How to Soundproof a Room Inexpensively

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Soundproofing a room entails noise absorption and noise blocking. Soundproofing enables recording studios and movie sets to record without background noise or interference. Soundproofing can also help light sleepers rest without being disturbed. A garage can be soundproofed to avoid nasty calls from irate neighbors when your son takes up drumming. Whether you are trying to keep the noise in or out, soundproofing can help you keep the peace within your home.

Step 1

Replace the interior hollow core door with a solid door. Use medium density fiberboard, which is denser than wood and absorbs noise better. If there is a gap between the bottom of the door and the floor, attach a rubber flap called a transom seal.

Step 2

Cover the door with an acoustical drapery or a 1-inch-thick mat that completely covers the seams of the door. Hang drapery directly onto the wall. Staple it so that the staples are hidden by the draping.

Step 3

Plug the window with an acoustical mat cut to size. If light is an issue, cover the window with see-through plastic and add shutters.

Step 4

Apply thick beads of silicone caulking to walls and layer sheetrock or acoustical boards on the existing wall. Do not push the board or sheetrock flush to the existing wall; air flow between the two walls is needed to aid in noise blocking. Screw the boards to the walls, but not too tightly.

Step 5

Install plush carpeting to the floor and remove any hard-surfaced furniture. Oddly angled upholstered furniture will absorb the noise and break the sound waves as they travel through the room.

Things You'll Need

  • Solid core door

  • Acoustical drapery

  • Acoustical mats

  • Silicone caulking

  • Sheetrock/acoustical wall boards

  • Plush carpeting

  • Upholstered furniture