Aluminia Bi-Fold Doors

Superb Strength

We take pride in listening to the needs of our customers. Feedback makes it clear that there’s a need for aluminium bi-folds for larger and more heavy-duty applications, matching the quality of a uPVC window system.

This got us thinking – what if there was a way to create a true aluminium door with the same sculptured profile as the The Signature Collection 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 The Signature Collection 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 The Signature Collection breaks new ground with superb strength, high security, low U-values, sculptured lines and a ‘warm touch’ exterior. And with it, The Signature Collection 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.

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

Patio Configurations

10 Years Mechanical Warranty on

Friction Stays | Window Handles | Sentinel Easy Fit Locking Mechanisms

Lifetime Coating Warranty on

Marine Grade Stainless Steel Gold | Chrome Door Handles & Letter Plates

Colour Options

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. The Signature Collection 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.

Why Work With Us?

Approved & Accredited…

We are approved and accredited Corgi installers. That ensures your windows and doors are installed to the highest of standards and are protected for years to come.

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