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Fire Rated Sealants

Bostik Fireban One

Bostik Fireban® One is a fire rated intumescent, low modulus, one component, Class-A polyurethane sealant. When cured it will form a tough, flexible fire rated seal capable of cyclic expansion and compression movement of 50% (± 25%) of the original installed joint width. Fireban One is resistant to normal weathering conditions such as rain, sunlight, snow, sleet, ozone, atmospheric contamination and pollution.


  • Fire Rated up to 4 hours
  • Acoustic rated
  • One component, no mixing required
  • Low modulus 50% (+25%)
  • Excellent durability
  • Retains its original properties even after years of weather and UV exposure
  • Resistant to weathering conditions
  • Paintable*
  • Non-staining
  • Does not support fungal growth
  • Australian made


  • Insitu concrete floors and walls
  • Precast and tilt up panels
  • Brickwork and blockwork
  • Rendered masonry
  • Plasterboard (Fire rated and/or acoustic rated)
  • Fibre cement sheet (Fire rated and/or acoustic rated)