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Structural Glass Canopy Systems


Glass canopies come in two primary design philosophies - structurally glazed (as outlined below) and mechanically engaged.

Structural Glass Canopies

This design style of overhead glazing generally employs spider fittings or engineered fittings that fix back to a primary structure. The engineered fittings require a drilled hole in specific engineered laminated toughened glass that suspends the glass locally at each fixing point. The glass panes are generally clear silicone butt jointed to provide the appearance of a monolithic sheet of glass.

Due to potential exposure to high wind, seismic, snow and live loads etc, it is neccesary for these types of systems to be specifically designed.

Product Features

  • Fixing mechanism can be proprietary or bespoke.

  • Almost any type of glass can be incorporated, including ceramic fritting to provide an element of solar shading corporate motif.


We recommend using Masterspec 4251T Commercial Windows or Masterspec 4614 Specialty Glazing when specifying this glass type.

Surface Finishing 

We recommend that all exposed exterior fixings such as spider fittings are stainless steel rated to 316.

Performance / Testing

  • AS/NZS1170 (Structural Design Actions)
  • NZS4223 (Glazing in Buildings)
  • NZS/AS4284:2008 (Water / Air Pressure/ Air Leakage - Meets and exceeds minimum requirements)

Maximum Spanning Ability

Glass size and primary structure support is your only limitation. We can source your specific glass requirements to meet your projects needs.

Thermosash specifically engineers the best suite option for your project taking into consideration span, structural system, load imposed by glass thickness, wind & snow loading. The spanning ability will vary depending on the above. 

Thermosash Suites are recognized as having the largest spanning systems on the market due to our specific engineering capability and the customised nature of the work we complete.


The standard warranty is 5 years from the date of practical completion for these products. This covers workmanship and weather tightness, providing the subcontract includes fabrication, installation and glazing of all components. 

Downloads Available 

Please go to our resource section or click below for the relevant downloads: 
Proprietary Spider Fittings
Masterspec 4251TS Commercial Windows

Novotel AIAL (Auckland Airport)

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