In recent years, bifold doors have become a popular addition to modern homes in Exeter and throughout the South West. Combining space-saving concertina-style openings with large expanses of glass, bifold doors connect garden spaces like no other door system around.

So, as the popularity of bi-fold doors continues to rise, we thought we’d address this frequently asked question:

What’s the best material for bi-folds? PVC vs Aluminium

Grey aluminium bifold door installation

At Doors and Windows Exeter, we offer 3 high-quality aluminium bifold door brands from Smart, AluK, and Raum. Providing a range of high-quality uPVC windows, as well as sleek aluminium windows, we are firm believers that aluminium is the ideal material for contemporary bi-folding door systems – thanks to its superb strength, durability, energy performance, ultra-slim sightlines, and incredibly low-maintenance attributes. Unable to bend, warp, rot, flake or corrode, the inherent strength of aluminium makes it the ideal material to hold the large swathes of glass that bifold doors are renowned for.

What are the best aluminium bifold doors?

This is quite an open-ended question, as it all depends on what you want from your new bifold doors. For ease, we’ve put together the following aluminium bifold door reference table to help you with your decision.

AluK bifold doors Raum bifold door Smart bifold doors
Min. U-value 0.9 W/m2K 1.1 W/m2K 1.5 W/m2K
Min. sightline width 97mm 131mm 132mm
Glazing 28mm – 44mm
Internal bead
12mm – 55mm
Internal bead
24 – 36mm
Internal bead
Security PAS24 tested & Secured by Design accredited PAS24 tested & Secured by Design accredited PAS24 tested
Max. sash height & width 2500mm x 1200mm 3000mm x 1200mm 2500mm x 1200mm
Max. door leaf no. 7 7 7
Threshold options Low threshold High Performance, medium Performance,
low level & floor level
Rebated, low level & floor level
Style Chamfered or square bead options Chamfered or square bead options Chamfered, square, or bevel options
Colours Dual colour & anodised finishes Anodised or polythene powder coat finishes, dual colour, wood-effect & premium scratch-resistant metallic Coatex finishes. Standard, non-standard, metallic, wood-effect, dual colour & Smart’s Sensations range of textured finishes
Hardware Handles & accessories Handles & accessories ‘Smart Spark’ hardware & accessories

Contemporary aluminium bifold doors Exeter

Interior view of a white aluminium bifold door

Whether you’re looking for beautiful bifold doors for your own home improvement project or you’re a local tradesperson searching for high-quality aluminium bifold doors, you’re definitely in the right place! Get a free quote or contact our friendly and knowledgeable team for expert advice and support.

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A service you can rely on

"Through a recommendation, I popped into the office to see if they could help me source a new door handle. Nick was extremely helpful and ordered one for me through a company they use. I will certainly recommend the company to family and friends and I will use them for replacement windows and doors in the future. Many thanks for the free tin of silicone spray!"

- Sue M. 5

"Brilliant local company. Installed a new door for my father (after a recommendation by a friend). Great product, great price, but (& I can not stress this enough) their kindness & care dealing with an elderly gent, especially regarding the guarantee (so both myself as his son & he could have a copy) was amazing. I genuinely did not believe service like this existed any more. Lovely people to do business with & a company I can thoroughly recommend."

- Ashley D. 5

"Doors & Windows ( Exeter) have provided a first class service from start to finish. Nothing was too much trouble and when it came to a small problem it was sorted immediately without any hesitation. I would thoroughly recommend Nick, Rob and the team. It’s so pleasantly refreshing to find a company who put their customers first. Thank you."

- Lisa S. 5

"Nick and his team fitted some new doors and windows at the back of our lean to. The service from start to finish was excellent and the new doors and windows make the lean to look like a new room! Would highly recommend."

- Mark F. 5

"Excellent delivery of service and installation (11 windows and 1 door). Thank you Tom for a job well done! Clean and very efficient. We were recommended by word of mouth to use Doors and Windows and would not hesitate to recommend this company ourselves. Many thanks."

- David G. 5

"Cannot fault customer service in anyway from this firm we called in reference to get a quote to replace some windows. Nick came out the same day was very helpful with ideas and suggestions of what types of windows that would suit and with 24 hrs a quotation was waiting in my inbox. We shall be almost certainly be putting an order in shortly. Cannot recommend this company more highly to anyone thinking of new windows or doors should definitely give Nick a call."

- Terry Bowen 5


Fensa registered

Members of the FENSA Competent Person Scheme (CPS), this enables us to self-certify compliance under Building Regulations without having to apply for a separate assessment from Building Control which can be a lengthy process.


QANW insurance backed

Accredited providers of Quality Assured National Warranties (QANW), we are committed to protecting your home improvement investment far into the future. QANW offers vital consumer protection via an insurance backed guarantee, for complete peace of mind.

Factory & offices located in Exeter

  • 7 Ashton Business Centre, Ashton Road,
  • Exeter, EX28LN
  • Mon-Fri: 8am-4.30pm,
    Saturday: 8am-12pm, Sun: closed

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