Bifolding door in your garden office?

Garden office buildings are becoming ever more popular, as they offer an ideal working space that combines the beauty and serenity of nature with the comfort of being just outside your home. With more and more companies agreeing to flexible working hours and employees choosing to work from home, garden offices are being seen in […]

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Bi-Folding Doors

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Aluminium Bifold Doors

Our contemporary doors are handcrafted using the Alutech BF73 bi-fold door system. Choose from individual panels up to 1200mm wide and 3000mm high, all finished with the narrowest of sightlines and offering exceptional thermal performance.

Our 10-year warranty on the powder coated finish and a 12-month warranty on the handles and hardware come as standard.

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With less frame and more glass, our extra-large panel sizes and premium quality hardware offer a truly uninterrupted view.



Our highly-efficient Aluminium-framed doors offer strength, durability and, with U-Values as low as 1.4 W/m2K, maximum protection from the elements.



Pairing the strength of aluminium with our security-led hardware makes our doors some of the safest on the market.

Key Features

Contemporary styles and modern features
Extensive range of colours
Smooth opening and closing made possible by high quality hardware
Robust, built-to-last low-maintenance runners
PAS24 security accreditation for complete peace of mind
Maximum light and minimum frame, with a 120mm sightline
Extra-large panel sizes with sashes up to 1200mm wide and 3000mm high
Enviable thermal performance with U-Values of 1.4 (triple glazed) and 1.6 (double glazed)
Weather rated threshold as standard, with increased mobility options of ramp or low threshold
Floating corner post options allow for uninterrupted views
10-year warranty on powder coated finish and hardware
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Product Colours

We supply our bi-folds in black, white and anthracite grey as standard, but we can offer any bespoke colour option on request.

Anthracite Grey
Ral Colours
Ral Colours

Technical Performance

Weather rated standard threshold with an option for low threshold and ramp for ease of access. There are also a range of sub cills to suit site requirements.
120mm Super Slim sightline stile to stile ensure maximum glass expanse to suit the most demanding commercial or residential project and location.
Security to PAS 24 rating ensures insurance approval and peace of mind.Fabricators can achieve this with some minor upgrades on the hardware.
A U -Value of 1.4 can be achieved by way of triple glazed units, with 28mm double glazing offering 1.6 to meet building regulations.
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Bi-folding doors FAQ's

If you have any questions about aluminium bi-folding doors look no further - we have answered all your common questions!
1. Are bifolding doors thermally efficient?
Yes! Our bifolding doors are manufactured using a top-quality aluminium system that benefits from a thermal break for maximum thermal efficiency. This means that, depending on glass choice, our bifolds can achieve an impeccable U-Value of 1.4.
2. Do bifold doors add value to a home?
Bifold doors are most desirable due to their ability to flood your home with natural light. On top of this, they’re practical for day-to-day use as an easy access to your garden. Along with a whole host of other benefits, these are what can make bifold doors a great addition to any home, and most certainly a good investment.
3. Do I need planning permission to get bifolding doors?
In most cases, if you’re installing bifold doors into your home you will not need planning permission. However, if your property is a listed building or the bifolds are forming a part of a new extension, always ensure to check with your local building regulations first.

Equally, if you are based within a conservation area, check with your local council before going ahead with the installation.
4. How do I measure for new bifolds?
To measure accurately for your new bifolds, follow the steps outlined below:

1. Take a tape measure and record the height of the opening in 3 places; at the left, middle, and righthand side of the opening from the exterior.

2. Repeat step one, this time with the width of the opening.

3. Take the smallest measurements for both the height and width, then deduct 10mm from each to allow for tolerance when installing.

4. Lastly, make sure that the aperture of the opening is square by taking the measurements of the diagonals and ensuring they are the same length.
5. What kind of lintel is needed for bifold doors?
As bifolding doors are not weight-bearing, you will need to have a supportive lintel that is either wooden, concrete, or steel cavity.

As a general rule of thumb, you should also ensure that the lintel has at least 150mm bearing at each end, and that the length of the lintel is at least 300mm more than the opening width.
6. What size of bifolds do you offer?
7. What is a traffic door?
8. What colour can I have my bifolds?
Our bifolds are available in three popular colour options: black, white, and anthracite grey. We even offer the option to choose different internal and external colours, so you can select whatever colour combination your heart desires for the inside and outside of your bifolding door.

Design your perfect bifold online using our easy-to-use design tool, and find a colour combination that suits you.
Hello Doors020 30316543
Mon - Fri, 8am - 5pm
Email us at 
Alpha Place Garth Road
Morden SM4 4TQ

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