3M™ Expantrol Flexible Intumescent Strip E-FIS is an intumescent tape designed to seal the air spaces between doors, frames and glass to help prevent the spread of fire, smoke, toxic gases and other byproducts from penetrating into adjacent areas. Intumescent material expands and forms a hard char when exposed to heat. This flexible, conformable strip can be quickly cut to required sizes.. Intumescent strips have a different composition, as they're designed to expand in response to high temperatures. Cold smoke wouldn't activate it, but a bare flame certainly would. The seal expands rapidly to fill the gap around a door frame. This is designed to help contain fires and maintain safe fire exit routes. Smoke seals are used in.
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Intumescent Strips. Fire, smoke, and acoustic protection for timber, metal and composite doors. Fire doors are a crucial component in the passive fire protection of a building, and all fire doors must be fitted with the appropriate seals. The fire door strips are placed between the door frame and the door on all four sides.. Follow these simple steps to fit your fire and smoke seals to door frames correctly: Clean the door frame with a damp cloth. Measure the length of the frame where the seal needs to be fitted. Remove the adhesive backing on the seal. Mount the strip on the side of the door and apply pressure to stick it in place.
