What are internal bifold doors?

Internal bifold doors come in two variation. Internal Bifold Door - consist of 2 or up to a maximum of 6 doors depending on the width of your opening. The doors are linked with specialist hardware which allows them to slide and fold together like a concertina, hence they are sometimes called folding doors or concertina doors. Internal Fold Flat Bifold Doors - have between 2 or a maximum of 4 doors depending on the width of your opening. Again these are linked together with specialist hardware but unlike bifold doors that concertina together, Fold flat doors can rotate 180 degrees around against a wall leaving the opening completely free.

Why choose internal bifold doors?

Interior folding doors are a fantastic way to get the most from your home. You can effortlessly switch between open plan and closed plan living, getting the best of both worlds. Make spaces appear larger – Small areas won’t feel as restrictive with an open floor plan layout. Spread natural sunlight – Fewer walls means more light in even the darkest of rooms. Room for entertaining guests – Easier to socialise without splitting into separate rooms. Private spaces – Sometimes you need some time to yourself, walls and doors are great for that. Reduced heating costs – Small spaces are much quicker and easier to heat up. Noise transfer – Closed doors help prevent noise travelling around your home. The resale value of your home can be increased by fitting high quality internal folding sliding doors as buyers can appreciate the extra flexibility and light they offer. More benefits can be found in our advice centre .

Where can they be used?

Bi fold doors can be used in a wide range of areas within the home, the most popular being a room divider is between a living room and a conservatory or a dining room with either a kitchen/living room. They can also be used between living areas and other rooms such as home offices, children’s play rooms, craft rooms, music rooms and even porches.

Whats a ready to assemble door set?

Our internal bifolds are supplied as a complete package. In other words, they come with everything you need pre-machined and ready to assemble – including essential items such as hinges, tracks, hardware, ironmongery, glazing, fixings and seals. That means once your bifold doors are installed, you can be sure of having a fully engineered unit with all aspects of the design and components extensively tested by us for perfect operation. Find out more about our ready-to-assemble door sets .

Why should I choose a ready to assemble door set?

You might find similar looking, cheaper door sets but they don’t include all the items you need – whereas our ready-to-assemble sets offer you many advantages: Comprehensive fitting instructions included. Consistent high quality, so every part fits as it should. If you’re a competent DIYer you may not need a specialist fitter. Quicker installation on-site, reducing time and cost. No specialist equipment needed as everything's fully machined. No need to waste time and money sourcing fixing. No delays and frustration while you source essential components from different suppliers. For true peace of mind you need a Vufold Door Set - every supplied component has been thoroughly tested and approved. That's why we guarantee all our internal bifold sets for 15 years.

Can internal bifold doors be fitted without a track?

Top Hung Internal bifold doors do not need a bottom guide to operate. This allows for seamless flooring between the rooms, further enhancing the feeling it is one large space when the doors are open. You can find out more in our bifold door track guide .

Do internal bifold doors need planning permission?

Most homes in the UK will not need planning permission to install interior bifold doors with the exception of listed buildings which will likely need planning permission, therefore please check.

How to paint and finish internal bifold doors

Locate in a clean and dry room Remove any dust from the surface areas using a micro-fibre or tack cloth Ensure the surface area is smooth and clean Apply a low tack masking tape around the edges of the glass if you have chosen glazed panels Lay the door(s) / frame flat on a raised surface Use a good quality clean brush, evenly apply 1 coat of chosen finish to all faces and edges of the door(s) and frame Allow the finish to fully dry Lightly rub down (denib) between coats Repeat the finishing process until you have applied 3 coats, ensuring the door(s) and frame are fully sealed and well protected Remove the masking tape from around the glass

What type of finish can I use?

Vufolds high quality unfinished internal bi fold doors can easily be painted, stained or varnished (Polyurethane). We do not recommend using a wax or oil as this can cause various issues with the wood and will invalidate your warranty. Once you have decided what type of finish you prefer you then need to consider the durability and sheen level of the finish. The most popular choices are: Gloss (semi/full) - Is a very durable finish, it also reflects the light when dry resulting in a mid to high sheen. Matt - If you're looking for something more natural, these finishes deliver a smooth subtle look and show little to no sheen when dry as they absorb the light. Satin - Has some of the durability of gloss combined with low to mid sheen levels of matt, it's a great all-rounder. Vufold recommends the use of Dulux, Sadolin and Sikkens products for our range of Oak veneer internal bi fold doors.

Natural or synthetic paintbrush?

