Laminated glass is a type of safety glass that holds together when shattered. It consists of two
layers of glass with a layer of polyvinyl butyral (PVB) film,
called the interlayer. It is stronger because of the layering and
reinforcement, and when it does break, the plastic essentially acts
like tape, holding the pieces in place instead of allowing the
sharp shards to fall.
Laminated glass is normally used when there is a possibility of
human impact or where the glass could fall if shattered and also
for architectural applications. Skylight glazing and automobile
windshields typically use laminated glass.
In geographical areas requiring hurricane-resistant construc-
tion, laminated glass is often used in exterior compared to
unlaminated glass panes of the same thickness.
Laminated glass is also used to increase the sound insulation
rating of a window, where it significantly improves sound
attenuation compared to unlaminated glass panes of the same