Through Penetration Firestopping & Acoustical Sealing
Unprotected openings in fire-rated assemblies cancel out the fire-resistance ratings of the fire separations, allowing the spread of fire, smoke, and gases (usually past the limits of the fire safety plan of a building). Unprotected openings in acoustically rated wall assemblies increase the ability of sound to transfer or reverberate from one room to another.
A penetration tested firestop is a protection system made of various components used to seal penetration openings in fire-rated wall and/or floor assemblies thereby restoring the original integrity of the assembly. An acoustical seal at a penetration helps to maintain a specific STC value of an assembly thereby minimizing the transfer of sound.