Interior Bi-Fold Doors

Interior bi-folding doors are not just a way to create the illusion of space in small rooms, but also have great potential for flexible open-plan living.

Designed to elicit a feeling of warmth, these doors allow you to benefit from a cosy environment whilst allowing light to flow naturally through your home.

interior bi-folding doors

What Are Bi-Fold Doors?

Interior bi-fold doors (also known as internal folding doors and concertina doors) are made from a series of panels and can fold in or out of a threshold to open up space.

With bi-fold doors that have an odd number of panels a traffic door can be created, so that the user doesn’t need to fold all the panels back when access is required. Bi-fold doors can be fitted to a track on which the panels slide along when being folded back.

Wood effect uPVC Bi-folding door

Bi-fold doors can be fitted as exterior or interior doors to make the most of both indoor and outdoor spaces. You can also get bifold windows with a similar design.

They are usually made with built-in glass panels to allow plenty of light in, which helps to create the illusion of space through greater visibility of more space elsewhere.  

Why Invest in Interior Bi-Folding Doors?

Maximise Space

Interior bi-fold doors are a great way to maximise space in your home, as the concertina design of bi-fold doors means that the panels can be folded up against a wall when no longer needed.

White uPVC Bi-Fold Doors

As well as this, interior bi-fold doors can help create the illusion of space, even in a smaller home. This is because the visibility of other, larger spaces from inside a smaller room, even when the door is closed, allow even the tiniest of rooms to appear spacious.

Room Dividers

Internal bi-fold doors are most commonly used to divide larger rooms because open-plan living areas are not always practical.

Interior bi-fold doors allow you to have the best of both worlds, as you can close the doors to use rooms separately and still maintain a good level of sound-proofing and privacy, whilst also having the ability to open the bi-fold doors for more space when you need it.

uPVC Bi-Fold Doors

An added bonus is that dividing a large room into smaller sections can help create a cosy environment that is easier to keep warm in the winter, but still allows plenty of natural light in.

Having the ability to separate your kitchen from your living area helps you to keep control of cooking smells, and avoid undesirable, stale odours lingering in other parts of the home.

As well as this practical feature, installing internal bi-fold doors in your kitchen and living areas can give your home a wonderful contemporary feel to welcome guests into.


If you’re thinking about installing internal bi-fold doors in your home and privacy is an issue, don’t forget that bi-fold doors can be fitted with frosted glass or integral blinds.

Blinds or curtains are perfect for when you want to maintain the illusion of two separate rooms most of the time, while frosted glass allows you to have a luxurious part-time feature wall, without sacrificing room to room privacy.

bi-fold patio doors

Secret Stores

Give your home the look and feel of a well-organised and tidy space with interior bi-fold doors and create a lasting good impression. Internal bi-fold doors can serve as the door to a small pantry or larder that you don’t want in view all the time. Simply specify your bi-folds with frosted glass.

You may want to consider using interior bi-fold doors to conceal other household necessities, such as a laundry room, with a more aesthetically pleasing interior bi-fold door as well.

Added Value

Installing internal bi-fold doors in your property can increase its market value if you happen to sell it. As bi-fold doors bring more light and allow for more space to be saved, internal bi-fold doors can be a valued selling-point in the property market.


As well as this, the stylish appearance of modern interior bi-fold doors means that potential buyers are likely to remember your property as one with unique character and charm.

A Sense of Style

Interior bi-fold doors come in a variety of colours and styles, which means you’re always able to choose a bi-fold product to suit the style of your home.

What Sizes Do Bi-fold Doors Come In?

Bi-fold doors come in a range of sizes, but their height is usually between 2090mm and 2100mm, in order to fit most standard internal doorways.

However, the width of bi-fold doors entirely depends upon the size of your aperture. The widths of bi-folding doors start with two-panel bi-folds at 1800mm wide, but can go up to 4800mm with up to six panels.

What Are My Options in Terms of Materials?

The type of material you choose for your new internal bi-fold doors should be determined by the purpose the bi-fold door would serve.

Timber is a popular option for living areas, and oak is often a favourite because of its durability and aesthetic appeal.

Interior bi-fold doors can also be glazed with a glass of your choice, with frosted or patterned glass normally being used for privacy reasons or to suit the style of the property’s interior design.

For wardrobe bi-fold doors, glass, timber and even mirrors have been used to create a modern look in many bedrooms.

