Hand Held fire rated one component, expanding polyurethane foam filler. Rapid curing. Excellent thermal and acoustic insulation properties. Excellent primerless adhesion on most construction materials. Fire rated polyurethane foam filler|EN1366-4 – Fire resistance, up to 4 hours depending on joint configuration|Fire class DIN 4102 B1|Acoustic rating – 58 dB|Insulation factor – 36mW/mK · · · sawn · · or plastered over after only one hour. · · Aerosol based foam · · Meets requirements of BS476 Part 20 (1987) Class B1 for construction materials · · Available in packs of 12 · · Insoluble in water · · Highly viscous · · Flash point: -4C · · Stable under normal conditions