This Pyro Mate Firesil is a neutral cure, elastic silicone sealant which conforms to the EN1366-4 standard for fire retardancy and has a fire rating of up to 5 hours in certain joint configurations. CE Marked under both ETAG 026 Part 3 and EN15651-1:2012 type F-EXT-INT CC class F 25LM.
It can be used for all building joints that require a fire rating. It will also seal joints, voids and irregular holes in fire walls, partitions, and other structures.
The Neutral cure adheres to most building surfaces, porous and non-porous and will remain permanently flexible. It has excellent weathering characteristics – suitable for internal and external use. It can be used in joints up to 50mm wide and 25mm deep. There is priming required for most construction substrates.