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Our range of Aluminium bi-folds are the perfect addition to any modern home. The sleek aluminium finish is available in many colours to suit all homes and tastes, and our unique stacking system means you can maximise your living space in a practical fashion. You can choose from a variety of stack configurations, so you can configure your doors to open the way that best suits your home.

WarmCore is an innovative aluminium folding sliding door system which incorporates a radically different product design approach to deliver a new high performance fenestration framing solution: “warm aluminium”.


  • Unique fold and stack system to maximise living space

  • 10 year insurance backed product guarantee

  • Made to measure for the perfect fit

  • Large range of colours and layout styles to suit every home

  • A Rated Energy Efficient Glass units as standard


At the heart of the Aluminium Bi-Fold doors is a thermal core which significantly out-performs the polyamide thermal breaks commonly used to reduce the threat of cold bridging on aluminium windows and doors.


The result is an innovative “warm aluminium” frame construction, carefully dimensioned to provide an optimised 70mm front-to-back overall sash frame depth while ensuring market-leading thermal performance thanks to the multi-chambered insulating core.


Fully concealed multi-chambered cores substantially improve thermal performance when compared to thermally-broken aluminium doors.

WarmCore has been designed from the ground up to offer market leading thermal performance, protecting against future tightening of Building Regulations. Using standard double glazing the WarmCore folding sliding door achieves a U-value of 1.5, with U-values as low as 1.0 achievable using 44mm triple glazing. The advantage against traditional aluminium doors is clear, with many struggling to meet current legislation.

The WarmCore folding sliding door has been designed to be as fitter-friendly as possible. The innovative clip-in bead design makes it easy to glaze without the need for wedge gaskets and all round concealed fixings provide improved aesthetics. The clever aluminium track design also enables a quick all-in-one fitting procedure without the need for de-sashing, if required.


To aid perfect trouble free installations plain hinges, pivot roller hinges and espag hinges provide +/- 1mm adjustment to cater for fine tolerances on site. Single roller and double “pivot” rollers provide +/- 3mm vertical adjustment for precision installation.


Four aluminium colour finishes are readily available from stock, providing 16 possible colour configurations to sell straight from stock including dual-colour options: Other bespoke colour available on request.



From the rollers to the handles to the corner assemblies, WarmCore displays an elegance of design that translates into a high performance installed product that looks outstanding.

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