Place an order by 10am for next day delivery Sydney Metro * Call 1300 557 973 for all other areas


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BOSTIK Firecaulk (Box 20)

Fire rated acrylic sealant

Bostik Firecaulk is a single component, non-sag, fire rated acrylic based gunnable sealant. A general purpose product for construction joints and the sealing of service penetrations in plasterboard, concrete floors and masonry wall constructions.

Bostik Firecaulk is a gun grade acrylic based sealing compound specifically manufactured for sealing low movement interior joints (up to +/- 25%) in masonry and plasterboard to provide a fire barrier for periods up to 4 hours. 

Where to Use

  • Residential, commercial and industrial applications 
  • Internal Walls
  • External Walls (in protected conditions or when over-painted - for full external exposure see Bostik Fireban One) 
  • Concrete Floors

Substrates & Suitable Materials 

  • Concrete
  • Plasterboard
  • Masonry
  • Cladding


  • 20 x 600mL Sausages

Please call 1300 557 973 for special order quantities.


Bostik Firecaulk PDS