Where Heritage Meets Contemporary Design
Alitherm Heritage windows bring the much-loved charm of traditional steel-look designs into your home, but with all the comfort and reliability of modern aluminium. Their slim sightlines, classic detailing and durable, low-maintenance frames make them an ideal way to refresh a heritage property, add character to an industrial-style space or elevate a modern home with timeless style.
Find your styleKey Features & Benefits
As with all our products, safety, security and longevity is paramount. Blending period charm with advanced aluminium technology, there are many benefits that make the Alitherm Heritage range the ideal choice for restoration and renovation.
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Built from high-quality aluminium that won’t rust, warp or fade.
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Modern insulated frames and high-performance glazing.
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Slim frames that replicate the classic steel-look style.
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Traditional aesthetics with glazing bars and refined profiles.
Be Inspired
Take a look through our gallery of completed projects and inspirational designs to find ideas you’ll love for your own home – from elegant entrances to bright, open living spaces.
Endless Possibilities In Style And Form
Alitherm Heritage windows are available in a wide range of styles to suit every home and every room. Choose from fixed panes for a clean, minimalist look, traditional sash windows for timeless character, or practical top-hung casements that combine classic styling with everyday functionality.
The Alitherm Heritage range also includes beautifully crafted single and double doors in a variety of sizes. With secure multi-point locking systems and easy-to-use hardware, they make it easy to create a heritage look throughout your home.
Colour Options to Match Your Style
Choose from a wide range of durable powder-coated finishes, including classic whites and greys, bold contemporary shades and premium textured options. You can even opt for dual-colour frames to match your interior and exterior perfectly — and for complete flexibility, we can also spray your aluminium windows in any RAL colour.
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White
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Steel Grey
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Silver Grey
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Platinum Grey
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Pebble Grey
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Painswick Stone
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Olive Green
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Off White
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Obsidian Black
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Mars Red
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Grey
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Cotswold Green
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Black
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Bath Stone
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Anthracite Grey
Answering Your Questions, Simply & Clearly
If there’s anything else you would like to know about our aluminium
windows, our team is always here to help.
Can I customise the colour and finish?
Definitely. You can choose from a wide palette of modern and heritage colours, including dual-colour options for different interior and exterior finishes.
Do aluminium windows require much maintenance?
Very little. Aluminium is extremely durable and won’t rust, warp or need repainting — a quick wipe-down is usually all that’s needed.
What glazing options are available?
These windows can accommodate high-performance double glazing, helping to improve thermal efficiency and reduce external noise. Glazing options can also be selected to enhance privacy or match the character of your home, without compromising the slim, heritage-style sightlines.
We’re Here To Help
Whether you’re starting a new project or simply exploring your options, our friendly team is ready to guide you every step of the way. Reach out with any questions—big or small—and we’ll make sure you get the support, clarity, and confidence you need to move forward. Your home is important, and we’re here to help you make the most of it.