Acoustic sealing is a specialized service that, while not directly a fire protection measure, often goes hand-in-hand with firestopping. It involves using specific sealants and materials to prevent sound transfer through gaps, joints, and penetrations in walls, floors, and ceilings. Many firestopping materials inherently offer good acoustic properties.

By meticulously sealing all potential pathways for sound (which are often also pathways for smoke and fire), this service contributes to both fire safety (by ensuring tight seals for smoke control) and the overall comfort and privacy within a building. It's particularly important in commercial buildings, healthcare facilities, and residential complexes to meet noise reduction standards.