All units can be re-engineered and safety glass is no exception, there
are basically two types of safety glass toughened and laminate.
Laminate glass is basically two thin pieces of standard annealed glass
with a safety film sandwiched between them, the re-engineering process is
carried out in the same way as standard window annealed glass.
Toughened glass is heat treated annealed glass, toughened glass cannot
be drilled therefore the re-engineering process is carried out through the side
of the unit (spacer bar), different tools and equipment is needed to work on
toughened units and the unit will need to be removed from the frame to gain
access to the unit’s spacer bars.