Capabilities
Most architectural glass products can be heat-treated. Some
patterned glass and decorative glass with a deep surface pattern
may not be heat-treatable. Silk-Screened and ceramic spandrel
glass are always either heat-strengthened or tempered as part of
their fabrication process. When spandrel glass is incorporated
into insulating glass units, both lites must be heat-treated.
Heat-absorbing glasses, such as standard and high performance
tints, reflective glasses and some Low-E glass, may require heat
treatment to reduce the probability of thermal-stress breakage,
especially when used as part of an insulating glass unit.