Walraven fire stop products now tested and approved for use with fire batts

Published on: 23 May 2019

We are pleased to confirm that our Pacifyre® MKII Fire Sleeves and Pacifyre® BFC Fire Collar have now been officially tested and approved for fire sealing pipe penetrations through fire batts. Our products can be used with both metal and plastic pipes, and can provide up to a 2 hour fire rating – depending on the specific circumstances.  Our silicone and acrylic sealants were also included in the tests.

For full details of the approvals or to request a copy of the classification report, please contact our technical team at [email protected] or call 01295 753400.

What are fire batts?

A fire batt is typically a stone wool board that has a high resistance against mechanical load.  Fire batts are often used to seal larger cavities in fire compartment walls and floors where pipe, cable trays, ductwork and other services are running through the partition.  The fire batt prevents the spread of fire and smoke, and can also be used on its own where there are no services passing through. pacifyre

How to install fire batts with fire stopping products

  • Installing a fire batt starts with selecting the firestop for the penetrant and cleaning the installation to get rid of dust and dirt
  • When choosing an inbuild solution like the Pacifyre® MKII Fire Sleeve, apply this first according to the installation instructions
  • A Pacifyre BFC collar can be installed after fitting a fire batt 
  • Measure and layout your penetrants on the fire batt
  • Cut the fire batt as closely and accurately as possible around the firestops, penetrants and edges of the cavity, being careful not to make any larger than required holes in the fire batt.
  • After placing all sections of the fire batt in place, seal the joints with Pacifyre® A acrylic where needed and around the perimeter

Make sure you do not see any bare stone wool.  The special coating and Pacifyre® A protect the stone wool and their binders from direct exposure to the flames.  Although most quality fire batts use specialized binders to improve their fire resistance over standard stone wool batts, this is still the weakest aspect in stone wool fire batts and they need protection to ensure fire rating.

Read our Fire Stopping Guide   Find our Fire Stopping products More about our Project Support



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