Designed to give a firm but flexible seal to joints in a wide range of fire rated structures, Everbuild Fire Mate will resist the passage of fire for up to 4 hours in suitably designed joints. It is also suitable for use as an acoustic sealant, sealing of voids and irregular holes in fire walls or other structures as well as internal perimeter pointing of fire rated door and window frames. Swells when exposed to temperatures in excess of 125°C Prevents passage of fire and smoke Over-paintable Permanently flexible No priming required Water based clean up Fast curing Easy to apply Excellent acoustic properties