Dow Corning Firestop 400 is an intumescent acrylic sealant for internal applications designed to keep fire walls or partitions intact. Under fire conditions, Dow Corning Firestop 400 does not emit halogenated by products.
Tested to B.S.476 part 22: 1987
Developed to maintain the integrity of fire walls or partitions
Up to 4 hour fire rating can be achieved
Class 2 classification for surface spread of flame
Extreme temperature resistant, mildew resistant, mould growth resistant, ozone resistant and ultaviolet radiation resistant
Tack free time is from 30 to 45 minutes
Good unprimed adhesion to most construction substrates
Uses involve internal perimeter pointing around door and window frames and in joints formed where fire rated partition sections meet
Technical specification
Waist Sizeab45ci57gsTypeSealantSize380 mlInterior or Exterior UseInteriorContainer TypeCartridgeColourWhiteSupplier Part Number2938863Range DescriptionFirestop 400Brand NameDow Corning