Transform your property with bespoke heritage aluminium windows and doors engineered for period restorations, modern extensions, and warehouse conversions. Combining ultra-slim sightlines, classic astragal glazing bars, and advanced thermal breaks, we deliver the timeless elegance of traditional metal glazing with modern energy efficiency and security.
Traditional steel frames are notoriously prone to condensation, rust, and significant heat loss. Our bespoke heritage aluminium windows and doors solve these structural flaws. We manufacture our profiles from architectural-grade aluminium with integrated polyamide thermal breaks, giving you the authentic aesthetic of slim, multi-pane heritage glazing without sacrificing warmth, durability, or peace of mind.
Engineered with ultra-slim sightlines and stepped steel-look frames, our bespoke heritage aluminium windows deliver classic industrial character with modern Part L energy efficiency, advanced weather sealing, and PAS 24 multi-point security. View Our Heritage Window Projects →
Custom black aluminium heritage doors engineered with ultra-slim sightlines, horizontal astragal bars, and an integrated lock box that deliver classic industrial character with high-performance double glazing, advanced thermal insulation, and multi-point security. View our Heritage Door Projects →
Bespoke heritage aluminium casement windows engineered for period homes, townhouses, and extensions across Greater London, combining iconic steel-look sightlines with modern energy efficiency. Explore our full range of aluminium casement windows.
Bring classic Art Deco character to your garden opening with bespoke heritage aluminium French doors engineered for rear kitchen extensions and period homes across London, pairing authentic steel-look sightlines with modern double glazing. Explore our complete selection of standard aluminium French doors.
Divide living zones without compromising natural light using bespoke Crittall-style internal glass double doors. Engineered with ultra-slim aluminium framing, our screens bring open-plan industrial elegance and acoustic zoning to modern London homes. Explore our matching aluminium doors collections.
Restoring period character should never come at the expense of energy efficiency, security, or durability. We combine traditional steel aesthetics with cutting-edge architectural aluminium engineering across London and Greater London.
From initial architectural design and precision laser surveys to final on-site installation, our dedicated fitting specialists manage every stage of your project directly across London and Greater London. We avoid subcontracting, guaranteeing that every heritage casement, French door, and internal partition fits flush, operates smoothly, and achieves certified, airtight weatherproofing.
Traditional steel frames are notoriously prone to cold-bridging, condensation, and progressive rust that demands ongoing repainting. Durajoin Aluminium Windows and Doors heritage systems replicate those iconic, ultra-slim stepped sightlines using durable, high-grade extruded aluminium finished in marine-grade polyester powder coating (standard in Matt Black RAL 9005 or Anthracite Grey RAL 7016) that never peels, corrodes, or needs repainting.
Preserve your home’s period character while drastically reducing heat loss. Engineered with advanced polyamide thermal break technology, warm-edge spacers, and 28mm argon-filled low-E heritage double glazing, our systems achieve low U-values that comfortably exceed current UK Part L Building Regulations for both historic replacements and contemporary extensions.
Authentic period aesthetics do not mean compromising on home protection. Our heritage doors and windows feature heavy-duty multi-point shootbolt locking systems, high-tensile anti-tamper hinges, 3-star security euro cylinders, and internally beaded safety glazing certified to PAS 24 and Secured by Design standards to guard against forced entry.
At Durajoin Aluminium Windows and Doors, we combine architectural craftsmanship with precision engineering to deliver authentic steel-look profiles across London and Greater London. Whether you are restoring a Victorian townhouse, modernising a 1930s semi, or designing a contemporary glazed extension, our in-house team provides a complete, survey-to-installation service built around acoustic privacy, PAS 24 security, and Part L thermal compliance.
As a specialist supplier to homeowners, developers, and architects across London, Durajoin delivers custom aluminium heritage windows designed to replace outdated steel or timber frames without compromising period authenticity. Historic properties throughout Greater London demand meticulous attention to sightlines, glass proportions, and planning considerations:
Authentic Period Detailing: Features ultra-slim stepped contours, deep bottom rails, and authentic interior and exterior astragal bars with internal duplex spacers that replicate original metal fenestration.
Modern Thermal Performance: Incorporates multi-chambered polyamide thermal breaks and 28mm low-E argon-filled double glazing that easily exceed Part L Building Regulations with low U-values.
Marine-Grade Powder Coating: Resists coastal corrosion, peeling, and UV fading with standard finishes in Matt Black (RAL 9005), Anthracite Grey (RAL 7016), or bespoke RAL dual-colour combinations that never require repainting.
Full In-House Management: Handled directly by our certified fitting teams from initial millimeter-precise digital laser surveys and drawings through to final FENSA-certified installation.
Planning & Restoration Advice: Upgrading a period property or home under restrictions? We work closely with homeowners to specify heritage windows conservation area projects, preserving historic streetscapes while satisfying modern building control efficiency targets.
