Pro MS Firerate

Product Description

B&L PRO MS FIRERATE LIMESTONE is a high quality single component fire rated joint sealant with high adhesive strength. When cured it will provide a tough, flexible seal capable of achieving ±25% joint movement. This sealant provides excellent elastic recovery and excellent weather resistance assuring a long term fire rated joint seal.

It is based on MS-Polymer®, chemically neutral and fully elastic. For use in high movement joints in construction, automotive, marine and aerospace areas where a tough flexible rubber is required with good fire retardant characteristics.

Areas of Use

  • Expansion and connection joints in the building industry.
  • Sealing of joints in prefabricated buildings.
  • Movement joints in high rise constructions.
  • Sealing between window frames and door frames.
  • Flexible joints in marine applications.
  • Flexible bonding in caravans and mobile structures.
  • Exposed movement joints on all usual building substrates.


  • Fire Rated for up to 4 hours to AS1530 Part 4.
  • High bond strength on nearly all surfaces.
  • Excellent adhesion on porous substrates.
  • High performance mechanical properties.
  • Flexible elastic rubber.
  • Straightforward application even in adverse conditions.
  • No bubble formation within sealant (in high temperature and humidity applications).
  • Primerless adhesion on many substrates (except where water pressure may occur).
  • Very easy to tool and finish.
  • Colour stability and UV resistant.
  • Ecological advantages – free of isocyanates, solvents, and acids.
  • Minimal health and safety considerations.
  • Over-paintable with all water based paints and many other systems.
  • Excellent weather resistance in all climates.
  • No staining of porous materials such as natural stone, granite (for marble please test a small area).

Available Colours

  • Limestone

Technical Data Sheet

Request Material Safety Data Sheet

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