Anthracite Grey (RAL 7016) Window and Door Installation
Anthracite Grey (RAL 7016) windows and doors deliver a sleek, contemporary architectural aesthetic that contrasts crisply with traditional red brickwork, London stock brick, white render, and contemporary weatherboarding. Window Fitters Ltd supplies and installs Anthracite Grey casements, bifolds, sliding doors, and entrance doors for contemporary home extensions, Victorian renovations, and architectural new-build properties across Greater London, Surrey, and the South East via Croydon HQ travel-time tiers (<15m local at £540/day, 15-45m extended at £580/day, >45m outer Surrey with half-day minimum).
Available in both marine-grade polyester powder-coated aluminium and durable foiled uPVC, our Anthracite Grey glazing systems are manufactured to exact opening tolerances, engineered with multi-chambered thermal breaks, and fully compliant with Approved Document L energy standards and Approved Document Q security regulations.
Aluminium vs Foiled uPVC in Anthracite Grey
We supply Anthracite Grey windows in two high-performance materials:
| Specification Metric | Powder-Coated Aluminium (RAL 7016) | Foiled uPVC (Anthracite Grey) |
|---|---|---|
| Surface Finish Texture | Smooth architectural matte (30% gloss) or textured Qualicoat finish | Authentic 3D woodgrain textured foil or smooth matte acrylic foil |
| Frame Sightline Width | Ultra-slim 58 mm to 68 mm sightlines | Standard 70 mm to 80 mm sculptured or flush sash sightlines |
| Thermal Transmittance (Uw) | 1.3 to 1.4 W/m²K (polyamide thermal break) | 1.2 to 1.3 W/m²K (multi-chambered Class A profile) |
| Thermal Expansion Rate | 24 x 10^-6 / K (accommodated via 15 mm expansion deductions) | 60 x 10^-6 / K (accommodated via steel reinforcement & slotted fixings) |
| Expected Lifespan | 40 to 45+ years (highly resistant to UV and scratching) | 25 to 35+ years (heat-bonded UV-stable multi-layer foil) |
15 mm Expansion Deductions
Dark profiles absorb solar heat, expanding significantly more than white frames. Surveyors deduct 15 mm overall on wide spans to prevent buckling under Approved Document A.
Dual-Colour Options
Anthracite Grey exterior to match brickwork paired with clean Traffic White interior frames to keep living spaces bright and neutral.
Full-House Matched Suites
Coordinating casements, bifold doors, sliding screens, composite front doors, and aluminium rooflights in exact RAL 7016 matching. Explore bifold doors and composite doors.
RAL 7016 Surface Finishes: Powder Coating vs Architectural Foils
Achieving a durable, long-lasting Anthracite Grey (RAL 7016) finish depends on the underlying framing substrate and how the colour layer is applied:
Qualicoat Polyester Powder Coating (Aluminium)
Extruded aluminium profiles undergo multi-stage pre-treatment before electrostatically applying dry polyester powder, cured at 200°C. This forms a continuous 60 to 80-micron architectural barrier meeting Qualicoat Class 1 and Class 2 marine specifications. The resulting surface resists scratches, acid rain, and UV fading for over 40 years. Explore our aluminium window profiles.
Heat-Reflective Multi-Layer Foils (uPVC)
For uPVC frames, multi-layer acrylic foils (such as Renolit EXOFOL PX or Continental Cool Colors) are permanently bonded using reactive hot-melt polyurethanes. The foil integrates infrared-reflective pigmentation that reflects solar heat radiation, keeping internal profile chambers up to 15°C cooler than traditional dark laminates. View our uPVC window systems.
Thermal Expansion Engineering and BS 8213-4 Fixing Tolerances
Dark finishes absorb up to 85 percent of solar radiant energy. On south and south-west facing elevations across London and Surrey, surface temperatures on Anthracite Grey frames can exceed 65°C during summer months. In contrast, standard white profiles rarely exceed 40°C.
To prevent frame distortion, sash binding, or perimeter sealant failure, Window Fitters Ltd installation teams adhere strictly to British Standard BS 8213-4 tolerances:
- Increased Perimeter Expansion Gaps: While white uPVC requires a standard 10 mm overall expansion deduction (5 mm per side), Anthracite Grey frames require a 15 mm overall deduction (7.5 mm per side) to accommodate thermal movement.
- Full Internal Steel Reinforcement: Dark uPVC outer frames and transoms are reinforced with heavy-duty galvanized steel channel sections along their full length to resist thermal bowing.
- Slotted Fixing Hole Alignment: Mechanical direct frame fixings are installed through slotted pilot holes, allowing the outer frame to expand horizontally and vertically without transferring stress into the masonry aperture.
- High-Elasticity Neutral-Cure Sealant: Perimeter joints are filled with flexible low-expansion polyurethane foam and sealed with low-modulus neutral-cure silicone accommodating +/- 25 percent joint movement under ISO 11600.
Explore coordinating architectural glazing: browse our external doors directory for colour-matched entrance and patio doors, follow our window installation and door installation workflows, consult qualified window fitters and installers, review our complete installation services directory, and evaluate pricing in our installation cost guide.
Frequently Asked Questions About Anthracite Grey Windows
Common questions regarding Anthracite Grey (RAL 7016) thermal expansion tolerances, dual-colour options, and powder coating durability.
Why do Anthracite Grey frames require larger expansion gaps than white frames? +
Dark Anthracite Grey (RAL 7016) profiles absorb significantly more solar radiant heat than white profiles, reaching surface temperatures up to 70°C. Surveyors deduct 15 mm overall on wide spans to allow for linear thermal expansion without frame distortion.
Can you get Anthracite Grey outside with white inside on aluminium and uPVC? +
Yes. Dual-colour configurations are standard. Dark Anthracite Grey on the exterior matches modern brickwork and facade glazing, while clean Traffic White on the interior keeps living spaces bright and neutral.
Does Anthracite Grey powder coating fade or chalk over time? +
Our aluminium windows are finished with Qualicoat Class 1 and Class 2 marine-grade polyester powder coating that provides outstanding UV resistance, colour stability, and scratch resistance for 25+ years.
Can I get matching Anthracite Grey composite doors, bifolds, and rooflights? +
Yes. We provide complete full-house suites with exact RAL 7016 colour-matching across casement windows, flush sashes, bifold doors, sliding patio screens, composite front doors, and aluminium roof lanterns.
Author & Technical Reviewer: Marian Gheorghe
Head Installer & CEO, Window Fitters Ltd
Marian Gheorghe is the Active Director and Team Leader Installer at Window Fitters Ltd. With over 15 years of hands-on experience, he oversees technical safety and UK Building Regulations compliance for all residential and commercial glazing contracts.
Ready to discuss your project?
Window Fitters Ltd provides window and door installations across London and Surrey for residential, trade, and commercial projects.
Message our team on WhatsApp or send an enquiry with your drawings, photos, or measurements to receive a free, no-obligation quote.
Share this page on social media, whatsapp, print it or email to anyone:
Verified Google & MyBuilder Reviews
"Stunning Sash Windows in Croydon"
"Marian and his team replaced our old Victorian sash windows. They were clean, fast, and the double glazing has completely blocked out the street noise. Highly recommended!"
"Excellent Bifold Doors in Bromley"
"Installed beautiful grey aluminium bifold doors for our new kitchen extension. Smooth gliding mechanism and great insulation. The best quote we got in Kent."
"Perfect Front Door Upgrade in Sutton"
"Very happy with our new composite door installation. Excellent lock security and high-quality GRP slab finish. Fast half-day fitting and no mess left behind."