General causes of glass deterioration

Potentially, glass is a very strong material. However, its strength is significantly reduced due to the presence of small, invisible surface or edge defects called Griffith Flaws. These microcracks act as stress concentration points in the glass and a source of crack propagation. In addition, the strength of glass can be weakened by visible defects.
Most cases of glass failure occur for one or several of the following reasons:

  • Surface / edge defects
  • Weld spatters
  • Impact from foreign objects
  • Thermal overload
  • Foreign inclusions

Glass should always be stored in a clean and dry place, protected from direct sunlight or excessive humidity. During operations such as handling, transportation, storage, and installation with glass or insulated glass units, special care should be taken.