Selleys Fireblock is a low modulus, non-slumping, PSA composite sealant suitable for fire and acoustic rated construction.

  • Up to 4 hours fire rating in accordance with AS1530.4-2005 and ASTM E1966-07*
  • Tested to ASTM E814-09 for penetrations in plasterboard lined walls
  • Acoustic rated in 67Rw walls AS/NZIS0717-1
  • UV indicator to confirm Fireblock usage
  • Excellent adhesion to joint movement capabilities
  • Paintable
  • Isocyanate free
  • Low Odour
  • Water clean up

*For fire rating, minimum joint width 40mm. Install backing rod in joint to control sealant depth



Can be used for

  • Non-trafficable control joints in concrete, masonry, aerated concrete and brick fire rated construction.
  • Acoustic sealing between most common building materials such as concrete, masonry, aerated concrete, plasterboard, fibre cement, metals, timber and plastic as part of a suitable design.
  • Penetrations and perimeter sealing in plasterboard


Technology PSA composite
Skin Time (23C/50%RH)
Movement Capability ± 25%
Tensile Strength
Shore A Hardness
Curing rate (23C/50%RH)

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