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Commercial Double Glazing


Commercial double glazing offers projects increased acoustics or greater performance from their glass. Retrofitting of double glazed units or IGUs (insulated glass units) can significantly decrease heat gain or heat loss in a building - potentially reducing mechanical running costs associated with heating or cooling a building.

Reglazing can also be a safety requirement for buildings that have glass that does not meet current human impact and barrier loading standards or is susceptible to spontaneous breakage (often from Nickle Sulphide Inclusions).

If you are unsure about the safety of your glass - call us to arrange an inspection.

Thermosash, in conjunction with its commercial glazing subsidiaries, Woods Glass NZ Ltd (Auckland, Wellington & Christchurch) have the expertise to offer specific mechanical performance glass design solutions and have all the required access equipment to undertake your commercial glazing requirements.

Product Features

  • Manages acoustics between spaces

  • Reduces heat gain

  • Reduces heat loss
  • Improves glass safety for occupants
  • Can be retrofitted  to most existing glazing systems


Glass specifications can vary considerably depending on glass colour, architectural design and required mechanical performance requirements - call us to discuss your needs.

Performance / Testing

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

See Also
Glass under materials