Do impact windows protect against burglary?
Impact windows’s and doors’s main design characteristics are the shatter-resistant glass securely fastened to a heavy-duty aluminum frame. The impact-resistant glazing consists of two layers of annealed or tempered glass bonded to an intermediate layer of a shatter-proof membrane. This membrane is typically made of Polyvinyl Butyral (PVB), a plastic film which varies from .015 to .090 inches in thickness, depending on the design pressures needed. If the outer glass breaks, the shattered pieces will adhere to the PVB film. In contrast, standard-glass windows are made of standard float glass that, when broken, will fracture in large sharp shards. Given these characteristics, it is very difficult for any intruder to break into a house through an opening with impact-resistant glass.