High-density fire stopping solutions

High-density fire stopping solutions

Gaps and cavities between walls, floors, and roofs provide an unrestricted route for smoke and fire to spread throughout a construction.

To ensure the fire resistance of your structure is never compromised in this way, it’s essential you create an airtight and smoke seal using high-quality fire-stopping products.

Here at Grayson, our range of Fire Stop Strips and Trapezoidal Blocks are made from high-density, moisture resistant stone wool, and provide up to six hours of fire protection when installed between masonry or concrete.


High-density fire stopping solutions

Easy installation

  • Pre-cut to suit the specific gap size or trapezoidal shape
  • High-density stone wool retains stiffness during the installation process
  • Can be push fitted into place to achieve a compression fit
  • No need for mastics or sealants


Significant smoke and fire protection

  • Provides up to six hours of fire resistance depending on joint and cavity size
  • High-density stone wool enhanced for stability at high temperatures
  • Independently assessed by Warrington Fire Research Centre
  • Tested to BS 476 part 20


Additional benefits

  • Available shrink wrapped to prevent fibre migration
  • Improves acoustic performance when applied with Fastight Coating


For more details on our range of fire stop products, contact your account manager on 08448 50 40 50.