Use acoustical sealant or silicone caulk to seal around electrical boxes that serve adjacent rooms. Seal openings in the boxes, holes through studs and plates, and any openings in the drywall or ...

For many years, the common way to seal the gaps around drywall to dampen sound was with acoustical caulk. But as anyone who’s worked with this kind of sealant knows, it’s tough to apply evenly ...