Timeless Elegance
The Alitherm Heritage system combines a timeless aesthetic with modern performance, delivering the advantages of quality aluminium while maintaining a classic look for listed buildings and heritage projects.
Our Alitherm Heritage aluminium windows provide a stylish and energy-efficient solution, making them ideal for both new builds and renovations. Designed specifically for projects requiring sympathetic materials, they offer exceptional energy efficiency, effectively reducing heat loss and condensation while allowing maximum light into your space.
The Alitherm Heritage system combines a timeless aesthetic with modern performance, delivering the advantages of quality aluminium while maintaining a classic look for listed buildings and heritage projects.
Featuring advanced thermally broken profiles, our aluminium windows provide superior energy efficiency, keeping cold air out and warmth in, which contributes to a comfortable indoor environment year-round.
Choose from various configurations, including casement, sash, and tilt-and-turn styles, allowing you to create custom solutions that maximise natural light and suit your specific project requirements.
Our aluminium windows are built to the highest quality, offering extraordinary durability and low maintenance while delivering practical benefits and aesthetic appeal. The combination of style and functionality makes them an ideal choice for any property.
Heritage aluminium windows replicate the slim, authentic proportions of traditional steel while providing modern thermal performance. Slim transoms and mullions echo original sightlines, making them suitable for sympathetic renovations where character matters. With putty-line detailing, glazing bars and hardware choices such as monkey-tail, art-deco or flush handles, you can match the period aesthetic without compromising on efficiency or ease of maintenance. Dual-colour options from the full RAL palette allow a heritage exterior tone with a crisp, contemporary interior finish. See examples of slim aluminium heritage installations on our recent projects, including Project Aldgate.
From listed and conservation-area refurbishments to contemporary extensions and new-builds, our slimline and heritage aluminium windows offer the versatility specifiers need. Systems are designed to support compliance with UK Building Regulations, while heritage-style profiles help satisfy local authority expectations on sensitive schemes. For internal partitions or matching doors and screens, explore our complementary aluminium ranges to create cohesive, light-filled spaces throughout the property.
Our aluminium windows feature thermally broken frames, modern weatherseals and high-spec glazing to minimise heat loss and condensation. Typical configurations deliver competitive U-values and excellent air, water and wind resistance, with frame depths and slim sightline dimensions selected to suit each opening and architectural style. Choose from casement, fixed, tilt-before-turn or bespoke shapes (including arches) with tailored glazing bars and astragals to refine the design intent.
A meticulous survey-to-handover process ensures accuracy, finish quality and seamless integration with surrounding fabric. Our experienced installers coordinate with your contractor or architect to achieve clean lines, correct tolerances and reliable sealing. Products are supported by insurance-backed guarantees for long-term peace of mind—reflecting our commitment to performance and aftercare.
Colours
Our aluminium windows are available in a vast array of frame colour options, including classic black and contemporary hues. The iconic black steel finish is not only visually stunning but also seamlessly complements a range of architectural styles, ensuring a stylish and cohesive look for your property.
Hardware
Select from an array of hardware options for your aluminium products, including durable hinges and locks designed for optimal functionality. Our choice of high-quality finishes provides both aesthetic appeal and reliable security features for your windows.
Downloads
Access our downloads section below to discover vital specifications and design options for our aluminium windows, engineered to offer exceptional performance and modern style for both residential and commercial applications.
We address some of the most frequently asked questions regarding our aluminium windows, providing you with essential information to help you make informed choices for your project.
Aluminium windows offer exceptional durability, low maintenance, and energy efficiency. This makes them a popular choice in the UK, with their strength allowing for slim frames and larger panes that let in maximum natural light.
Yes, our aluminium windows feature thermally broken profiles that provide exceptional energy efficiency, helping to keep your home warm and lowering heating costs.
Absolutely! Our aluminium windows are available in a variety of RAL colours, allowing you to choose the perfect frame colour to complement your property’s aesthetic.
Our aluminium products require little maintenance. Regular cleaning will keep them looking great while preventing moisture build-up or condensation issues, ensuring long-lasting performance.
Yes, our windows come with high-quality locks and robust construction, providing peace of mind with their superior security features, backed by excellent customer service.