Firefoam B1 Handheld is a quick-setting fire rated, one part polyurethane foam. It expands on application to yield up to 50 times the can contents and meets the extremely stringent requirements of the test criteria BS476 Part 20; Class B1. Fire rated up to 4 hours in certain joint configurations. Once cured, the foam can be cut, sawn or plastered over after approximately one hour.
EVERBUILD® B1 Handheld Fire Foam is a quick-setting one-part polyurethane foam with fire-retardant properties. The foam expands on application to up to 50 times its original volume and meets the test criteria BS476 Part 20; Class B1. Fire rated up to 4 hours in certain joint configurations. Once cured, the foam can be cut, sawn or plastered over after approximately one hour.
Gaps around pipe entries through fire-rated walls
To provide a fire-rated seal around window and door frames
Electrical wire chasing prior to plastering, where a fire rating is required
Deep joints prior to applying sealant or plaster
Irregular gaps in stone, brick, concrete or plaster
Windowsills and thresholds
Behind cladding to exterior walls
Behind soffit and barge boards
When used as part of a fire-rated joint, use in conjunction with EVERFLEX® FIREMATE® intumescent sealant for maximum fire rating.