Alitherm Heritage has been designed to offer a solution for heritage properties and building renovation projects where there is a need for a modern replacement for old steel.
Replace your old drafty steel doors with modern secure, thermally efficient steel replacements.
Replicate the appearance of traditional steel doors from a bygone era with classic glazing bars and panel designs to create a vintage look.
Some of our recent steel replacement projects:
The Smart Alitherm Heritage door is the ideal replacement for steel doors on heritage applications such as building renovations or apartment conversions.
The Alitherm Heritage door provides the solution for conservation areas where planning regulations require a like-for-like product replacement.
Alitherm Heritage door profiles feature the system's signature slim sightlines and elegant lines that complement Smart's existing Alitherm Heritage window and mimic those of steel doors.
The system has all the advantages of modern aluminium profiles that feature polyamide thermal breaks, allowing the system to achieve a U Value of 1.5 W/m2k when installed with a suitable sealed unit.
Doors: single or double open out balcony doors
Window Energy Rating ‘A’ – when using correct profile, glass unit & spacer bar
1.5 W/m²K with 1.0 centre pane
1.2 W/m²K with 0.7 centre pane
Method of fabrication: corner crimping
Glazing options 24mm to 32mm
Tape or gasket glazed
Traditional Art Deco handles available
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Section identification Guide
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Supply only – Guide to installation