Bostik Fireban One is a fire rated, intumescent, low modulus, one component, and Class A polyurethane sealant. Weatherproof fire rated sealing of joints, Application temperature +5°C to +35°C, Resistant to normal weathering conditions such as rain, sunlight, snow, sleet, atmospheric contamination and pollution, Retains original properties after years of exposure, Uses: FIre & Acoustic Rated sealing of joints in:, Insitu concrete floors and walls., Precast and tilt up panels., Brickwork & blockwork., Rendered masonry., Plasterboard (Fire rated &/or Acoustic rated), Fibre cement sheet (Fire rated &/or Acoustic rated), Suitable for: Concrete floors, Concrete walls, Precast & tilt up panels, Brickwork & blockwork, Masonry, Plasterboard (fire rated & acoustic rated), Fibre cement sheet (fire rated & acoustic rated),