Using the correct type of paint brush for the product you are using is essential. Synthetic - paint brushes do not absorb much water and have finer tips which help give a smoother finish making them the best option when using water based products. Natural – paint brushes are the superior option when using oil based products, the bristles absorb the product resulting in faster finishing.

How to measure up for internal bi fold doors?

Before ordering an Internal bi fold door, you will need to measure the opening accurately. This can be done by following these four easy steps: Measure the width in the three separate places (top, middle, bottom). Measure the height from the top to bottom at three different points (right, centre, left). Subtract 5 - 10mm from the smallest measurements. Check the aperture is square by measuring the diagonals from corner to corner. *Subtraction 5 - 10mm from the smallest measurements will allow you to ensure the frame can be installed perfectly square and level even if the aperture is slightly out of square.

How to fit an internal bifold door?

The installation of a ready-to-assemble internal bi fold door is a fairly simple process, any knowledgeable DIYer can install their own internal bifolding doors. While each range and size of bi folds has its own set of specific instructions, the basic installation steps are very similar: Frame Assembly The bifold door tracks are pre fitted to the head and sill and fixing holes are piloted in the respective frame parts. Lay out all 4 pieces on the floor or work horses in the correct locations, using the supplied screws (usually 12) assemble the frame into a square - ensure everything lines up nicely before final tightening. Frame Installation into the opening It is vitally important that you install the frame square and level in the opening this will ensure that your doors operate smoothly and correctly. It's worth spending a bit of extra time to ensure they are spot on. Use packers and the supplied drill bits and direct frame fixings to attach the frame into the opening. Ensure you use all the recommended fixing points which can be found in the specific product instructions. Attach the Internal bifold door hardware to the frame and doors Your instruction manual will specify the specific location of the bifold door hardware on the frame and also the doors. The location of these parts will be dependent on the number of doors and also which opening direction you have chosen for the doors Items that will need fitting are: Dropbolts Top and bottom pivots Half offset hinges Intermediate carrier, guide and straight hinge. Seals Tubular mortice latch, striker plate and door handle All hardware installation locations are fully pre machined, they are also pre-drilled or clearly indicated so that installation is easy and straightforward. Install the door into the frame Now that all the hardware is in place the first door can be attached to the frame then subsequent doors added until all the doors are secured in the frame. Again follow your specific product instructions to attach the door in the correct order Final Adjustment Once the doors are in the frame they may need a final adjustment to ensure they are working smoothly as intended. Vufold has designed their doors to ensure any adjustments are as easy as possible. Unlike standard bifold doors, Vufold RTA doors feature easy to adjust internal bi fold door hardware which requires very basic tools. To adjust the doors to the left or right: Ensure the doors fully open Locate the top and bottom pivot hinge adjustment screws (see instructions) Use a screwdriver to adjust until satisfied To adjust the height: Depending on the range you may need to adjust the bottom pivot with a screwdriver and spanner (provided) or the top pivot and intermediate carrier using an allen key (provided). Turn clockwise to raise the door height and anti-clockwise to reduce.

Whats the difference between our internal bi-fold ranges?

Vufold offer two different styles of Internal Bi-fold door. Finesse and Edge These are a standard style internal bi-fold door, you get a single traffic door that can be opened on its own. When you open all the doors they generally all slide and fold to one end with the doors protruding at 90 degrees to the track. Inspire With the Inspire range you still get a traffic door that can be opened independently of the others but when the doors open fully they can be folded back 180 degrees against the wall watch are short video below to see how they work.

What handles are available for Internal Doors?

There generally four types of door handles which suit internal bifolds: Lever handles Flush handles Door Knobs Pull handle Why not read our internal bifold handles guide which makes your selecting decision much easier and gives a helping hand on where to position them.

Why choose timber for internal doors?

Timber is the most common material for internal doors and provides great value, style and quality. uPVC often looks cheap in homes and aluminium is generally best suited for external bifolds. Read our timber vs uPVC vs aluminium comparison for internal doors for more details.

What is the difference between primed plus and unfinished oak?

A primed plus door comes with a 2 step, high build finish. Providing a much better coverage than usual priming processes. The high build layers means some customers may not wish to add any additional layers of finish. Saving time and costs on site. Whereas unfinished doors come without any finish and will require you to finish them yourself, offering great customisation.

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Internal Bi-Fold Doors

UP TO 50% OFF INTERNAL BIFOLDS

Internal Bifold Doors

A popular way to give rooms more natural light, space and flexibility, internal bifold doors can easily change your home from an open plan area ideal for entertaining to a cosy intimate space for a night in front of the television.

