Aluminium Bifold Doors

Our modern Aluminium bifold doors offer an excellent solution to allow in more light and space.

If you have the space to stack the Bifold Doors to the left or right, or on both sides, when they are fully open, then a Bifold Door could be ideal for you. Bifold doors can be fully opened to around 90 per cent of the full opening width, allowing you the flexibility to let in lots of fresh air and move around freely. On days when you don’t wish to open the doors fully, you can choose to have a single traffic door, allowing you easy access between your home and garden all year round.

Our Aluminium bifold doors offer the best weather resistance of any bifold in the UK and are made to bespoke sizes to suit your project and are available in seven colours from stock. Our door handles are designed exclusively by us and are made from stainless steel.

  • Industry leading weather rating
  • U-Value of 1.4 with double glazing
  • Fully weather rated standard threshold
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Key features of Aluminium Bi-fold Doors

  1. Industry leading weather rating
  2. U-Value of 1.4 with double glazing
  3. Fully weather rated standard threshold
  4. 3 single colours from stock and 1 dual colour or any RAL colour, dual colour or textured finish available.
  5. Black Anodised finish available
  6. designer door handles
  7. discreet locking intermediate handles in 4 finishes
  8. very slim frames, more glass area
  9. 3 star diamond rated cylinder with kitemark
  10. Up to 7 opening sashes


  1. Low threshold
  2. PAS24:2016 enhanced security
28mm square bead as standard for double glazing.
36mm square bead available for triple glazing.
Colour Options

We can supply doors and windows in any RAL We can supply any RAL colour, luxury textured effects or anodised finishes, which includes Marine Grade. All painted and finished in our advanced paint finishing facility at Kawneer Runcorn, in Cheshire.

From stock, we supply:
Single colour:
White Gloss
Anthracite Grey Matt

Dual colour:
Anthracite Grey Matt outside with White gloss inside

Sash options 2, 3, 4, 5, 6 or 7 panels
Inward or outward opening doors
Sliding options to left or right
Black TPE
General Description
Totally bespoke bi-folding doors designed and manufactured by KAT to fit your application. Excellent thermal, acoustic and security performance. Huge range of bi-folding configurations from KAT the UK market leader with a 10 year manufacturers’ guarantee.
28mm double glazed sealed units as standard, when requested
Planitherm Total Plus Low Emissivity, soft coat glass
Clear or Obscure
Argon filled units
Warm Edge Spacer (Black or Grey)
Standard U value of 1.6 W/m2K
Triple glazing can be accommodated up to 36mm.
Stainless steel wheels
Stainless steel rollers
Lever/Lever handles on master door
Intermediate handle in Brushed Steel to operate shoot bolt
Shootbolt locking
3 star diamond rated cylinder
Outer frame
Frame width: min. 1500mm (based on 2 panels)
Frame height:
minimum 1930mm maximum 2930mm
Sash Options
Sash width:
minimum 700mm to maximum 1200mm
Sash weight:
maximum 120kg
Security and Performance
System has been independently tested to meet PAS 24:2016
Threshold Options
45mm Threshold – thermally broken, with full weather rating.
24mm Low Threshold – thermally broken, not severe weather tested


We can offer 'Secure by Design' on our window and door ranges.

Energy Efficient

Energy Efficient

U Values from 0.7, A* Energy Rated, and environmentally conscious products.



Many of our products comply with FSC, PAS 23/24, CE Marking, and are tested by BM Trada.

Project Management

Project Management

Professional advice and guidance for all building projects.

Andrew James


"My experience with International Doors and Windows was excellent. They were competitive on price and provided top quality products and services."

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