He's not alone. The Agincourt Village Community Association (AVCA), where MacDougall is vice-president, has been calling on Metrolinx to build higher walls and use sound absorbent instead of sound ...

Soundproofing drywall can be installed over the existing drywall. While this method can help a bit, it won’t be as effective as spray foam insulation, Bennett explains.

Dear Patrick: The basic methods to soundproof an existing wall (room-to-room or outdoors) are similar to new wall construction. They are often more effective on an existing wall because the extra ...

A: Soundproofing a wall requires building a separate wall a few inches from the existing wall. Expensive but probably the best way to soundproof that wall. Reduce the flow of sound this way, and less ...

In an existing home, there is a limit to the amount of retrofit soundproofing you can do. If you have older, single paned windows, you probably can hear the birds chirping, or the next-door ...

When a noisy car drives past your house, it emits sound waves into the air outdoors. These sound waves hit the walls and windows, making them move.

If the wall is not directly under a joist, you will have to install nailing blocks between the joists on 16- or 24-inch centers.The same holds true for the side walls, which support the new wall.