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Fireproofing
Fireproofing PVC pipe penetrations with PU foam and intumescent sealant

Fireproofing PVC pipe penetrations with PU foam and intumescent sealant

This solution has been tested with PVC pipe Ø 32mm, with total penetration width of 90 mm and sealant’s depth of 25 mm.

Fire resistance: EI240.

1

Filling the penetration

2

Sealing the penetration

Filling the penetration

To guarantee the pipe penetration’s fire resistance, thermal and sound insulation, the opening around the pipe penetration must be filled with fireproof construction foam.

Fire Rated Gunfoam B1 187 – fire-rated one-component polyurethane gun foam for filling and sealing in places with heightened fire safety requirements. Adheres well to most materials, such as wood, concrete, stone, plaster, metal, PVC and polystyrene.

Alternative product: Fire Rated Foam B1 296 is a fire-resistant PU strawfoam for installing and sealing fire-proof doors, windows, walls and other sealing works in places with heightened fire safety requirements.

Sealing the penetration

To ensure the fire-resistant sealing of pipe penetration before finishing works, an intumescent acrylic should be used.

FireStop Intumescent Acrylic Graphite 682 – an acrylic-based intumescent sealant with added graphite for fireproofing joints and sealing penetrations. Expands with heat and blocks all passage of smoke and fire. Starts expanding from +200°C.