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FireMastic 300

FireMastic-300 intumescent Fire-Rated Acrylic Sealant is a one part acrylic emulsion that is designed to resist the passage of fire, smoke and sound. FireMastic-300 will intumesce and form a char when exposed to the heat of a fire, which will prevent the passage of fire and smoke for up to 5 hours in both integrity and insulation.

In normal use it will also maintain the sound reduction index of a structure. FireMastic-300’s superior acoustic properties means it offers up to a 63dB sound reduction, making it ideal for high performance STC installation.

Key Features
  • High performance 5 hours fire rated mastic
  • Intumescent
  • Up to a 63dB sound reduction
  • High yield, double the usage of most sealants
  • Available in 310ml cartridge or 600ml foil sausages
Scope of Use

FireMastic-300 is ideal for the following fire rating applications:

  • Linear gaps seals in plasterboard and dry wall linings
  • Sealing and filling joints in fire rated partition walls and joints
  • Sealing of low movement construction joints
  • Sealing the perimeter of intumescent dampers
  • Secondary sealing around penetration services
  • Areas requiring acoustic barriers or sound reduction
  • Internal use only
Other Performance Attributes

FireMastic-300 is approved to AS1530.4:2005 (Report No FAR3463), offering up to -/300/300 FRL

Data Sheet

A leading supplier of building materials to the commercial industry-including ceiling panels, aluminium partitioning, acoustic & thermal insulation, whiteboards and passive fire solutions.

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