Last week we started looking at how to soundproof floors and this week we're going to move forward by taking a look at the most effective methods for soundproofing a wall. Walls, in our opinion, are often the easiest part of a room to work on.
When you begin thinking about soundproofing a wall, you'll find you have three main options to choose from.
The first is applicable if you are working in a new construction or if you have for some reason gutted your walls. While the walls are open, take the opportunity to stuff some fiberglass between the studs. The studs, by this point, should have already been sealed with gasket tape to prevent rubbing. Once the fiberglass is in place, install your whisper clips, making sure they are within 6 inches of the top of the ceiling and within 3 inches of the floor. If you leave more space at the top or the bottom your soundproofing efforts will not be as successful. Make sure the whisper clips are attached to the studs at the beginning and end of each row.
Your next step is to gather your soundproofing materials and run a series of hat channels through your whisper clips, using techniques similar to the ones you used when you were soundproofing the floor. Attach your first layer of drywall to the channels and seal the seams (including those around your outlets) with acoustical caulk.
Are you on a budget? Forget the work involved with using whisper clips and hat channels. Instead, nail your first layer of drywall to the studs, squirt a layer of Green Glue damping compound on top, and screw a second layer of drywall over the top. Use acoustical caulk to seal the seams, finish the room, and you're done.
There is a third option, if you have a serious soundproofing problem, and that is to combine both of the above techniques. Start by installing your whisper clips and hat channels, followed by your first layer of drywall. Apply a layer of Green Glue, install your second layer of drywall, and seal the seams with acoustical caulk. Once you finish spackling and painting the walls your project will be complete.
Any of these methods is appropriate for sound proofing a wall, and others, like the use of acoustic panels and acoustic foam, may work as well. We admit to being slightly biased towards any technique using Green Glue, but that's only because we think it is most effective and lasts longest. The choice is up to you.
