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NOTE: This is an unformatted excerpt from our online fire protection training library.

Firestopping Products and Materials

Firestopping Products

Composite Sheet Firestops

Composite Sheet Firestops Composite sheet firestops are rigid fire-resistant panels composed of a layer of firestopping material bonded to a galvanized steel sheet on one side.   A composite sheet is reinforced with shaped steel wire mesh and bonded with aluminum foil on one side. These sheets or panels are used to seal penetrations where a large opening has been made. The firestopping material is usually intumescent and forms a char material that retards heat transmission and tightly seals the penetration against the spread of combustion products. The maximum size penetration that can be firestopped with a specific composite sheet ranges from 2 sqft to 36 sqft. Check the limitations for the product used. The photo on the right shows a cable tray that penetrates a composite sheet. Firestop putty is used around the cable tray, in combination with the composite sheet.        
NOTE: This is an unformatted excerpt from our online fire protection training library.

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