Durajoin supplies and installs bespoke heritage aluminium doors that bring classic industrial aesthetics to residential extensions, garden terraces, and interior living zones across London. Engineered with structural rigidity, effortless everyday operation, and full weatherproofing, our door packages transform your space while safeguarding your property:
Comprehensive Product Configurations: Available as classic French double doors with matching glazed sidelights, panoramic multi-leaf bifolds, slimline sliding patio systems, and interior Crittall-style room dividers.
Approved Security System: Built with multi-point shootbolt locking mechanisms, anti-tamper hinges, high-security euro cylinders, and toughened safety glass fully compliant with PAS 24 and Secured by Design standards.
Integrated Industrial Hardware: Features authentic horizontal glazing bars, stepped steel-look profiles, signature integrated lock boxes, and classic heritage lever handles.
Seamless Accessibility & Acoustic Comfort: Offers ultra-low flush floor thresholds for barrier-free terrace or kitchen transitions, alongside dedicated acoustic laminates for peaceful interior zoning.
Achieving flawless thermal performance and effortless operation with slimline heritage glazing demands specialist installation. A fraction of a millimetre misalignment can compromise airtightness, weather seals, and smooth locking. We manage the entire project lifecycle directly with our dedicated in-house team—never third-party subcontractors.
Our technical surveyors record exact structural opening dimensions, inspect perimeter levels, and calculate internal-to-external threshold heights for flush drainage.
Your frames and glass units are engineered to bespoke millimetre tolerances and finished with marine-grade polyester powder coating in classic Matt Black (RAL 9005), Anthracite Grey (RAL 7016), or custom heritage shades.
Our certified fitting teams install the frames, toe-and-heel the glass units, calibrate multi-point shootbolt locking mechanisms, and apply airtight perimeter seals.
Every completed project is protected by an insurance-backed 10-year structural guarantee and registered with FENSA compliance certification.
Active projects completed across West London (Ruislip, Hillingdon, Ealing, Chiswick, Richmond), North & East London (Leyton, Hackney, Islington, Walthamstow), and South London (Wimbledon, Wandsworth, Dulwich).
Upgrade your home with London’s specialist installers of architectural heritage windows and doors. Contact our technical sales team for expert advice, design assistance, and a fixed, no-obligation quotation.
Call us now: 0203-576-2142 or Request a free quote online
Every heritage aluminium profile combines period-accurate aesthetics with modern building performance, meeting strict UK standards for insulation and structural security.
High strength-to-weight ratio; guaranteed not to rot, warp, twist, or rust over decades of exposure.
Achieves low U-values compliant with Part L Building Regulations, retaining heat during winter months.
Breaks cold-bridging across the metal profile, eliminating interior window condensation and dampness.
Features high-tensile shootbolts and anti-tamper hinges engineered to withstand forced entry.
UV-stable, scratch-resistant coating available in Matt Black, Anthracite, and custom RAL colours without repainting.
Replicates authentic heritage metal glazing bars while maximizing clear glass area and natural indoor lighting.
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.
🔹 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. View Our Google Map Location →
Installing heritage windows conservation area settings depends on your local planning authority’s specific restrictions and whether Article 4 directions apply to your street. Because our aluminium profiles replicate the sightlines, glazing bars, and proportions of original steel and period timber frames, they are frequently approved as suitable replacements. We supply full technical CAD drawings and profile sections to support your planning or conservation application.
Original single-glazed metal frames conduct cold directly into the house, causing drafts and pooling condensation. Our modern systems incorporate high-performance heritage double glazing with low-emissivity glass coatings, warm-edge spacer bars, and argon gas cavity infill. This keeps the interior pane warm and significantly cuts home heating bills.
Our heritage aluminium doors supply and fit service covers all Greater London postcodes as well as adjacent areas within the M25 perimeter. Whether you need single [heritage french doors] for a terrace renovation or a full package of [heritage windows and doors] for an architectural new build, our mobile surveying teams handle projects across North, South, East, and West London.
While standard bifold doors use plain, unadorned glass panes with wider outer stiles, heritage bifold doors feature applied or integral horizontal astragal bars, decorative lock-boxes, and slim stepped frame profiles to deliver an authentic industrial aesthetic without sacrificing smooth multi-leaf folding operation.
Astragal bars (glazing bars) are authentic aluminium grid profiles applied to both the internal and external faces of the double-glazed unit, paired with integral duplex spacer bars inside the glass cavity. This replicates the visual depth and shadow lines of individual historic glass panes while preserving the thermal integrity, airtightness, and structural strength of a modern, sealed double-glazed unit.
Despite their minimalist profile, our heritage French, patio, and bifold doors undergo rigorous testing to achieve PAS 24 security certification and comply with police-approved Secured by Design standards. The frames house heavy-duty multipoint shootbolt locking mechanisms, anti-tamper hinges, high-security 3-star euro cylinders, and internally beaded glass that prevents external pane removal.
Yes, we supply and fit internal heritage glass screens and French double doors. Because they serve as interior acoustic partitions rather than external weather barriers, they can be configured with ultra-low flush thresholds or top-hung concealed tracks with no floor obstruction, ensuring uninterrupted hardwood or tiled flooring between your hallway, home office, and kitchen.
