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STI firestop composite sheet seals medium to large size openings

Specified Technologies Inc. has introduced the SpecSeal, a composite sheet that provides an effective seal against fire, smoke and combustion by-products for openings of any shape in common constructi...


January 1, 2005  


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Specified Technologies Inc. has introduced the SpecSeal, a composite sheet that provides an effective seal against fire, smoke and combustion by-products for openings of any shape in common construction assemblies.

SpecSeal is made up of an intumescent layer bonded to a galvanized steel sheet and covered with steel-wire mesh covered with aluminum foil.

When exposed to temperatures of 177C. it expands up to 15 times its original size to form a dense insulative char that minimizes heat transfer.

It can also be cut to fit irregular shapes and easily fastened to concrete or gypsum board with screws or anchor bolts.

Specified Technologies