B1 fire retardant gun foam

The B1 fireproof polyurethane foam has a technologically advanced low-expansion formula that makes it suitable for filling gaps during installation of joinery projects in fire-rated wall barriers. The foam is used for sealing 0–40 mm wide installation gaps with a maximum fire resistance rating of EI 60, 0–20 mm wide installation gaps with a fire resistance rating of EI 90 and 0–10 mm wide gaps with fire resistance rating of EI 120. The product is rated to Bs1, i.e. it is nonflammable and fire retardant.