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EVERBUILD® B1 Gun Grade Fire Foam 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 DIN 4102 Part 1 for Construction Materials; Class B1 and BS 476 Part 20. Fire rated
up to 4 hours in certain joint configurations. For use
with an Everbuild® Professional Foam Gun; once cured
the foam can be cut, sawn or plastered over after only
one hour.