SIKA® Firerate PU polyurethane joint sealant

SIKA® FIRERATE PU | Polyurethane Joint Sealant

Fire rated, highly flexible, polyurethane joint sealant

  • Fire rated to Australian standards for up to 4 hours
  • Suitable for interior and exterior applications
  • Excellent adhesion and permanent flexibility


Sikaflex® Firerate PU is designed for sealing exterior and interior movement joints where a fire rating of up to 4 hours is required in:

  • Expansion and construction joints
  • Tilt-up construction
  • Precast and in-situ concrete
  • Brick and blockwork
  • Areas requiring intumescent sealing
  • Sikaflex® Firerate PU also fulfils the basic function of a gap filler and joint sealant against water and dust penetration


  • Fire rated up to 4 hours (AS1530 Part 4, AS4072 Part 1)
  • Superior UV resistance and durability
  • Permanently flexible
  • Accommodates 50% total joint movement
  • Non-staining
  • Single component – no mixing required
  • Excellent adhesion with no primer
  • Fast skinning time


600ml Sausage



Available Colour
  • Grey