Our Whiteline Alumina Bi-folding doors breaks new ground with supreme strength, high security, low U values, sculptured lines and an optional warm touch foiled exterior.

Its clear to see that whilst the Alumina Bi-folding door is aluminium it has strong PVCu influences so matches well with existing PVCu installations. As well as a combined lock and thermal insert, it also features a high strength engineering polymer lock body which acks as a thermal break, boosting the thermal performance compared to traditional aluminium doors. View Brochure

Alumina doors are supplied as standard in plain white, black or grey powder coated finishes. Alumina bi-folds can also be ordered with a wide range of different coloured precision factory-fitted foils, ensuring a perfect match to our PVCu windows and doors. All Alumina bi-folding doors are available with many different threshold options to give your customers plenty of choice:

Key benefits of the Alumina Bi-Folding Door

  • Alumina can be foiled to match PVCu windows (any power coated colour is also available)
  • It features the exact same sculptured profile as the Liniar PVCu windows and doors
  • Its more thermally effecient than other aluminium doors, thanks to an innovative thermal lock
  • It can be double glazed (1.5 U-value) or triple glazed (1.2 U-value)
  • It can span openings up to 6.5m wide with sashes up to 2.5m high
  • Alumina doors are fully tested for Secured by Design and accredited to PAS24
  • Comes with our standard 10 year guarantee
  • Easier for installers to bead after glazing when foiled, as beads are supplied in the more flexible PVCu standard beads.

Additional Information

Handle Options

  • Handle Colour OptionsOn launch, Alumina doors will have the option of 5 handle colours to make the product compliant.

    • White
    • Black
    • Gold
    • Chrome
    • Dark Chrome


Hinges and Rollers

  • Alumina RollerTo keep the product compliant still further, there are four matching sets of rollers and hinges that can be specified.

    • White
    • Black
    • Gold
    • Chrome

One Piece Lock

  • Alumina One Piece LockThe combined lock and thermal insert ensures that the product is not compromised with cold barriers. With multiple Bi-Directional Shoot bolts securing into the tracks, along with anti-theft features. The door is, as you would expect, part Q compliant.

Threshold Options

  • All our Alumina Bi-folding doors are available with many different threshold options.



    • 62mm Frame Only
    • 62mm Frame and 150mm Cill
    • 23.5mm Low Threshold
    • 26.5mm Low Threshold and Half Ramp
    • 26.5mm Low Threshold and Full Ramp (Part M Compliant)

Associated Documents