EVERFLEX FIRE MATE is a five hour rated, one part, emulsion acrylic based, intumescent Acoustic sealant that gives a firm yet flexible seal to joints in a variety of fire rated structures. Tested following the principles of BS EN 1366-4:2006 as detailed in Warrington Fire Research Report No. 181967 (May 2009). Acoustic rated to BS EN ISO 140/3. Tested for air permeability to EN13141-1. The product, in suitably designed joints will resist the passage of fire for up to 5 hours. The selected fillers used in this formulation also make it suitable for use as an acoustic sealant.


  • When exposed to heat, it swells greater than 150% of its original size, creating a char that will resist the passage of fire for up to 5 hours.
  • No priming required for most construction substrates
  • Permanently flexible with more than 100% elongation to ISO8339
  • For use in joints up to 50mm wide.
  • Excellent acoustic properties for sound deadening – Average noise reduction of 24db (100-3150Hz)
  • Non slump – easy to apply and tool off.
  • Fast cure – tack free in 15 minutes.
  • Overpaintable.
  • Certified under the harmonized European standard EN15651 for façade for interior and exterior applications in compliance with the Construction Product Regulation