Everbuild B1 firefoam gun grade
Firefoam B1 Gun Grade is a quick-setting fire rated, one part polyurethane foam. It expands on application to yield up to 50 times. 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.
