Steel-Look Aluminium Heritage Doors
Bring the timeless industrial aesthetic to your home with KJM Group’s premium steel-look aluminium doors. Serving Hampshire, London, and surrounding counties, we specialise in the market-leading Sheerline Prestige and Smart Alitherm Heritage ranges.
Designed to replicate the iconic slender sightlines of traditional steel glazing, our doors offer the perfect blend of Art Deco charm and modern A-rated thermal efficiency. Whether you need high-security external patio doors or stylish internal room dividers, our heritage collection connects your living spaces with light and elegance.
Transform your property today. Contact our expert team to discuss your project or request a free, no-obligation quote.
Key Product Features
- Period-Inspired Design
Our Heritage doors feature the iconic, ultra-slim frames associated with Art Deco architecture. This “Steel-Look” aesthetic perfectly complements both traditional period homes and modern new builds. - Superior Thermal Performance
Unlike original steel windows which were cold and prone to condensation, our aluminium alternatives offer modern A-rated energy efficiency. Featuring advanced polyamide thermal breaks, they keep your home warm and lower your heating bills. - Customisable Finishes
Your home is unique, and your doors should be too. Choose from a wide range of durable powder-coated finishes, including the classic “Traffic Black,” Anthracite Grey, or White. Dual-colour options are also available. - Versatile Configurations
Whether you need a single rear door, stylish French doors, or internal room dividers with side panels, we can tailor the layout to your space. Create a seamless, elegant connection between your indoor and outdoor living areas. - Accredited Security & Quality
We partner with industry leaders Sheerline and Smart Systems (Alitherm Heritage). Both systems are fully accredited, meeting rigorous PAS 24 security standards and Building Regulations, giving you complete peace of mind.
Internal room divider
Transform your interior space with our steel-look room dividers. Unlike solid walls that block light, these glazed partitions create distinct zones—perfect for separating a home office or dining area—while maintaining a bright, open-plan feel.
You get the acoustic privacy you need without sacrificing the flow of natural light. Available with or without a bottom threshold, they offer a seamless transition between rooms. It is the ultimate modern upgrade for open-plan living, adding a touch of industrial chic to any hallway, kitchen, or living space.
Crittall® vs Smart Heritage Aluminium
External Heritage Doors
Connect your home to your garden with our heritage patio doors. Designed to replace old, drafty rear entrances, these doors combine the slim, elegant sightlines of traditional steel with 21st-century performance.
They feature high-security multi-point locking mechanisms and A-rated double glazing to keep the weather out and the warmth in. Whether you choose French doors with side panels or a single glazed door, the thermally broken aluminium frames ensure you never have to choose between beautiful aesthetics and modern energy efficiency.
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Sheerline vs. Smart Systems
At KJM, we offer the two market-leading systems: Sheerline Prestige and Smart Alitherm Heritage. While both offer stunning steel-look aesthetics, they have distinct advantages.
The Smart Alitherm is the industry standard for replicating Art Deco renovation projects with ultra-slim profiles. The Sheerline Prestige offers an innovative ‘beadless’ design for enhanced security and slightly superior U-values. Our team will guide you through the technical differences to ensure you get the perfect match for your property’s age, style, and thermal requirements.
Why Aluminium Beats Steel
Why choose aluminium over original steel? Put simply: performance and price. Traditional steel windows are heavy, expensive, and notoriously poor at retaining heat.
Our modern aluminium alternatives offer the same iconic ‘grid’ look but are significantly lighter, making them easier to operate daily. They are also thermally broken, meaning no condensation issues in winter. You get the prestige look of industrial glazing for a fraction of the cost, with virtually zero maintenance required beyond a simple wipe down.
Heritage Style Doors Prices
At KJM Group, we understand that price is an important consideration when choosing new doors for your home, and every property and every project has different requirements. As each project is unique, the cost of our heritage doors can vary depending on factors such as size, configuration and additional features. We offer competitive prices for our high-quality products, ensuring that you get the best value for your investment. To get an accurate quote for your specific project requirements, we recommend contacting our friendly team of experts who will be happy to assist you.
You can also use our online quoting tool to get a hassle free quote for your heritage doors reports.
Here at KJM Group, we are dedicated to providing you with the highest quality products and exceptional customer service. As a trusted supplier in Hampshire, London and the surrounding areas, we are here to help you enhance the aesthetics and functionality of your property with our range of heritage doors. Contact us today or visit our website to explore our full range of products and start your journey towards a more beautiful home.
Frequently Asked Questions
Are these doors made of real steel?
No, they are manufactured from high-grade aluminium. While they perfectly replicate the slim, industrial sightlines of traditional steel windows, aluminium is significantly lighter, more affordable, and naturally resistant to rust. Crucially, modern aluminium systems (like Smart Alitherm) feature a thermal break, meaning they don’t suffer from the cold bridging and condensation issues often associated with solid steel frames.
Can I use these doors internally and externally?
Yes, our heritage range is designed for both.
For External Use: We install fully weather-sealed, double-glazed units with high-performance thermal breaks to keep your home warm and secure (meeting PAS 24 standards).
For Internal Use: We can install them as room dividers or partitions. In these cases, we often use a lower threshold (floor track) to create a seamless transition between rooms without a trip hazard.
Can I choose the pattern of the grid bars?
Absolutely. The “grid” effect is created using astragal bars (glazing bars) that are bonded to the glass. Because these are applied during manufacturing, you can specify exactly how many horizontal or vertical bars you want. Whether you want the busy “New York loft” look with many small squares, or a minimalist aesthetic with just horizontal bars, the design is entirely bespoke to your taste.
How energy efficient are steel-look aluminium doors?
Very efficient. Unlike original single-glazed steel windows which are notorious for letting heat escape, our aluminium alternatives are ‘A-rated’ for thermal efficiency. They utilise polyamide thermal breaks within the frame and argon-filled double glazing units. This ensures they meet or exceed current Building Regulations, keeping your heating bills down while maintaining that classic vintage style.
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