Heritage
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Heritage Head Detail
Heritage
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Meeting Style
Heritage
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Threshold Detail
Elegantly Durable Heritage Style
Update your entrance with the Alitherm Heritage door – a premium aluminium solution combining timeless steel-look aesthetics with modern performance.
Key features:
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Slim sightlines that mirror traditional steel doors, ideal for listed buildings or conservation areas.
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Thermal-broken aluminium profile, delivering U-values from around 1.4 W/m²K (double-glazed) and 1.1 W/m²K (triple-glazed).
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Single and double door configurations, open-in or open-out, with a wide palette of powder-coat finishes and hardware styles to suit classic or contemporary surroundings.
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Engineered for renewal and refurbishment: replaces old steel doors or windows while satisfying modern performance and compliance requirements.
Ideal applications
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Heritage and listed-property refurbishments requiring steel-look replacements with modern performance.
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High-end residential projects where entrance aesthetic and performance matter equally.
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Refurbishment of steel-windowed properties converting to doors or creating new access points.
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New build or extension projects where the designer wants the steel-look aesthetic but needs full building-regulation compliance.
Entrance that Commands Character
With the Alitherm Heritage door from Cor-Line Systems Ltd, you get the timeless elegance of steel-look frames with modern aluminium performance. Slim sight-lines deliver the classic aesthetic; thermally broken profiles meet current thermal standards.
Performance built in
Designed for refurbishment or heritage projects, this door is as strong as it looks. With U-values from approx. 1.4 W/m²K (double glazed) and as low as 1.1 W/m²K (triple glazed) it complies with Document L and meets modern building requirements.
Bespoke finishes, built for your project
Choose single or double configurations, open-in or out, and from a wide palette of finishes and heritage-style hardware. At Cor-Line Systems Ltd we tailor every Alitherm Heritage door to your specification and support you through supply and installation.