Introducing the WarmCore aluminium sliding patio door system.


There’s never been a better product to meet the demands of the growing aluminium patio market. Sleek, stylish and offering flawless operation, the WarmCore Inline Patio Door utilises the same innovative full-width thermal core technology as the rest of our market-leading range.

Built around a belief that beauty doesn’t have to compromise performance, WarmCore Patio sliding door was created out of a desire to combine the desirability and durability of aluminium with unparalleled features

Packed full of unique features

The Inline Patio offers the super slim sightlines your customers desire without compromising on security. Designed to exacting specifications, the patio door features a unique

bi-directional lock. 

Smooth 10 wheel roller

The WarmCore inline patio uses a wheelset with each sash running on 10 self-levelling rollers to give you an ultra smooth, reliable performance.

Exceptional Thermal Performance

Incorporating Warmcore’s pioneering full-width thermal core, the Inline Patio achieves market-leading thermal performance with a double-glazed U Value of 1.4 and a triple-glazed U Value of just 1.0.

Modern Styling

For a truly modern look, the WarmCore sliding patio door offers bold shades including Pure White and Anthracite Grey, with dual colour available, with a range of sash and hardware options.

Thermal Core

At the heart of WarmCore products is a thermal core which significantly out-performs the polyamide thermal breaks commonly used in other aluminium systems. The fully concealed, bright orange, multi-chambered core maximises the use of lower conductivity material to improve thermal performance by up to 25%.

Dual Colour

WarmCore windows and doors come in four distinctive, modern colours and offer unrivalled thermal performance compared with traditional aluminium systems. 


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All of our products brochures are available to download as

a PDF file