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Aluminium Bifold Door

Stellar Aluminium bifold doors have all the strength a bifold needs and pack a real punch with its ultra-slim sashes. Slimline bifolds allow you to enjoy unobstructed views of the garden, whilst creating a seamless transition between the indoors and outdoors. Creating a light welcoming space with more natural light, our secure aluminium doors are strong, reliable, and bespoke to your requirements.

band C

U-Values as
low as 0.9W/m2K

Air permeability
tested to 600Pa

Water tightness
to 150Pa

Wind load resistance<
to 1200Pa

Double or
triple glazed

Bring the outside in

Wouldn’t you love a door that simply folds out of the way? A home where the boundary between indoors and out can simply disappear, giving you the freedom to create an incredible space for entertaining, relaxing or spending time with family and friends?

That’s the beauty of a bifolding door, but not all bifolds are built the same.

Why Aluminium Bifolds?

Quality is essential. To cope with the weight and forces, Stellar aluminium bifold doors strength and engineering are ideal. The ultra-slim sashes pack a real visual punch and because there’s thermal break technology throughout the system, this bifolding door insulates your home, ensuring It’s comfortable all through the year.

Bifold Options

The layout of your Stellar bifolding door is configurable. Its track systems are robust and reliable, and security is built into the design. Any finish, any colour, and hardware that’s been tested to perform year after year.


The range of threshold options in Stellar’s product portfolio can meet various access needs. Some threshold systems can be set into the floor, for an almost seamless transition. Others are designed to offer easy access for wheelchairs, and for exposed locations there are deeper thresholds which have been developed to channel water away from your home.

Bifold aluminium doors in black external bifold aluminium doors in black
  • Up to seven sashes
  • Sashes – min 750mm, max 1200mm (W).
  • Max height 2500mm
  • Maximum weight of 120kg
  • Overall width max 6500mm
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  • U-values as low as 1.3W/m2K (double glazed) 0.9 W/m2K (triple glazed)
  • Can achieve Part L compliant
  • 28mm double glazing as standard
  • Double hinge fixing for reliable long-term performance
  • Multipoint locking and high-security shootbolts
  • Parallel stainless-steel tracks for ease of operation and stability
  • Quad stainless-steel rollers with wiper brushes spread load and resist debris build-up
  • Robust corner cleat system for strong precise corners
  • Weather performance to BS6375-1
  • Meets Building Regs without foams or special polyamides.
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  • Slim sightlines: 117mm meeting stile
  • Suites with other window & door systems – common aesthetics
  • Wide choice of colours
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  • Pre gasketed system
  • Sash and outer frame mechanically jointed
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  • 20 minutes per pane quicker to install
  • Patent pending adjustable lock stile and pre gasketed system
  • Flat backed frames
  • Easy to glaze
  • Knock-in beads.
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  • 10-year mechanical performance guarantee
  • 25-year surface paint finish guarantee
  • Lifetime security guarantee on hardware
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  • Multiple options including left, right and both sides stacking
  • Choice of access door position
  • Wide choice of handle colours.

Bifold Door Configurations

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Standard Colours

Signal White
RAL9003 Flat Matt

Anthracite Grey
RAL7016 Flat Matt

Anthracite Grey / Signal White
RAL7016 / RAL9003 Flat Matt

Non-Standard Colours

RAL9001Flat Matt

Agate Grey
RAL7038Flat Matt

Slate Grey
RAL7015Flat Matt

Chocolate Brown
RAL8017Flat Matt

Anthracite Grey

Jet Black
RAL9005Flat Matt


Stellar’s quality demands an equally high-quality range of hardware.

aluminium casement window handle in white

Casement Window

Tilt & Turn Window

aluminium door handle

Flush Door

lift and slide door handle

Lift & Slide Door

Bifold Door

Colours and Finishes

Handle finishes have been selected for scratch resistance and durability as well as their ability to complement the finish of frames.

silver handle

Satin Silver

chrome handle

Polished Chrome

white handle


black handle