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Specialist Glazing Solutions

Architectural Glazing

Custom-made architectural glazing solutions for architects and specifiers. From roof lanterns and flat rooflights to structural glass extensions and balustrades — engineered for premium residential and commercial projects across Surrey and London.

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Home / Architectural Glazing

Roof glazing skylight for natural light and energy efficiency.

Structural Glass

Custom-made structural glazing — oriel bays, balustrades, wrap-around glazing, glass extensions and linkages

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Bright living room with large roof lantern and glass sliding doors.

Roof Lanterns

Custom-made aluminium roof lanterns for maximum natural light and thermal performance

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Aluminium façade system with large glass panels on a contemporary house.

Flat Rooflights

Thermally broken aluminium flat roof windows for contemporary extensions and new builds

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Walk-on Glass Rooflights

Anti-slip walk-on glass panels for floor-level glazing and basement light wells

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Aluminium Conservatories

Contemporary and traditional aluminium conservatories with superior thermal performance

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Lean-To Roofs

Aluminium lean-to roofs for covered patios, outdoor dining and carports

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Aluminium louvered pergola installed in a UK garden setting

Aluminium Pergolas

Premium louvered aluminium pergolas with motorised roofs for year-round outdoor living

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Specialist Architectural Glazing for Premium Projects

Direct Trade Windows manufactures and installs specialist architectural glazing for architects, specifiers and discerning homeowners across Surrey and London. From bespoke roof lanterns and flat rooflights to structural glass box extensions, every product is engineered for thermal performance, security and aesthetic precision.

Our architectural glazing range uses premium aluminium profiles from Cortizo and Smart Systems, delivering slim sightlines without compromising structural integrity. Whether you are specifying overhead glazing for a contemporary extension, a frameless glass box for a heritage property, or thermally broken rooflights for a Passivhaus project, we manufacture in-house for full quality control.

Why Architects Specify Our Architectural Glazing

  • In-house manufacturing with full quality control
  • Cortizo and Smart Systems aluminium profiles
  • Thermally broken frames meeting Document L 2022
  • Bespoke sizes and configurations
  • Full specification support and technical drawings
  • Installation across Surrey, London and the South East
Aluminium façade system with large glass panels on a contemporary house.

Technical Specifications

Technical Specifications

Architectural Glazing Performance Standards

  • Roof lanterns: Smart Systems Atlas — spanning up to 6m x 3m without intermediate supports, U-values from 1.2 W/m2K
  • Flat rooflights: Fixed and electrically opening options, U-values from 1.0 W/m2K with triple glazing
  • Structural glass: Minimal framing systems using 12mm-21.5mm laminated toughened glass panels
  • Glass balustrades: Fully compliant with BS 6180:2011, using 15mm or 21.5mm toughened laminated glass
  • Weather performance: All rooflight and lantern systems tested to BS EN 12208 (water tightness) and BS EN 12210 (wind resistance)
  • Drainage: Concealed internal drainage channels on all roof-mounted glazing

Glass Options for Architectural Glazing Products

Glass specification varies by application. We work with your project requirements to select the optimal glazing — for thermal performance, solar control, acoustic insulation or structural loading. Speak to our specification team for glazing recommendations tailored to your architectural glazing products.

Colours & Finishes

Colours & Finishes

Frame & Finish Options

All aluminium framework for architectural glazing products is powder coated to marine-grade standards with a minimum 25-year colour guarantee.

  • Anthracite Grey (RAL 7016) — The most popular contemporary choice for architectural glazing
  • Jet Black (RAL 9005) — Bold, dramatic finish for contemporary designs
  • Pure White (RAL 9010) — Clean, classic finish for traditional and modern properties
  • Any RAL Colour — Full RAL Classic palette available to specification
  • Dual Colour — Different internal and external frame colours for all architectural glazing products
  • Anodised-Effect — Metallic bronze, silver and champagne anodised-look coatings

Powder coating is applied in-house to marine-grade standards, with a minimum 25-year colour guarantee and resistance to fading, chalking and corrosion.

Cortizo logo FENSA logo BFRC logo Accreditation logo for Direct Trade Windows company. Constructionline Gold Member badge for trusted building industry standards. Close-up of a window with a focus on the frame and glass. Aluminium window with sleek design and modern finish.