Fire Mate Sealant is an intumescent acrylic sealant that swells when exposed to temperatures in excess of 125 degrees to prevent the passage of fire and smoke and has a fire rating of up to 4 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 Brick, stone, concrete, timber Fire retardent properties Overpaintable when cured Interior use Water based product/water clean up