uPVC Bi-folding Doors

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Premium quality uPVC Bi-folding Doors designed & manufactured in the UK


Like our aluminium bi-folding door, our uPVC timber alternative bifold will satisfy your desire for more light and space and offers a stylish link to the world outside, spanning up to 6 metres. When it came to developing our own uPVC bi-folding door, we specified that the suite of profiles must be purpose-designed for the job and that is why we believe we offer the ‘best of bifolds’, with slim sightlines, dedicated accessories and durable, trouble-free performance.

Key features of uPVC Bi-folding Doors

  • Virtually maintenance free
  • Purpose designed system, guaranteed to perform for many years
  • 3 star Diamond rated cylinder with kitemark
  • Competitively priced solution
  • Vanguard handles with 10 year guarantee
  • Handles available in Chrome, Satin, Black, Grey, White and Gold
  • Less frame in your sightline because of the way we build the doors
  • An impressive range of foiled timber alternative finishes including white, grey, black, golden oak, Irish oak and rosewood
  • A fold-flat ‘D’ handle which lies flush on the door, engaging shootbolts when locked closed

Chamfered as standard
Ovolo option available.
Foiled options - Cream, Golden Oak, Rosewood, Black Ash, Grey Ash and Irish Oak.
Foil options available on white.
2,3,4,5,6, & 7 sash options.
Open in or out, with left and right sliding options.
Minimum sash width - 600mm
Maximum sash width - 900mm
Minimum door width - 1200mm
Maximum door width - 6000mm
Minimum door height - 1000mm
Maximum door height - 2300mm
General Description
Stunning modern design to open up rooms to views and outdoors. Easily folded back either stacked inside or outside. Available in colours and foils to match your design aspirations. Superb weathering qualities and available in many configurations to a maximum of 6 metres wide
Standard unit size 28mm
Option for 36mm triple glazing
Hardware Options
Unique shoot bolt mechanism as standard
Finger operated shoot bolts on traffic door
Twin tandem nylon wheels.
Top rollers with anti-jemmy pins
Hardware colours - standard white and black, with satin silver and champagne as options.
KAT handle in marine grade stainless steel in black, white, anthracite grey, brushed chrome, chrome and gold.
Designed, tested and manufactured to PAS 24 standards.
Standard threshold - 65mm
Weathered low threshold (aluminium) - 30mm (mobility ramp options available)
Room divider (aluminium) - 15mm - not weathered
Tested under severe weather conditions (BS6375) and PAS 24
Air permeable - 600 Pa
Water penetration - 600 Pa
Wind loading - 1200 Pa
Door U value 1.3 W/m2K, dependant on glass option selected.
Maximum weight per sash - 80kgs



Our KAT uPVC bifold is one of the most successful products we have ever launched and given the durable, innovative design, we have extended the warranty on this product to 10 years.

It has been severe weather tested to BS 6375/1:2009 and is certified to PAS23 and PAS24, making this the best performing uPVC bifolding door in the UK. We can also match all the usual timber alternative finishes on uPVC windows or can paint the doors any colour.



Blinds Within Glass


Integral venetian blinds are made to fit neatly between 2 panes of glass, offering a contemporary look for Bifold Doors in a choice of 10 colours; White, Yellow, Hay, Sage, Sky, Cream, Putty, Silver, Dark Silver and Dark Grey. 

Raising and lowering of the blinds is controlled using either a Rotational Wand, Rotational Knob or a Cord system. The blinds carry a 5 year guarantee, are maintenance free, conform to BSEN 13120 Safety Standards and are suitable for 28mm double glazed door sashes up to 1200mm wide.

Material Information


We have a very wide range of timber alternative grain finishes for our uPVC bifolds including dual colour  with different colours each side. We offer a 10 year warranty on all timber alternative foil finishes on uPVC. And of course, every finish is virtually maintenance free.




We also offer you a complete range of accessories from handles, to threshold options, to opening configurations.

Our bifolding door handles are luxury products, made exclusively to a KAT design and are available in White, Black or Grey Cast Iron and Satin, Chrome or Gold Stainless Steel. Each of our handles carries a 10 year guarantee.

Please consider your choice of ancillary hardware carefully because that is what you will eventually notice most when your products are installed. Check out the finishes on our handles because it is attention to detail that helps make this unique product range so exciting.




Safety & Security


Our doors are designed to discourage a determined intruder, thanks to our high security locking systems.  

The master door has a high security lock and the intermediate ‘D’ handle operates a shootbolt to provide intermediate security. These features help prevent our bifolds being lifted off their base channel or being jemmied when closed. All KAT doors are fitted with a 3 star Diamond rated cylinder for your security.

Safety & Security

Colour Options


A little time and care with your choice of colour is advised and your selection should be influenced by your style of property, surrounding architecture or your other windows and doors. KAT uPVC Sliding Patio Doors are available in:

  • White
  • Cream
  • White Foil
  • Golden Oak on White & Golden Oak both sides
  • Rosewood on White & Rosewood both sides
  • Irish Oak & Irish Oak on White
  • Black Ash on White
  • Anthracite Grey on White