Can I soundproof an existing wall without tearing it down? Yes, you can improve soundproofing on an existing wall. Attach an additional layer of soundproof drywall with Green Glue, or add mass-loaded ...

Dear Jim: We need to soundproof the walls between some rooms and also in a new bedroom we will be adding. What is the best way to block sound and will the same methods work for the old walls and a new ...