Stopseal Mastic - Spray/Brush grade 5kg

Stopseal Mastic – Spray/Brush grade 5kg

PS Coating for Service Penetration and Blank Seals

PS Coating is an ablative coating applied to mineral wool board used to reinstate the fire resistance performance of wall construction where they have been provided with apertures for the penetration of single or multiple services.

  • Fire Resistant testing to EN 1366-3 EI 60.
  • Fire Resistant testing to EN 1366-3 EI 120 Blank Seal.
  • Fire Classification to EN 13501-2.
  • IET (IEE) 17th Edition Fire Stop Compliant to Regulation 527.1-3 – Electrical Installations.
  • BS 7671-2008 Chapter 42 & 52 – Electrical Installations Fire Resistance.
  • Fire resistance tested in flexible & rigid walls, Composite Panel and CLT.
  • Air Permeability testing to EN 1026 to 600Pa.
  • Acoustic Isolation testing to EN 10140 to 51dB.


Product Code CPS07/5

30 in stock

Next day delivery available


Ablative PS Coating is used in conjunction with CPS08 Coated Fire Batts and CPS06 Trowel Grade Ablative Mastic to form fire barriers in service openings and around mechanical and electrical services where they pass through fire compartment walls or floors.




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