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Firesound Fire Rated Acoustic Sealant

Firesound™ is a fire rated acoustic sealant, formulated primarily to perform as a barrier to the incursion of fire through expansion joints and wall penetrations such as pipes or cables. Firesound™ is also an effective acoustic sealant.
Key Benefits
  • Fire rating for gaps up to 50mm
  • Up to 4 hour fire rating (AS1530.4-2005)
  • Excellent acoustic properties (STC 65)
  • Good flexibility; +/- 20% joint movement capability
  • Paintable
  • Intumescent; expands when exposed to fire or extreme heat


  • Steel
  • Concrete
  • Plasterboard
  • Aluminium


  • Sealing exterior and interior construction joints that are subject to movement (up to +/-20%) in pre-cast concrete panels, block work and brickwork
  • Gaps around cables, metal pipes, conduits, busways and ducts that penetrate walls, floors and ceilings
    If joint movement is not required, Firesound can be used as a putty for filling holes in fire rated substrates

Consult a fire engineer before use in a fire rated application.

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