FulaFlex FR Hybrid Polymer Fire Rated Sealant

FulaFlex™ FR is a high performance, elastomeric and intumescent low-modulus fire resistant construction sealant for use in interior and exterior joint sealing applications and has been tested in accordance with AS1530.4-2014. FulaFlex™ FR cures to form a durable, permanently flexible and highly weather resistant sealant capable of ±25% joint movement, with negligible shrinkage and excellent adhesion to a wide range of substrates. FulaFlex™ FR carries a non-hazardous classification and is solvent free/low in VOC. Fulaflex™ FR combines excellent cold weather gun-ability with bubble free curing in hot/humid climates.


Check certification requirements or consult the relevant certifying authority before use in a fire rated application.

Key Benefits

  • Fire rating for wall joints 10 - 50mm wide
  • Up to 4 hour fire rating (AS1530.4)
  • Excellent flexibility; ±25%, UV stability and weather resistance
  • For interior/exterior use
  • Paintable
  • Can be applied to damp surfaces
  • Solvent and isocyanate free
  • Water and acrylic free


  • Sealing interior/exterior construction joints that are subject to movement (up to ±25%) in concrete panels, block work, brickwork and fire-rated plasterboard
  • Where a sealant is required that is unaffected by rain exposure early in the cure phase

Compatible Substrates

  • Concrete
  • Mortar
  • Fire rated plasterboard
  • Zinc/gal/stainless steel
  • Aluminium
  • Timber
  • Plastics (pre-test)

Packaging Options

  • 600ml Sausage


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