Fischer Fire Rated Expanding Gun Foam B2 60007. Hardens via chemical reaction with atmospheric humidity. Single component polyurethane foam. Rapid hardening foam reduces processing time. Professional application with use of gun. No pre-moistening of surface. CFC free propellant. Noise-reducing properties. Long storage life. Resistant to rotting. Resistant to ageing. Foam is coloured grey to differentiate from standard foams. Fire retardent foam must be used in situations where a joint must conform to fire ratings DIN 4102 Grade B2 BS476. In addition the foam must be protected from direct contact with flames by means of an acylic sealant from the Fischer Barrier range. SPECIFICATION: . Foam Yield (free foaming)45 litres. Resistance to temperature of hardened foam:-30C to +80C. Non tacky after (approx):8 mins. Load bearing after (approx):6-12 hours. Fully hardened:24 hours
