USES FOR TEMPERED GLASS
Fully tempered glass is used traditionally in
place of other glass products in applications
requiring increased strength and reduced
likelihood of injury in the event of breakage.
The building industry, motor vehicle industry
and certain manufacturing industries find
tempered glass is effective and economical in a
wide range of applications.
Fully tempered glass can satisfy federal, state
and local building code requirements for safety
glazing in such applications as doors, side
lights, shower and tub enclosure, and interior
partitions. It is also used in storm doors,
patio-door assemblies, and escalator and
stairway balustrades. As a glazing product it is
used in windows and in spandrel areas (for wind
pressure, small missile impact and thermal
stress resistance). Special building
applications include sloped glazing, racquetball
courts, skylights (see below), and solar panels.
Any conditions or requirements imposed in the
applicable safety glazing laws and building
codes limiting such special uses should be
determined prior to glazing.
The domestic motor vehicle industry employs
tempered glass as side and rear windows in
automobiles, trucks, and multi-purpose vehicles.
Manufacturing industries use tempered glass in
refrigerators, furniture, ovens, shelving, and
Tempered glass should not be used where building
codes require wired glass for fire-spread
resistance. Tempered glass should not be used,
alone, where the objective is to provide
security against forced entry or bullet passage.
Combinations of annealed and tempered glass can
be effective barriers against forced entry and
bullet impact, if properly designed and
constructed. When using tempered glass in
fireplace screens, provisions must be made for
expansion and edge insulation.
TEMPERED GLASS IN SLOPED GLAZING AND SKYLIGHTS
Because of its high resistance to thermal
stresses and small missile impact, tempered
glass is used in skylights and sloped glazing.
On rare occasions when tempered glass in these
applications fails, it may fail completely from
the opening, individual fragments from tempered
glass are relatively small and harmless. A
number of these fragments may be loosely joined
and fall in this manner. Such pieces do not have
the sharp edges normally associated with broken
glass but may have significant weight. Some
building codes may require the use of screens
under skylights. The use of screens may also be
dictated by considering the risk of breakage and
the resulting consequences.