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Wood bifold doors

Timbers like oak or spruce have a range of positive natural attributes that make them the perfect material for constructing doors. For one, they offer great insulation values and they're highly resistant to force. Wood also 'breathes', which can slightly improve air circulation in a room. And, of course, wooden bifold doors just have that amazing woodgrain look to them. Large external bi-fold doors made of wood also let plenty of natural light into your home, while the folding leaf system allows you to open and close them quickly and effortlessly.

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Our wooden bi-fold doors

Experience an open living space, with our internal or external bi-folding doors made of high-quality timber. Choose the type of timber that's perfect for you. Your options range from hardwoods like oak to softwoods such as spruce.

  • Wood bifold door Classic IV 68
    UW- value
    ≥ 1.00
    The striking profile

    Classic IV 68

    • Offset design
    • 68 mm construction depth
    • Almost complete opening of the folding sashes
    from € 2,367 from € 2,367
    Show profile
  • Wood bifold door Classic IV 78
    UW- value
    ≥ 0.84
    The striking premium profile

    Classic IV 78

    • Offset design
    • 78 mm construction depth
    • Almost complete opening of the folding sashes
    from € 3,032 from € 3,032
    Show profile

Fully customised wooden bifold doors

Bi-folding doors feature multiple sliding leaves, each consisting of a casement and a large glazed panel. This allows them to be extremely wide. Bifold doors made of timber (spruce, oak, etc.) in large sizes can easily cover the entire length of a room. Choosing the right design and colour is just as important as choosing materials with good insulation properties and resistance against force. The RAL colour palette features countless colour finishes to pick from, allowing you to find the perfect fit for the exterior (and interior) design of your home. And since this type of door features so many individual leaves, choosing the right material for the casement can impact thermal efficiency more significantly compared to other door types.

Colour options for wooden bi-fold door sets

Colour options for wooden bi-fold doors

Customise the look of your internal or external bifold door with our range of RAL colours. Do you prefer bright colours or unobtrusive finishes? One way or another, you'll find what you're looking for in our colour range.

Glazing bars for folding door sets

Glazing bars for wooden folding doors

Glazing bars are a perfect fit for internal or external bifold doors made of timber (spruce, oak, etc.) They add a personal touch and make your patio or garden area look that much more tasteful. Choose from three glazing bar variants.

Detail drawings

Detail drawings for wooden bi-fold doors

Our technical drawings and cross-sections show you in detail how your timber bifold door set works, how deep it's installed and where the extras you've chosen are mounted on the door.


U-values for wooden bi-fold doors

U-values are the easiest way to compare insulation efficiency for external doors and windows. The value of a wooden bifold door comes from combining the insulation values of the glazed panel and the frame profile according to their relative surface area.

Features and options

Any exterior door leading to the garden, a balcony, or the patio needs to be resistant to burglary attempts. At windows24.com, you have plenty of options to maximise security depending on where you want to install your bi-fold door. With an oak patio door, you should consider adding laminated safety glass and locking handles. With a French door, you may want to choose structured or ornamental glass to allow your door to act as a privacy screen.

Glazing types for bi-fold doors

Glazing types for bi-fold doors

Find the perfect glazed panel for your new door set to protect your home even more efficiently.

Faltschiebetür Beschlag

Bi-fold door fittings

Choose your internal or external door's fittings based on resistance class. Find all the info you need here.

Folding door handles

Bi-fold door handles

Here you'll be able to determine which handle you'd like on your new hard-wearing oak bifold door.


Handicapped-accessible bi-fold doors

Choose an internal or external bifold door with a threshold that's level with the ground to make your home handicapped accessible.

Buying wooden bi-fold doors

Compared to normal sliding doors, bifold doors really aren't much more difficult to install. That's why experienced DIY enthusiasts can easily avoid hiring a costly professional builder. All you need are the proper tools for the job, a few helping hands and detailed installation instructions. You'll have your new oak bifold patio doors installed within a day's time. Take care to adjust your newly-installed doors, though, as both burglary protection and insulation efficiency rely on properly closing seals and leaves that are flush with the oak frame.



Find useful information on the production, installation and functionality of wooden bifold doors.

