If you’re looking for secure thermally-efficient windows with a modern design that will perfectly match the character and heritage of your period property, Haus Heritage windows are just for you.

With their signature slim profiles and sightlines, the Alitherm range is the ideal solution for listed buildings. Featuring thermally-broken profiles, these windows are available in range of designs, including fixed-pane, sash, top and side-hung casement, pivot, and tilt and turn. They can be installed in a combination of horizontal modules which are stacked using our coupling options to form a multi-part window.

A cost-effective and versatile, the Alitherm Heritage windows are suitable for both single and double door application and are available in a wide range of sizes. Each is supplied with a multi-point lock mechanism and face-mounted finger thrown locking bolts.

Ideally suited to a wealth of building styles, Alitherm Heritage windows are perfect for heritage or listed building application. They can also be fitted seamlessly to retro refurbishment and art deco projects with ease.

Featuring slim sightlines, the windows maximise the glazed area when placed inside the stepped frame profiles. The glazing bar options and additional hardware choices give a classical appearance complete with a first-rate operational performance and thermal quality.

The range of dedicated system components means that Alitherm Heritage windows can be easily designed to accommodate external render and cladding finishes. They also prove effective when used as an alternative to contemporary applications that require slim sightlines.

Not only that, Alitherm Heritage windows can be built as a series of individual modules to form a large multi-part window, complete with a flush or feature drip bar. A dedicated external door system with matching frame profiles and hardware is also available to complement the windows. These features are exclusive to the Alitherm range.

Product information

Alitherm Heritage windows feature slim sightlines and attractive contours, making them the ideal replacement for heritage buildings that require like-for-like window replacements.

Every major profiles features polyamide thermal break technology which enhances the thermal properties of each window. This ensures that Alitherm Heritage windows have ‘A’ grade energy rating, provided they are fabricated to the correct specification per glazed unit.

Each profile features a Smart high-quality powder-coated finish and can be sold in a range of finishes, including single or dual colour. There’s also a range of standard and non-standard colours to choose from.


Designed applications

  • Windows: fixed windows, side hung & top hung open out casement
  • Doors: single or double open out balcony doors.

Key features and benefits:

  • Window Energy Rating ‘A’ – when using correct profile, glass unit & spacer bar
  • 6 W/m²K with 1.2 centre pane U value
  • 4 W/m²K with 0.8 centre pane U value
  • Method of fabrication: corner crimping
  • Glazing options 24mm to 32mm (opening windows accept 24mm units only)
  • Gasket glazed
  • High security multi point locking
  • Traditional Art Deco handles available

We are happy to advise and offer more information on how the Haus Alitherm Heritage Windows could work for you and your project. Simply contact us using our contact form, or call us on 01925 571557 to speak with our our experts.

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