Steel Glass Facades

Also known as curtain wall, steel glass facade is a type of building facade system that utilises steel framing to support glass or metal infill panels. A steel glass facade consists of non-structural frames, glass or infill panels, and fasteners and anchors to secure the steel frame to the building structure. 

While commonly seen in commercial and high-rise buildings, steel glass facade can be utilised in certain circumstances where their unique combination of strength, durability, and aesthetic appeal align with the preferences and requirements of homeowners and architects.


  • Thermally broken profiles as standard 

Size Limitation

  • Standard sash sizes are up to 1.5m at height and 900mm at width. The sash may weigh up to 50kg. 
  • Large size sash sizes are up to 2m at height and 2mm at width. The sash may weigh up to 130kg.

Integrating Opening Elements

A wide range of opening elements can be integrated to steel glass facades. The most commonly used ones are;

  • Top-hung or tilt-turn windows windows, 
  • Single-leaf or double-leaf communal entrance doors,
  • Sliding or bifold doors.

Colours and Finishes

Typically, steel glass facades offer a variety of color and finish choices, including:

  • Powder coated RAL colour,
  • Textured metallic finishes,
  • Marine grade powder coated for for use in marine and coastal environments.

Glazing Options

  • Steel facades can be glazed with double or triple glass units. 
  • Typical double glass option for a steel facade: Ug-value of 1.0 W/m2K, 28 mm (6/16/6), Toughened glass, Argon filled cavity, and warm edge spacers.
  • Triple glass unit: To achieve better thermal performance (Ug-value of 0.5 or 0.6 W/m2K). 
  • Toughened safety glass: Glass units are built with toughened glass
  • Laminated glass: One pane of glass unit can be built with laminated glass for additional security, safety or noise reduction.

Thermal Performance

  • External steel glass facades are usually constructed with thermally-broken frames to achieve higher thermal performance. Higher thermal performance, indicated by lower Uw-value, is achieved with lower U-values of frame (Uf), glass (Ug), and spacer bars (PSIG). 
  • For replacement in existing residential buildings, steel facades must achieve a Uw-value of 1.4 W/m2K or lower to comply with Part L of Building Regulations. ( A minimum Window Energy Rating of Band B is also acceptable for compliance.)
  • Steel facades in new residential buildings must have a Uw-value of 1.2 W/m2K (the maximum allowed value is 1.6 W/m2K for SAP calculation) to comply with Part L of Building Regulations.

Safety & Security Options

  • Security options include burglar resistance classes of RC2, RC3 or PAS24 are available.
  • Laminated glass is chosen for the steel glass facades requiring extra security.
  • For cases like full height glazing where containment is needed, laminated glass is used for preventing fall through.

Product range

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Building Regulations for Glass Walls

All windows installed in buildings must comply with the Building Regulations and meet the specified requirements:

  • Windows to be installed in new or existing buildings must meet energy efficiency requirements contained in Approved Document L.
  • In new residential buildings, easily accessible windows are required to meet the security requirements specified in Approved Document Q.
  • Windows must comply with ventilation requirements specified in Approved Document F.
  • Glazing in critical locations must meet the safety requirements specified in Approved Document K.