H.B. Fuller Firesound Original Fire Rated Acoustic Sealant

H.B. Fuller Firesound Original is a high-performance fire-rated acoustic sealant designed for joints and penetrations, providing up to 4 hours of fire resistance for gaps up to 50mm. It expands when exposed to fire, preventing the spread of flames through expansion joints while maintaining flexibility to accommodate movement. Doubling as an acoustic sealant, it effectively reduces noise transmission, making it ideal for both fire protection and soundproofing. Available in convenient 450g cartridges, Firesound Original is the perfect solution for enhancing safety and acoustic performance in construction and renovation projects.