Heat-soaked glass

Reduce the risk of spontaneous breakage

Guardian heat-soaked glass helps avoid unpredictable breakage caused by nickel sulfide (NiS) inclusions. Float glass can contain these invisible imperfections that increase in volume over time and cause stress to fully tempered glass. The Guardian heat-soaking process exposes NiS inclusions in fully tempered glass, then breaks them safely in a heat-soak chamber before the glass reaches the field.

Guardian offers SunGuard® coated glass products that can be safely heat soaked if it is determined the heat-soaking process is necessary. Explore our SunGuard coated glass below.