They are available in a choice of finishes, door configurations, hardware and glazing options to suit any project.

Finishes - White, Oak and Black
Glazing - Clear Glass and Frosted Glass
Guarantee - 15 Years
Threshold - Tracked and trackless

All Vufold internal bifold doors are supplied as ready-to-assemble sets with every component prepared in our factory, so they’re easier to put together.

Oak Internal bifold doors

UP TO 20% OFF SELECTED SIZES

Rated 4.75/5

Fold Flat Internal Bifold Doors

From

Traffic White 9016

Unfinished Oak

With its unique design and high quality stainless steel hardware, Inspire internal bifold door sets can be folded around against your wall when open, maximising the size of the opening. You can enhance the open plan feel further by fitting without a threshold allowing flooring to run seamlessly through both rooms. It’s easy to see why this is our most popular internal bifold door set.

Shop Our Fold Flat Internal Bifold Doors

Safety Glass

5 Day Delivery

15 Year Guarantee

UP TO 20% OFF SELECTED SIZES

Rated 4.86/5

Slim Internal Bifold Doors

From

Traffic White 9016

Unfinished Oak

Finesse internal folding door sets come with a high quality top hung adjustable roller system for effortless fingertip operation. Our superior engineered doors enable the slimmest sightlines available and are combined with clear toughened safety glass to maximise light transfer between rooms. Finesse Internal folding doors are available in a range of standard sizes (Bespoke sizes available upon request). Selected sizes are available without a bottom track.

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Safety Glass

5 Day Delivery

15 Year Guarantee

50% OFF

Rated 5/5

Frosted Bifold Doors

From

Unfinished Oak

Finesse Frosted oak internal bifold door sets have the same high quality features as our clear sets but use frosted glass instead of clear. This is a great option if you need less distraction or more privacy when the doors are closed, studies or perhaps a home office for example. Finesse frosted Internal folding doors are available in a range of standard sizes (Bespoke sizes available upon request). Selected sizes are available without a bottom track.

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Safety Glass

5 Day Delivery

15 Year Guarantee

20% OFF

Rated 4.96/5

Internal Room Divider Bifold Doors

From

Unfinished Oak

With its contemporary 4 light design and real oak veneer, the Edge room divider door sets will look fantastic in any home. Premium hardware and roller system ensure the doors have the smoothest operation and the unfinished oak veneer can be stained or painted to match any interior decoration. Made to measure sizes can be requested or you can choose from a large range of standard sizes. Selected sizes are available without a bottom track.

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Safety Glass

5 Day Delivery

15 Year Guarantee

Aluminium Internal bifold doors

ID30 Aluminium Bifold Doors

Black

White

ID30 aluminium internal bifold door sets come with a top hung adjustable roller system for effortless fingertip operation and no bottom track allowing flooring to run seamlessly through both rooms. The use of aluminium allows for the slimmest sightlines possible and are combined with clear toughened safety glass to maximise light transfer between rooms. ID30 Internal folding doors are available in a range of standard sizes (Bespoke sizes available upon request).

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Security Glazed

10 Year Guarantee

Black Internal bifold doors

10% OFF

Rated 5/5

Internal Bifold Doors In Black

From

Black

The Urban Inspire room divider door sets are an excellent choice for traditional or modern homes, featuring a contemporary 4 light design and one-of-a-kind stainless steel hardware. The fold flat design, maximises the opening space. No threshold needed for a seamless transition between rooms.

Shop Our Internal Bifold Doors In Black

Safety Glass

5 Day Delivery

15 Year Guarantee

20% OFF

Rated 5/5

Industrial Style Bifold Doors

From

Unfinished Oak

With its 4 light design, the Urban Edge internal bifold door sets look fantastic in any on -trend Industrial style project. Made to measure sizes can be requested, or choose from a large range of standard sizes. Featuring superbly engineered hardware and roller system to ensure the doors have the smoothest operation, and with certain sizes available without a bottom track, what’s not to love?

