Alitherm Heritage Windows

In general, Alitherm Heritage provides us with a modern solution to a traditional steel window. Better thermal efficiency, no rust and a 40 year typical lifespan. There’s no need for re-painting, or any form of serious maintenance – simply wipe down with a warm, damp cloth.

To best achieve a thin a uniform heritage look, outward-opening casements and doors are the best way to go, although there is a slightly wider tilt-turn frame available too. Handles are black as standard, and there are many others to choose from if you require a more art-deco style, or perhaps a traditional monkey-tail. No matter which handle you choose, it will connect to a multi-point locking system within the frame. Both casements and fixed lights have been tested to PAS24.

Adding trickle vents for background ventilation are an option – either as an additional frame piece, or as an extra section inserted above the glass unit. If you experience a noticeable amount of humidity inside your home, we recommend fitting these.

Alitherm Heritage is especially useful for replacing windows within thin stone mullions. The incredibly slim 47mm frame depth is perfectly suited to these, and including an odd-leg (or z-section) forms a neat cover over a small part of the angled external section of a stone pillar.