F/RM Fire Rated Intumescent Mastic
FR/M Intumescent sealant is a white sealant for indoor joints where a fire retardant seal is required. This intumescent acrylic sealant swells when exposed to temperatures in excess of 125 degrees C to prevent the passage of fire and smoke and has a fire rating of up to 5 hours in certain joint configurations. Fire rated to BS 476 Part 20/EN1366-4 (2006). Acoustic rates to BS EN ISO 140/3. Tested for air permeability to EN13141-1.
Contact our technical sales team for further information and advice.