Shop Our Industrial Style Bifold Doors

Safety Glass

5 Day Delivery

15 Year Guarantee

Internal Bifold Reviews

Internal Bifold FAQ's

Internal bifold doors come in two variation.
1. Internal Bifold Door - consist of 2 or up to a maximum of 6 doors depending on the width of your opening. The doors are linked with specialist hardware which allows them to slide and fold together like a concertina, hence they are sometimes called folding doors or concertina doors.
2. Internal Fold Flat Bifold Doors - have between 2 or a maximum of 4 doors depending on the width of your opening. Again these are linked together with specialist hardware but unlike bifold doors that concertina together, Fold flat doors can rotate 180 degrees around against a wall leaving the opening completely free.
Interior folding doors are a fantastic way to get the most from your home. You can effortlessly switch between open plan and closed plan living, getting the best of both worlds.
- Make spaces appear larger – Small areas won’t feel as restrictive with an open floor plan layout.
- Spread natural sunlight – Fewer walls means more light in even the darkest of rooms.
- Room for entertaining guests – Easier to socialise without splitting into separate rooms.
- Private spaces – Sometimes you need some time to yourself, walls and doors are great for that.
- Reduced heating costs – Small spaces are much quicker and easier to heat up.
- Noise transfer – Closed doors help prevent noise travelling around your home.
The resale value of your home can be increased by fitting high quality internal folding sliding doors as buyers can appreciate the extra flexibility and light they offer. More benefits can be found in our advice centre.
Our internal bifolds are supplied as a complete package. In other words, they come with everything you need pre-machined and ready to assemble – including essential items such as hinges, tracks, hardware, ironmongery, glazing, fixings and seals.

That means once your bifold doors are installed, you can be sure of having a fully engineered unit with all aspects of the design and components extensively tested by us for perfect operation. Find out more about our ready-to-assemble door sets.
You might find similar looking, cheaper door sets but they don’t include all the items you need – whereas our ready-to-assemble sets offer you many advantages:
- Comprehensive fitting instructions included.
- Consistent high quality, so every part fits as it should.
- If you’re a competent DIYer you may not need a specialist fitter.
- Quicker installation on-site, reducing time and cost.
- No specialist equipment needed as everything's fully machined.
- No need to waste time and money sourcing fixing.
- No delays and frustration while you source essential components from different suppliers.
For true peace of mind you need a Vufold Door Set - every supplied component has been thoroughly tested and approved. That's why we guarantee all our internal bifold sets for 15 years.

How much do internal bifold doors cost?

The cost of an internal bifolding door will vary depending on the

Overall Width
Material used in construction
Finish required eg. Fully finished, White Primed, Unfinished
Number of doors

Current 2024 pricing examples are in the below table:

Vufold Range	Finish	Width In Meters	No. Doors	Cost inc VAT
Inspire Oak	Unfinished Oak	2.4m	4	£1,359.00
Inspire White	Basecoat Plus White	2.4m	4	£1,459.00
Heritage Inspire	Basecoat Plus Black	2.4m	4	£1,629.00
Finesse Oak	Unfinished Oak	2.4m	3	£1,209.00
Finesse White	Basecoat Plus White	2.4m	3	£1,319.00

- Locate in a clean and dry room
- Remove any dust from the surface areas using a micro-fibre or tack cloth
- Ensure the surface area is smooth and clean
- Apply a low tack masking tape around the edges of the glass if you have chosen glazed panels
- Lay the door(s) / frame flat on a raised surface
- Use a good quality clean brush, evenly apply 1 coat of chosen finish to all faces and edges of the door(s) and frame
- Allow the finish to fully dry
- Lightly rub down (denib) between coats
- Repeat the finishing process until you have applied 3 coats, ensuring the door(s) and frame are fully sealed and well protected
- Remove the masking tape from around the glass
Vufolds high quality unfinished internal bi fold doors can easily be painted, stained or varnished (Polyurethane).

We do not recommend using a wax or oil as this can cause various issues with the wood and will invalidate your warranty.

Once you have decided what type of finish you prefer you then need to consider the durability and sheen level of the finish.

The most popular choices are:
- Gloss (semi/full) - Is a very durable finish, it also reflects the light when dry resulting in a mid to high sheen.
- Matt - If you're looking for something more natural, these finishes deliver a smooth subtle look and show little to no sheen when dry as they absorb the light.
- Satin - Has some of the durability of gloss combined with low to mid sheen levels of matt, it's a great all-rounder.
Vufold recommends the use of Dulux, Sadolin and Sikkens products for our range of Oak veneer internal bi fold doors.
Before ordering an Internal bi fold door, you will need to measure the opening accurately. This can be done by following these four easy steps:
1. Measure the width in the three separate places (top, middle, bottom).
2. Measure the height from the top to bottom at three different points (right, centre, left).
3. Subtract 5 - 10mm from the smallest measurements.
4. Check the aperture is square by measuring the diagonals from corner to corner.
  *Subtraction 5 - 10mm from the smallest measurements will allow you to ensure the frame can be installed perfectly square and level even if the aperture is slightly out of square.
The installation of a ready-to-assemble internal bi fold door is a fairly simple process, any knowledgeable DIYer can install their own internal bifolding doors.

