Heat-treated Glass

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Tempered Glass

Heat-treated glass is heated in an oven at a high temperature and then cooled rapidly by blowing air onto both surfaces. The cooling process locks the glass surfaces in a state of compression while the core is in compensating tension. The compression of the tempered glass surface is greater than 10,000 psi (68.9 MPa), therefore meeting the ASTM C1048 standard.


  • Fully tempered glass is about four times stronger than annealed (non-tempered) glass of the same thickness.
  • Glass breaks into small, dull fragments ensuring the protection of individuals.
  • Provides increased resistance to wind and snow loads as well as high thermal stresses.
  • Meets the requirements of Safety Glazing Standards.
  • The glass maintains its colour, its chemical properties as well as light transmission properties after it has been heat-treated.

Standards and certifications

ANSI Z97.1 – Safety glazing materials used in buildings,
ASTM C1036 – Flat Glass, ASTM – C1048 – Heat-treated flat glass, CAN/CGSB 12.1 – Safety or laminated glass, CPSC 16 CFR- 1201 – Safety Standard for Architectural Glazing Materials

Types of glass

  • Clear, ultraclear, tinted
  • Low-e
  • Reflective


Interior Applications

Railings, glass doors and partitions, shower doors and enclosures


Exterior Applications
  • Insulated glass units and spandrel glass
  • Skylights, storefronts


Consult the tools section for all our documentation.


 *Certain conditions apply, contact us for more information.

Brascan Energy Marketing Inc