Impact windows are made with laminated glass. It usually consists of a resin sandwiched between two layers of glass. This allows the glass to withstand pressure before breaking. In a hurricane or category 5 storm there will be objects flying around.
High-impact glass, also known as laminated glass, consists of two glass sheets with a layer of PVB or resin in between. This structure allows the glass to withstand pressure, making breakage less likely. Unlike regular glass, which shatters into long shards, broken laminated glass stays in its frame. Commonly used in vehicles, high-impact glass can also be used in homes for safety, security, sound reduction and UV control.