Envirograf EN/F1 Fire Resistant Intumescent Sealant
The Envirograf EN/F Dark Grey Intumescent Sealant is supplied as one 310 ml cartridge for sealing gaps around compatible pipes, cables and other services passing through fire-resistant walls. The intumescent graphite compound provides up to two hours of fire protection and insulation when correctly installed within a suitable fire-stopping system.
Suitable for plasterboard, hollow, brick, block and concrete walls, the Envirograf EN/F Dark Grey Intumescent Sealant can be used around compatible aluminium, copper, plastic and steel pipes up to 50mm in diameter, as well as cables up to 32mm in diameter. Its water-based formulation becomes water-resistant after curing.
Key Features – Envirograf EN/F1 Fire Resistant Intumescent Sealant
- Supplied as one 310 ml cartridge
- Dark grey intumescent graphite sealant
- Passive fire protection for service penetrations
- Provides up to two hours of fire protection and insulation
- Suitable for plasterboard and hollow walls
- Suitable for brick, block and concrete substrates
- Compatible with suitable pipes up to 50mm in diameter
- Compatible with suitable cables up to 32mm in diameter
- Water-based formulation
- Becomes water-resistant once fully cured
Suitable Pipe Materials
- Aluminium
- Copper
- Plastic
- Steel
Technical Specifications
- Brand: Envirograf
- Product type: Fire-resistant intumescent sealant
- Sealant reference: EN/F1
- Colour: Dark grey
- Cartridge size: 310 ml
- Quantity: One cartridge
- Maximum compatible pipe diameter: 50mm
- Maximum compatible cable diameter: 32mm
- Fire protection: Up to two hours
- Properties after curing: Water-resistant
Application in Plasterboard and Hollow Walls
Ensure the opening is approximately 40mm larger in diameter than the service passing through it. Apply the dark grey EN/F1 sealant around the service, filling the opening and stopping approximately 10mm short of the front surface where a compatible finishing sealant will be used.
Application in Solid Walls
For brick, block and concrete substrates, ensure the opening is approximately 30mm larger in diameter than the service. Fill around the service using the dark grey sealant, leaving approximately 10mm at the front where a compatible finishing sealant is required.
