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ROCKWOOL FirePro Firestop Compound

A specially formulated gypsum based product intended to provide a fire rated seal around service penetrations in fire rated walls and floors. Supplied as a powder to be mixed with water, the resulting compound is load bearing and provides a smoke seal and good acoustic insulation.

The compound is trowelled or poured around the service penetration and can be used in floors and walls.

Existing Firestop Compound installations can be easily drilled or sawn to allow the provision of additional or replacement services and subsequently re-sealed. Recommended minimum clearance between services and surrounding structure: 50 mm, or half the diameter, whichever is greater.


  • Smoke seal.
  • Good acoustic barrier.
  • Suitable for making good around most types of service penetrations.
  • Load bearing – contact ROCKWOOL for further details.
  • Simple installation.
  • No smoke emission.
  • Maintenance free.
  • Unaffected by humidity.
  • Available within 48 hours of order.

General information

Uniclass 2015

Pr_20_31_53_43 Intumescent mortarsPrimary


P12/340 Intumescent mortar

P12/37 Intumescent mortar

Specification data - Intumescent mortars

Product Reference

ROCKWOOL Firepro Firestop Compound

Standard product features

Performance and properties:

Tested to BS 476: Part 20, Firestop Compound provides up to 4 hours fire protection.