Technical Information
For further information relating to the installation and Health & Safety please
click here to view installation instructions.
PFC Corofil C450 Cavity Firestops provide firestopping between the edge of a floor slab and curtain walling/cladding system, or within a cavity wall construction. Tested to BS476 Part 20, PFC Corofil C450 Cavity Firestops give up to 2 hours’ fire protection in cavities of up to 1000mm wide fitted vertically and horizontally.
- Simple installation
- Smoke seal when used in conjunction with Firecheck paint or foil facing
- Maintenance free
- Unaffected by humidity and moisture
- Good acoustic insulation
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| C450 Cavity Firestop with foil facing fitted between edge of floor slab and curtain walling with multi purpose brackets |
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C450 Cavity Firestop used in conjunction with a vertical DPC to form blockwork cavity barriers |
Description
PFC Corofil C450 Cavity Firestops are manufactured from a high density, low phenolic binder content, rock fibre. C450 Cavity Firestops is supplied in one metre lengths to suit the size of the cavity to be filled. The depth of the product is dependent on the fire rating required. (See Fire Rating)
C450 Cavity Firestops thickness is supplied oversized for fitting under slight compression.
For cavities in excess of 100mm wide, C450 multi purpose brackets must be fitted to provide additional support. (See installation instructions)
Profiled cladding sheets must be fitted with C144 Firestop Blocks bonded into position with PFC Corofil slip adhesive, in conjunction with the C450 installation.
It is recommended that a fixing rail is positioned as close as possible to the cavity barrier to restrict movement/expansion of the cladding or curtain walling.
Fire Rating
| Cavity Size |
Fire Integrity Rating |
Fire Insulation Rating |
Depth of Product |
| 10 - 100 |
120 minutes |
30 minutes |
80mm |
| 101 - 1000 |
120 minutes |
30 minutes |
100mm |
Acoustic Rating
PFC Corofil C450 Cavity Firestop has been acoustically assessed in a variety of constructions. Please contact our sales office with the proposed details of use and required acoustic rating. Two number PFC Corofil C450 Cavity Firestops (220 wide x 75mm thick) compressed into a 210mm gap between edge of slab and a 46mm insulated wall cladding. The product must be coated with Firecheck paint. Weighted Sound Reduction Index (Rw) of up to 48db.
Smoke Seal
PFC Corofil C450 Cavity Firestops can provide a smoke seal by either:
- Painting the exposed faces with Firecheck paint
- Using foil encapsulated C450 Cavity Firestop and sealing joints with PFC Corofil Foil faced tape
Fibre Migration
Fibre migration can be prevented by the use of:
- Firecheck paint
- Shrink wrapping cross sections up to 250mm thick x 150mm wide
- Foil facing
Specification
Install PFC Corofil C450 Cavity Firestops to provide up to 2 hours’ fire rating in all vertical and horizontal cavities. Installation to be fully in accordance with manufacturer’s instructions.
To Order
Contact our technical sales office (Tel: 020 8391 0533) with the following details:
- Fire Rating
- Cavity size
- Specify if you require the product to be foil faced, shrink wrapped or plain
- Firecheck paint- quantity (litres) based on a coverage of 1litre/m2