How to Soundproof a Finished Wall

Whether you want to keep outside noise from waking your baby during nap time or lock in the noise from your son's drum set, soundproofing a room will make a huge difference. While finished walls cannot be completely soundproofed, there are some measures you can take to drastically reduce the noise leaving a room. Best of all, many of these steps will also seal the room for energy efficiency.

Caulking
Curtains
Stud finder
Hand saw
Cellulose
Wall putty
Paint
Paintbrush
Drywall
Drywall screws
Drill with screwdriver bit
Texture

Instructions

- 1
  Seal off any leaks around windows with caulking. If the window is single paned, either replace with a double-paned window or hang heavy curtains in front of the window. The curtains will absorb some of the noise in the room.
- 2
  Run a stud finder across the wall and mark the studs. Cut a 2-inch diameter hole in the center of each wall cavity between the studs, roughly 8 inches from the ceiling and pump in cellulose insulation. Patch the holes and repaint the wall.
- 3
  Add an extra layer of drywall to the wall and ceiling if insulating is not enough. The drywall can be directly attached to the studs using drywall screws. You can then add texture and paint the walls.

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