Modern replacement windows do not have to compromise the appearance of a traditional property. Our heritage aluminium systems feature slim profiles and narrow sightlines designed to recreate the distinctive appearance of traditional steel and Crittall-style windows while delivering the practical benefits of modern glazing technology. Choose from a range of configurations, colours, glazing options and hardware to create a solution that complements your property’s architecture.
✔ Preserve the Historic Charm: Our heritage windows are specially designed to maintain the architectural charm of listed properties while meeting building regulations. It is an ideal choice for listed building renovation and large-scale refurbishment projects. Also popular among modern homeowners.
✔ Improved Security: Heritage Double Windows has passed the PAS 24:2016 security test, which provides enhanced security compared to traditional single-glazed timber windows.
✔ Long lifespan: Aluminium windows are superior for protecting from rust or rot for decades. Window frames are known for their durability and can last indefinitely. Traditional timber, steel, or uPVC heritage windows need replacement within 30-35 years.
✔ Energy Efficient: Smart Alitherm Heritage Door features polyamide thermal break technology, which creates a barrier between outside cold air and inside warm air. The reduced thermal transmittance improves the overall U-value, resulting in savings on energy bills.
✔ Timeless Aesthetic: Heritage Doors feature super slim sightlines along with optional horizontal modules that help create Crittall inspired industrial doors. They can also be paired with Heritage and Art Deco hardware.
✔ Maintenance-Free:: Powder-Coated Aluminium Doors are rigorously weather tested (BS 6375 Part 1:2009). They do not fade, deteriorate, or rust in harsh environments. This means no repainting or varnishing is needed, reducing the risk of needing replacements.
✔ Double Glazing: Heritage double-glazed windows offer better insulation compared to single-glazed heritage timber windows.
✔ Triple Glazing: Smart Alitherm Heritage Windows supports 28, 32, and 36mm triple glazing units, which align with the latest building regulations. Triple-glazed heritage windows provide better sound insulation for quieter homes.
✔ Various Glass Options: You can opt for Low-E glass, solar control glass, toughened glass, and laminated glass to meet var
✔ Supply-Only Aluminium Doors & Windows – Available for trade professionals, builders, and contractors.
✔ Full Installation Service – Our expert fitters ensure perfectly installed aluminium glazing solutions.
Upgrade your home or commercial property with bespoke aluminium windows and doors in London and surrounding areas. Our expert team designs, manufactures, and installs every system to the highest standards — combining style, performance, and energy efficiency.
Contact us today for a free, no-obligation quote and to discuss aluminium windows and doors prices tailored to your project and budget.
Call us now: 0203-576-2142 or Request a free quote online
Durajoin has been the customer’s choice for its quality and customization.
We put your needs first and provide bespoke solutions to cater for your requirements.
Our aluminium windows and doors feature advanced thermal break systems to reduce heat loss and improve overall energy efficiency. By combining high-performance glazing with precision engineering, we help London homes and commercial properties maintain comfortable indoor temperatures and save on energy costs.
Maximising natural light and airflow is key to comfortable, inviting spaces. We guide you in selecting the right aluminium window and door styles to let in daylight and ensure proper ventilation — all fully compliant with UK building regulations and safety standards.
Quality aluminium windows and doors should be accessible without compromising performance. Durajoin works closely with you to deliver durable, well-suited solutions that fit your budget, offering honest advice and transparent pricing every step of the way.
Windows and doors are essential architectural features. Our bespoke aluminium windows and doors are designed to complement your property’s elevation, interior style, and overall aesthetics, ensuring your home or commercial space looks as good as it performs.
Durajoin is an ethically run window fabrication company to cater needs of the Fenestration Industry. Our goal is to provide high quality, bespoke solutions under one roof to our clients – may it be windows, doors, railings, gates or Juliet balconies.
We offer work in different materials, primarily with uPVC, aluminium, timber, and metal. Durajoin has a team of professionals working hard to support you with answering your queries and guiding you with a choice of top quality products.
At Durajoin Aluminium Windows and Doors, we design, manufacture, and install high-quality aluminium windows, bifold doors, sliding doors, entrance doors, conservatories, and roof lights across London and surrounding areas. Whether you’re a homeowner looking for modern aesthetics, a commercial developer needing high-performance glazing, or a trade professional seeking supply-only aluminium doors and windows, we have the perfect solutions.
🔹 Over 20 years of experience in the industry
🔹 Premium quality aluminium doors and windows built to British Standards
🔹 Competitive pricing with trade and bulk discounts
🔹 Fast lead times – manufacturing & delivery within 7 days
🔹 Bespoke made-to-measure designs
With our expert team and commitment to exceptional craftsmanship, we ensure that every product offers unmatched durability, security, and thermal performance.
Smart System Designed and developed the Alitherm Heritage windows and doors range to meet the needs of refurbishment of period properties (listed buildings) and renewal projects, especially in sensitive planning areas. These windows and patio doors are perfect for Victorian and Art Deco builds, having already been successfully used in many renovation projects across the UK.
Alitherm Heritage provides a modern replacement for traditional timber windows, making it suitable for projects where planning regulations require sympathetic materials, including listed buildings. The architectural windows system already been approved for project in Islington, Camden, Tower Hamlets, Watford Borough Council, Essex County Council, and Cadw, the Welsh Government’s service for historic environments service.
Both Alitherm Heritage door and window ranges have super slim profiles and sight lines that reflect the look of traditional crittall steel doors and windows. They also provide excellent thermal performance, achieving a ‘B’ Energy Rating. With slim, thermally-broken profiles, Alitherm Heritage windows come in many configuration, including fixed-pane, sash, top-hung, side-hung casement, pivot, and tilt-and-turn.
Alitherm Heritage doors work well for both single and exterior french door applications and are available in various sizes. They come with a secure multi-point lock and face-mounted finger-thrown locking bolts. Both the window and door systems have a U-Value of 1.5 W/m²K when installed with the right double glazed or triple glazed unit and are available in single or dual colour powder-coated finishes.
Durajoin offers a wide range of aluminium windows and doors including casement, sliding, sash, tilt & turn, bifold doors, sliding patio doors, entrance doors, French doors, and more. We design and manufacture each system to your specifications, ensuring premium quality, durability, and energy efficiency for homes and commercial properties across London.
Yes! Durajoin is one of the leading aluminium window and door suppliers in London. We cater to homeowners, builders, developers, and trade professionals, providing bespoke solutions with professional supply and installation services.
✔ Supply-Only Orders: 5-7 days
✔ Supply & Installation: 7-14 days (depending on project size)
Yes! All our aluminium windows come with A-rated double glazing for superior thermal insulation and noise reduction.
The most requested designs include:
✔ Slimline Casement Windows – Modern, energy-efficient, and customisable.
✔ Heritage Windows – Classic aesthetics for period homes.
✔ Sliding Windows – Space-saving and ideal for apartments and offices.
✔ Sash Windows – Traditional style with modern functionality.
Our aluminium doors are fitted with multi-point locking systems, impact-resistant glass, and reinforced frames, ensuring high security for homes and businesses.
Yes, we offer flexible financing plans to help you spread the cost of your aluminium window and door installation.
📞 Speak to an Expert Today: +44 203 576 2142
