How to Create a Soundproof Room
- Remove any crown molding or baseboards on the walls. Find the two-by-fours under your existing wall with the stud finder and mark their location so you can easily find them later.
- Use a two-by-four and nail it over the two-by-four you found underneath the wall. Do this for each two-by-four in the wall so you have another frame on the outside of the wall similar to what your wallboard on the inside of the wall looks like.
- Place fiberglass insulation between the two-by-four of the frame you have just added until you have filled the space between the studs. Put a sheet of the gypsum board over the two-by-fours using wood screws.
- Put drywall mud over the seams where each sheet of the gypsum board meets, then a piece of joint tape and more drywall mud. Smooth the mud with a trowel made for applying drywall mud. Once this dries, smooth it over with sandpaper.
- Paint or wallpaper the walls in the color and design of your choice.
Things You Will Need
- Stud finder
- Drywall mud
- Joint tape
- Gypsum board
- Drywall screws
- Do not overstuff insulation in the wall or it will have the opposite effect and will not prevent sound from penetrating.