Thermal stress results from differential heat build-up between the main body of the glass and the edge, leading to stresses that can result in fracture in annealed glass types. As such, the resistance of glass to thermal stress is a key consideration for a robust glazing design that can withstand normal service conditions without failure
Thermal stress assessments are a common practice in glazing design, and allow the potential risk of thermal fracture to be determined, and if necessary, negated through design.
As well as the performance of glazing configurations, the internal and external environmental, as well as installation, conditions will all influence the level of potential heat build-up in glazing, and so the risk of thermal fracture.
Documents within this section are aimed to provide background detail on thermal stress as well as information on contributory factors.