ALUMINA BY Pearl Window Systems

This got us thinking – what if there was a way to create a true aluminium door with the same sculptured profile as the Pearl Window Systems window system? What if we could make it the most thermally efficient aluminium bifold 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 Pearl Window Systems 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 Pearl Window Systems breaks new ground with superb strength, high security, low U-values, sculptured lines and a ‘warm touch’ exterior. And with it, Pearl Window Systems 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 bifold doors – with U-values as low as 1.2 W/m2K.

Pearl Window Systems 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 Pearl Window Systems. The latest development from this groundbreaking company and team, Alumina heralds the arrival of a new breed of bi-folding doors.

Standard Colour Options

Rosewood both sides*
Golden Oak both sides*
Anthracite Grey both sides*
Cream foiled both sides*
White foiled both sides*
Ebony Black both sides*
Irish Oak both sides*
Smooth Cream through colour*


Bespoke Colour Options

Rosewood on White*
Golden Oak on White*
Anthracite Grey on White*
Cream foiled on White*
Chartwell Green on White*
Ebony Black on White*
Agate Grey
Silver Grey
Basalt Grey
Dark Green
Dark Red


Colours marked * are from our standard collection in featured profile, 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. Choose from a wide variety of colour options including: White, Rosewood, Cream, Light Oak, Chartwell Green, Grey and classic Ebony Black. Pearl Window Systems products are also offered in a wide choice of bespoke colours, please see Renolit foil book, (subject to availability and price on application only). Please note: Ebony Black both sides patios and bi-folds are subject to lead time.

Additional Information

  • 10 Years 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 1200mm w x 2500mm h (sash opening sizes)


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