Installation instructions

Installation instructions

You'll need these instructions to install, adjust and re-adjust your new oak door.

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Further information

Convenience and security – why install a bi-fold door?

What makes internal or external bi-fold doors so unique is the way they open and close: internal or external bi-fold doors consist of multiple leaves (each consisting of an oak or spruce casement and a glazed panel) which fold together like a concertina. This offers a number of benefits over normal slide doors:

  • They can cover a wider area.
  • You can open the door only partially or completely.
  • Feel safe with increased burglary protection.  

This makes them a safe option for porches, gardens and balconies.

The most convenient thing about external or internal bifold doors is that you can open them either completely – to move large objects through, for example – or you can only open a couple of segments if all you want to do is let in some fresh air.

Folding leaves glide along their guide rails effortlessly, making folding patio doors much easier to operate than you'd think based on their sheer size. And the best thing is that the oak leaves require much less space when they're opened. Where a large tilting door may require lots of space around the leaves to swing open, bifolding door leaves fit neatly together when opened.

Thermal insulation

Bifold doors differ from normal slide door sets in terms of insulation. Since bifold doors consist of multiple individual oak segments with glazed inserts, the frame makes up a larger surface area compared to doors consisting of only one sliding leaf. Since modern clear glass inserts insulate even better than solid wood (spruce, oak, etc.), this means the overall thermal efficiency of bifold doors tends to be slightly minimised compared to other types of sliding exterior or internal doors made from the same material.

So if you'd like to install a bifold door in your home, make sure you maximise its insulation values by choosing top-grade wood (spruce, oak, etc.) or multi-chamber uPVC profiles. You can also improve the thermal efficiency of your oak bifold doors by using three-pane glass panels or insulated spacers. Keep in mind that bifold doors (especially with large sizes) need to be adjusted properly so the seals between the frame and the leaves seal tightly.

Only ever rely on high-quality seals, as no amount of re-adjusting will prevent bad seals from leaking warmth to the outside. At windows24.com, we take special care to only use highly advanced seals to manufacture our bifold doors. We also provide you with clear instructions on how to adjust and re-adjust the leaves without outside help.

Frequently asked questions

Unlike materials such as aluminium, timbers like oak or spruce are a natural resource from sustainable sources – which makes them an even more popular material for windows and bi-fold door sets. They do have their price, though, with the larger doors as well as doors with greater installation depth being more costly than smaller ones. With the windows24.com online configurator, you can customise your new spruce or oak bifold door before manufacture to ensure they fit your wishes precisely – while keeping an eye on the price. Our configurator shows you the final price of your bi-fold door set, with all extras and options already included.

Timber combines good insulation and durability with the amazing look you've come to expect from high-quality hardwood or softwood. That's why wooden windows and external or internal doors are so popular. When customising your new bifold door with windows24.com, you can choose between different hardwoods and softwoods, including spruce, meranti and oak. If you're looking for an even more robust door that's highly resistant to warping, you can also opt for an aluminium composite construction with an internal wooden core and an aluminium shell on the outside.

Depending on the type of timber you've chosen, you can apply a range of colours to the frame and leaf. We use environmentally friendly water-based finishes during manufacture. Choose the RAL colour that fits best with your home and enjoy your fully customised internal or external bifold door.

Yes, you can. Bars are a popular design element that can make any modern window or oak door look timeless. You can choose from Helima bars (internal bars), Vienna bars (sitting on the glazed surface) and glass-partitioning bars. You can even choose how many bars you want and how to space them out.

You can order our oak, spruce or meranti external bifold doors with up to five leaves for particularly wide door sets offering an amazing view of the outside. The next step is to decide on how these leaves should open. You can even decide to have one leaf pivot out like a normal single door and have the other leaves fold together.

Do you still have questions?

Here you will find answers to the most frequently asked questions about bifold doors.

Your question is not answered here? Then simply call us on +49 711 860 601 60. Our experts will be happy to answer your questions.

Or you can directly arrange a telephone appointment. Whether for a new building or a renovation, you will receive individual expert advice from us so that you can configure your desired product exactly according to your ideas.

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