Fire batt is a high density mineral fibre board coated with on both sides with intumescent mastic that gives up to 4 hours (for the 60mm version) fire protection during a fire. This makes it a great option for sealing around penetrations in walls an floors.

Halogen free, it is available in 1200mm x 600mm and either 50mm or 60mm, the board, in accordance with British Standard BS476: Part 20: 1987 (an EN 1366-3), changes into a hard ceramic in the heat of a fire which then prevents fire traveling through holes in walls.

Once cut to size, the cut edges of fire batt should be coated with our special spreadable mastic.