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Why Choose Alumina Aluminium Bi Fold Doors?

Alumina Aluminium Bi Fold Doors videos
The range of Liniar bi-folding doors
7 reasons to choose a Liniar bi-fold door
Bi-fold Operation Guide
How to install an Alumina by Liniar bi-fold door

This got us thinking – what if there was a way to create a true aluminium door with the same sculptured profile as the Liniar window system?

What if we could make it the most thermally efficient aluminium bi-fold out there?

And what if we could foil the exterior, so it matched perfectly with uPVC windows?

We did consider multi-material clad hybrid doors – however our feedback showed there are inherent problems with this type of bi-fold. Not only do they require specialist machinery and set-up costs, they can be extremely difficult to fabricate. Furthermore, the warmth of the uPVC is hidden away inside the profile so it’s difficult for consumers to see the benefits of such a system.
A true aluminium bi-fold was the answer.

With these objectives in mind, the Liniar design team embarked on a project to create the first thermally efficient aluminium bi-fold to match a uPVC window system.

The results are clear – Alumina by Liniar breaks new ground with superb strength, high security, low U-values, sculptured lines and a ‘warm touch’ exterior.

And with it, Liniar becomes the first systems company to offer a full suite of fully matching products for any home or building.


Alumina is more energy efficient than other aluminium bi-fold doors – with U-values as low as 1.2 W/m2k.
Liniar were the first to launch a bespoke uPVC bi-folding door system with associated patented hardware and have more than 500 years of industry experience between them – the same team of experts have designed and developed Alumina by Liniar.
The latest development from this ground-breaking company and team, Alumina heralds the arrival of a new breed of bi-folding doors.

So, what are the benefits?
  • 10-year Profile warranty
  • Available from an entry level “C” Rated to an “A+” Energy rating
  • Your Bi-Fold Plus benefits from being fitted with the most robust locking mechanisms on the market
  • Smooth easy action
  • Full colour range
  • Hook locking with shootbolts
  • Secured by Design Security upgrades available on request
  • Minimum size 600mm w x 1850mm h (sash opening sizes)
  • Maximum size 900mm w x 2150mm h (sash opening sizes)
  • Alumina Bi-fold doors are available in a range of opening configurations from 1 to 7 panes so they can be truly tailored to your requirements.
  • Alumina Bi-fold doors are available with a range of powder coated and foiled colours along with additional options, from handles and hinges, to low and half thresholds
  • The Alumina Bi-fold is packed full of innovative features, including folding keys, ergonomic handles and discreet magnets, the attention to detail is what makes the Alumina Bi-Fold ‘best in class.’
  • Our Alumina bi-fold door has been security and weather tested and satisfies the demanding requirements of PAS 24 and Secured by Design.
Why Choose Alumina Aluminium Bi Fold Doors

Choose from a wide variety of colour options including: White, Rosewood, Cream, Light Oak,
Chartwell Green, Grey and classic Ebony Black. Liniar products are also offered in a wide choice of
bespoke colours, please see Renolit foil book, (subject to availability and price on application only).

Colours Available
  • Powder Coat White
  • Powder Coat Grey
  • Powder Coat Black
Bespoke Colour options
  • White Foil
  • Cream Foil
  • Chartwell Green Foil
  • 7016 Grey Foil
  • Black Foil
  • Irish Oak Foil

Colours marked * are from our standard collection, all other colours are subject to price and availability on application. Please note: colours are for illustration purposes, for an exact example please ask your sales representative for a Renolit swatch sample.

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