While each range and size of bi folds has its own set of specific instructions, the basic installation steps are very similar:
1. Frame Assembly
  
  The bifold door tracks are pre fitted to the head and sill and fixing holes are piloted in the respective frame parts. Lay out all 4 pieces on the floor or work horses in the correct locations, using the supplied screws (usually 12) assemble the frame into a square - ensure everything lines up nicely before final tightening.
2. Frame Installation into the opening
  
  It is vitally important that you install the frame square and level in the opening this will ensure that your doors operate smoothly and correctly. It's worth spending a bit of extra time to ensure they are spot on. Use packers and the supplied drill bits and direct frame fixings to attach the frame into the opening. Ensure you use all the recommended fixing points which can be found in the specific product instructions.
3. Attach the Internal bifold door hardware to the frame and doors
  
  Your instruction manual will specify the specific location of the bifold door hardware on the frame and also the doors. The location of these parts will be dependent on the number of doors and also which opening direction you have chosen for the doors
  
  Items that will need fitting are:
  All hardware installation locations are fully pre machined, they are also pre-drilled or clearly indicated so that installation is easy and straightforward.
4. Install the door into the frame
  
  Now that all the hardware is in place the first door can be attached to the frame then subsequent doors added until all the doors are secured in the frame. Again follow your specific product instructions to attach the door in the correct order
5. Final Adjustment
  
  Once the doors are in the frame they may need a final adjustment to ensure they are working smoothly as intended. Vufold has designed their doors to ensure any adjustments are as easy as possible. Unlike standard bifold doors, Vufold RTA doors feature easy to adjust internal bi fold door hardware which requires very basic tools.
  
  To adjust the doors to the left or right:
  1. Ensure the doors fully open
  2. Locate the top and bottom pivot hinge adjustment screws (see instructions)
  3. Use a screwdriver to adjust until satisfied
  To adjust the height:
  1. Depending on the range you may need to adjust the bottom pivot with a screwdriver and spanner (provided) or the top pivot and intermediate carrier using an allen key (provided). Turn clockwise to raise the door height and anti-clockwise to reduce.
Go to our internal door installation advice section for further details.
Vufold offer two different styles of Internal Bi-fold door.

Finesse and Edge - Bifold Door

These are a standard style internal bi-fold door, you get a single traffic door that can be opened on its own. When you open all the doors they generally all slide and fold to one end with the doors protruding at 90 degrees to the track.
Inspire - Foldflat Bifold Door

With the Inspire range you still get a traffic door that can be opened independently of the others but when the doors open fully they can be folded back 180 degrees against the wall watch are short video below to see how they work.
There generally four types of door handles which suit internal bifolds:
- Lever handles
- Flush handles
- Door Knobs
- Pull handle
Why not read our internal bifold handles guide which makes your selecting decision much easier and gives a helping hand on where to position them.
They are generally very low maintenance but the following below steps can keep the door in perfect working order.
1. The finish on the doors should be checked every 2-5 years and recoated if necessary. The coating may require more regualr attention if installed in a moisture rich enviroment (kitchen) or directly next to a heat source (radiator or log burner). The high moisture and/or varying temps can all contribute to the finish breaking down more quickly.
2. Hardware, hinges, handles and tracks - All parts will benefit from a bi-annual wipedown with a damp microfibre cloth just to remove an build-up of surface contamination.
3. A small amount of silicone lubricating spray can be used on hinges, bearings and slidebolts annually - this reduces wear and also improves the smoothness of operation.

Our Internal Bifold Doors have been rated 4.81/5 based on 883 individual customer review(s)

Starting at: £747.00 up to £2,139.00 for 59 products

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Internal Bifold Doors

Oak Internal bifold doors

Aluminium Internal bifold doors

Black Internal bifold doors

Internal Bifold Reviews

Internal Bifold FAQ's

Frame Assembly

Frame Installation into the opening

Attach the Internal bifold door hardware to the frame and doors

Install the door into the frame

Final Adjustment

Finesse and Edge - Bifold Door

Inspire - Foldflat Bifold Door

Contact us for a quotation

Contact us for a quotation

Internal Bifold Doors

Oak Internal bifold doors

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