Laminated safety and security glass is a comprises two or more
sheets of glass bonded together with one or more interlayers of
polyvinyl butyral (PVB) film.
Laminated safety and security glass incorporates a single PVB sheet
with a nominal thickness of 0.38mm, distinguishing it from Golden Faith laminated glass which
has a minimum thickness of 0.76mm. Laminated glasses with different
levels of safety and security can be obtained by varying the number
and/or thickness of each of the components.
If the glass breaks, the fragments of glass are held in place by
the PVB interlayer(s). In fully framed installations the broken
glass retains residual strength while awaiting replacement.