Alitherm Heritage Windows

When specifying windows for heritage, renovation and refurbishment projects in listed buildings and conservation areas, the Alitherm Heritage system fits the bill.

With ultra-thin sightlines and an attractive profile, this double glazed window is a virtual match for old steel frames, but with high performance thermal break technology.

Aluminium heritage windows also meet modern security and weatherproofing standards, while maintaining a traditional steel-look.

Keep reading for more information about the product specifications for Alitherm Heritage windows or read more about buying from Amberley.



  • Thermally broken aluminium casement windows are available in side hung and top hung open out options, with multipoint locking.
  • Glazing options 24mm to 32mm.
  • Choice of window hardware includes monkey tail handles, bulb end handles and peg stays.
  • Alitherm Heritage windows are available in any standard RAL, British Standard or silver anodised finish, in single colour or dual¬†colour.