Fitting Interior Bi-Fold Doors

Consider yourself good with DIY? Watch B&Q’s video on how to fit interior bi-fold doors. Of course, if you are after UPVC or aluminium bi-folding doors, it’s best to go directly to a specialist company.

Interior Bi-Fold Door Prices

Don’t compromise on price! Use our online double glazing prices calculator to find the best quote. Double Glazing on the Web can put you in touch with several companies to so you can make sure you’re paying a fair price.

Frequently Asked Double Glazing Questions

Frequently Asked Double Glazing Questions

Can Double Glazed Doors be Fitted with a Pet Flap?

Depending on the style of door, a pet flap can be fitted as an extra service. The only exception is when glass panels feature on the lower half of the door.

How Much Do Doors Cost?

Your double glazed door cost will depend on specifications such as style, size, locks, glazing and door furniture. Double Glazing on The Web gives you the opportunity to create your very own unique door quote online. Start your free door quote today.

What Does UPVC Stand For?

UPVC is an abbreviation for unplasticised polyvinyl chloride which is used in window frames.

Which Bi-folding Door Configuration is Best?

When choosing the arrangement of your bi-folding doors you need to consider the size and layout of your room. Outfolding bi-fold doors will take up less internal space when completely folded back and a left of right folding will be dependent on space available in your room.

How Long Does It Take To Install Bi-Fold Doors?

If a survey is scheduled within 48hrs then your bi-fold doors can be supplied and installed within just 6 – 8 weeks.

How Secure Are Bi-Folding Doors?

Bi-folding doors are extremely secure and are built with a high security locks as standard. Each of our double glazing installers will offer their own range of locking systems with additional upgrade options for all security conscious homeowners.

Are uPVC Doors Easy To Maintain?

uPVC doors are extremely easy to maintain and will never require re-painting or varnishing. Neither will a uPVC door rot or warp!

What Are Composite Doors Made Of?

Composite doors are made of a combination of high performing materials which is why they are so strong and incredibly long lasting. The composite door is made from: reinforced UPVC, fibreglass skin, high density foam and a water resistant composite materials.

Do Composite Doors Fade?

Composite doors feature a tough and durable skin where colour runs throughout rather than a simple surface coating. This means a composite door is not likely to wear or fade like the majority of painted doors. A composite door is very long lasting which also reduces the amount of maintenance required to keep it looking in top condition.

Do Composite Doors Need Painting?

Composite doors do not require re-painting. These low maintenance doors feature a water resistant GRP, coloured skin which keeps a pristine appearance year after year.

Do Composite Doors Warp?

A composite door will not warp like wood and won't require regular painting.

Can I Get Composite Side Panels?

Composite doors are available with matching composite side panels, your installer will offer you a choice of colours and glazing.

Is Every Composite Door Different?

There are different qualities to every composite door and they will vary between manufacturers depending on materials used. At Double Glazing on The Web we only put you in touch with the highest quality suppliers and installers.

What Do Stable Doors Look Like?

These country style doors offer charming aesthetics and are a stylish alternative to standard back doors, stable doors a great choice for any kind of property. This door is split in two halves which open independently from one another as well as function as a whole. Whether you are after a traditional stable door or more contemporary design with modern glazing, your double glazing installer will be able to offer you a wide range of options for your property.

Are UPVC Stable Doors Made To Measure?

Your UPVC stable door will be made to measure and tailored to your specifications given to your double glazing installer.

How Much Do UPVC French Doors Cost?

UPVC French door prices will depend on your personal requirements and specifications such as size, style and glazing. To get an average French doors cost use our door cost calculator for a free online quote.

Are UPVC Patio Doors Secure?

UPVC patio doors can be fitted with a choice of high security locks to make them extra secure. You can also choose from a range of glazing styles to further enhance the strength of your patio doors.

Do I Need Planning Permission For Patio Doors?

You may require planning permission for double glazed patio doors if you have a listed building or happen to live within a conservation area. Visit the V for more information.

How Do Sliding Patio Doors Work?

UPVC sliding doors operate on a smooth, easy glide system which allows for effortless transition. They are attached to metal or vinyl tracks which are fitted to the top and bottom frames and plastic rollers are added to ease the movement.

How Do Slide and Swing Doors Operate?

A multi-pane door with individual panes slides on a single track with no loss of space. Panes are able to operate individually with no visible hinges or hardware. The slide and swing door can open up spaces between rooms or between home and garden or even conservatory.

Bi Fold Door Prices