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Design Your Bifolding Doors Online

Here at UK Doors Online we manufacture all your aluminium doors to order. Meaning individual doors can be made completely bespoke to suit different tastes and spaces. Designing your bifolding door can be a little overwhelming, so we’re here to talk you through each design step in making your door online.


The first stage in designing your doors is assessing the size. We can offer market leading sash sizes of up to 1200mm wide and 3000mm tall, maximising light, views and solar gain. The size of your bifold doors should be based around the available space you have in the area you will be having your doors installed. The size of your doors will also determine the pane options and configurations.


You can also choose the amount of panes for your bifold which can be dependent on the size of your bifolds. As a general rule of thumb, the more panes in your bifolds, the more obstruction to outside views and solar gain. Our slimline aluminium panes are designed to reap the largest amount of glazing possible. All while retaining a sleek and slim look.

The number of panes can also dictate whether you can add a traffic door to your bifolds. An odd number of panels allows you to have all panes sliding one way with a traffic door. Whereas an even number of panes does not. Read more about this here.

Open Direction

A huge benefit of bifold doors, and by far its greatest appeal, is in its ability to open up an entire wall space, effectively bringing the outside in. Bifold doors fold back against themselves, concertina-style, allowing them to open up to 90%. When open, the stacked panes are pushed to one side. If your bifolds open outward these will be stacked externally, if  inward they’ll be stacked internally.

External (Outward) Opening

Outward opening bifolds are the most popular choice as they allow your home to fully transition to the outdoors, effectively streamlining the outside into an interior. External stacking bifolds also create more space inside a home. As the doors are pushed away from the inside, furniture can be positioned in front of the doors without obstructing access to the outside. But they’re not right for every space.

Internal (Inward) Opening

If you’re wanting your bifolds to open up to a patio or decking area with limited space, and you have the room indoors, then internal stacking may be the best way to go. Inward opening doors make it possible to clean and maintain your bifolds more easily, though as a low-maintenance material with minimal panes, this is not a huge issue with aluminium bifolds.


Our bifolding doors are finished in a thick powder coating colour. This obtains a dense finish that is more durable and longer-lasting than the conventional paint used in many PVC installations. Because powder coating does not have a liquid carrier, it can produce a thicker coverage than conventional liquid coatings without running or sagging. Allowing your bifolds to remain sleek and colourful for years to come.

You can choose both the external and internal pane colour of your bifolds. Available in Anthracite grey, black, traffic white, or any standard RAL colour.  You can also customise the handle colour of your bifold in white, chrome, brushed satin, black, or grey.


We offer double glazing options across our range of bi-folding, patio and entrance doors. With market leading sash sizes of up to 1200mm wide and 3000mm tall, 120mm super slim sightlines create maximising light and views that offer outstanding levels of thermal performanceWith the addition of an Alutech Systems thermal break, our rage of door products are ensured to help you achieve a greener home.


The beauty of bi folding doors is in its ability to bring the outside in. The threshold is a key enabler in this. Eliminating a visual barrier of your door effectively creating a seamlessness between an interior and outside world. To capture this smooth transition,  we offer two main thresholds, Standard and Low, with a number of variations.

Standard (55mm)

Our standard or weathered threshold (55mm) provides the utmost protection whilst still looking sleek and complimenting your overall bifold aesthetic and existing exterior. The standard threshold acts as a full weather break, keeping your home dry and warm regardless of outside elements. Hence, for external bifolding doors, the standard 55mm is recommended, especially here in the UK where we have 195 rainy days a year.

Low (20mm)

Our low threshold (20mm) does not offer as much weather protection but does create a seamless look. A low threshold will be more suitable for internal bifolding doors. For example, between your home and conservatory where it can be flushed for an ultra smooth look. Lower thresholds also present less of a trip hazard than higher thresholds (though minimal). So are more suited for those with mobility issues or small children. While the design may be more striking we do not recommend this for an external bifolding door unless in sheltered areas.

So what’s stopping you? Design you own bifolding door today and receive a quick quote via our online door designer. For any other trade enquiries, our friendly sales team can assist you on 01924 929 600. To find out more about our range of bifolding doors view our product page or email sales@ukdoorsonline.co.uk.

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