Heat-strengthened glass provides necessary resistance to thermal stress associated with high performance glazing materials such as tinted glass, reflective glass and Low-E glass. It also provides necessary resistance to heat building up when using spandrels glass.
When producing Heat strengthened laminated glass as compared to Tempered Laminated glass, Heat-strengthened glass allows the interlayer to laminated glass to adhere more evenly because of a flatter finish surface.
Heat-strengthened glass with its flatter surface also results in the facade having less optical distortions. With the exception of strength and breakage characteristic, heat-strengthened glass retains the normal properties of annealed glass including chemical resistance, hardness, expansion and deflection. This glass is difficult to break compared to ordinary annealed glass but unlike toughened safety glass it breaks typically edge to edge and fragments.