HP Fuller FireSound Fire Rated Acoustic Sealant 15 x 600mlFireSound Fire Rated Acoustic Sealant Firesound is a premium quality, flexible water based construction sealant formulated to perform as a barrier to the passage of both fire and sound through construction joints and service penetrations in concrete, aerated concrete, block work, brickwork and fire rated plasterboard. Check certification requirements or consult the relevant certifying authority before use in a fire rated application. Key Benefits