subject to correct installation and regular maintenance and care in use as detailed below. 

Face Mounted Micro-Pleat Blinds 

Rails and fabrics 

Face mounted pleated blinds are supplied with either a grey, white or brown rail and end caps, and are designed to be fitted to sit within the glazing bead of the individual door itself, but external to the glazing units. The pleated fabric is made from polyester and designed to help reflect solar gain. The fabric is designed to offer shade to the room and additional privacy. Please note, the blinds are not a black out and / or complete privacy blind.   

Installation

We recommend installing the blinds once all building works have been completed to avoid any contamination from general build dust or debris or any wet works.  

There are 2 types of fitting designs depending on your chosen door or window range. ‘Screw fit’ for wooden internal and external ranges and ‘bead fit’ for aluminium ranges. Both designs allow for simple on-site installation by a competent DIY’er or experienced trades person(s). A full fitting kit and installation instructions are provided.  

Before commencing installation, please check you have received the correct type of fitting design, and all components are present and correct. Please ensure you have read the installation instructions supplied with your blinds. 

Screw fit (wooden doors) 

This design requires drilling the wooden glazing bead at the top and bottom corners as per the instructions provided.

The rail is held in place by 2 screws in the upper glazing bead, and the tension cords are fixed in place using plastic grommets that slot into brass bushes in the lower glazing bead. 

Before cutting any of the excess tensioning cords, please ensure you are fully happy with the fit and operation of your blinds.

Bead fit (aluminium doors)

Aluminium bead fit blinds require no drilling. They are supplied with top and bottom corner brackets which slot behind the rubber glazing seals and aluminium side extrusions for extra stability.

The blinds are pre tensioned and the cords fit directly into each of the bottom brackets.  

If the blinds need re-tensioning, please ensure you are operating correctly before trimming the excess cords.  

Maintenance and cleaning

In normal use, our blinds can be cleaned using a soft brush, to remove dust and any insect particles that might have built up.   

You can sponge clean the fabric if there is any fixed dirt or marks. Lightly dampen a sponge with a solution of lukewarm water and a gentle fabric soap and clean the blind fabric. This should be followed by a clean sponge rinse. 

Damp blinds should be dried in the retracted position, to reinstate their pleats. 

Operation

The blinds are hand operated and pulled down / pushed up from the central part of the lower rail of the blind.

Do not operate the blinds by pulling on the tensioning cords. If the cords are pulled from out of the bushes fitted to the bottom glazing bead, re-tie the knot and push it through the bushes, re-inserting the plastic cover gromet.  

Due to the design of blind and glazing bead, spacing needs to be allowed between the fabric and the glazing bead, this is not a design fault, but to allow for smooth operation.  

Integral Blinds 

Slats  

The venetian blinds are made up of metal slats coated in your selected colour.  

Maintenance and cleaning

Blinds located inside the sealed unit do not require any cleaning, however, the glass surface area must be cleaned on a regular basis to allow for smooth easy operation.

Dirty glass can impede the movement on the magnetic controller, causing more force during operation and the potential to scratch the glass.  

Operation and adjustments

Move the external slider up or down to lower or raise the blinds, and to tilt the slats to the desired angle.  

The integral blind raises and lowers using magnets, if the external slider comes free from the glass you will not be able to operate the blind. If it has become disengaged, place the slider on the transparent guide at its lowest point and push the slider towards the top. As the slider moves upwards it will eventually come into contact with the internal magnet.

IMPORTANT: To achieve maximum attraction, you have to move the slider to the very bottom position to fully engage the magnets, at the half engagement point you will hear/feel a click continue to move the slider downwards until you hear/feel a second click.  

If the blind bottom rail becomes out of parallel, raise the blinds to the fully open position and then fully lower them. Repeat if necessary, until the blinds adjust themselves back to level.