Tempered glass is a safety glass used in doors and windows were safety is a concern. It is manufactured by heating and then rapidly cooling the glass. This cooling process causes the outside surface to form a hard “skin” which is up to 7 times stronger than “annealed” glass. When broken, it shatters into small, less harmful fragments.
Laminated Glass is both a safety and security glass. It is made by bonding two pieces of glass together with a plastic inner layer called polyvinyl butyral. The plastic prevents the glass from separating when broken, which reduces the danger of serious lacerations. However, laminated glass cracks much easier than tempered on impact.