PFC Corofil Firestop Compound

PFC Corofil Firestop Compound
Firestop Compound poured onto permanent mineral fibre shutter in floor

Service Penetrations






  • Fire Protection Engineer

Product Description:


PFC Corofil Firestop Compound is used to provide a fire rated seal around service penetrations in fire rated walls and floors. Tested in accordance with BS 476:Part 22, PFC Corofil Firestop Compound provides up to 6 hours fire protection.

General benefits:

• Smoke seal
• Good acoustic insulation
• Simple installation
• Load bearing seal
• Suitable to make good around most types of service penetrations
• Unaffected by humidity
• Maintenance free
• No smoke emission

Fire Rating

PFC Corofil Firestop Compound will provide up to 6 hours fire protection (see technical data sheet for further details).


PFC Corofil Firestop Compound will provide up to 51dB Weighted Sound Reduction Index (see technical data sheet for further details).


Firestop Compound is a specially formulated gypsum based mortar, which is mixed with water to be trowelled or poured around service penetrations. Plastic pipework must be protected with either PFC Corofil Firestop Collars or Intumescent Pipe Wraps (see data sheets).

In floors, PFC Corofil permanent shutter panel (50mm) is cut and friction fitted between services and the edges of the floor slab. Firestop Compound is then trowelled over the shutter to a depth of 25mm thick. This is allowed to harden. The Firestop Compound is then mixed to a pouring grade and tops the seal up to the required depth.

In walls, Firestop Compound is mixed into a stiff consistency for trowelling into smaller openings. In larger openings, Firestop Compound can be cast into blocks which can be built into walls.

These are approximate calculations based on 22kg bags. The coverage does not take into account the percentage of the hole filled with services. 


Install PFC Corofil Firestop Compound to provide 1,2,3 or 4 hour fire rating to all service penetrations through all fire rated walls and floors. Installation to be fully in accordance with manufacturer’s instructions.


When ordering this product you will need the following information:

• Size of opening
• Details of service penetrations
• Fire rating
• Quantity required

Please order from our technical sales office.

Product Video


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