How to do sound insulation on the wall? How to do the sound insulation wall?

1. Clean the wall first, treat the base layer of the wall, plaster and level it, and cut the sound insulation felt into pre-designed sizes.

2. Paste the cut sound insulation felt on the wall. Use a few points of universal glue when pasting. The sound insulation felt should be firmly attached to the wall, and the seams should overlap by at least 10mm. , seal tightly and avoid creating cavities.

3. Add light steel keels (or wooden keels) outside the sound insulation felt, use expansion bolts to install the keels on the wall, fill the keels with sound-absorbing cotton, and pay attention to the gypsum board spacing between the keels. size to avoid failure to install the gypsum board. Put another layer of sound insulation felt outside the keel. Lay drywall over the second layer of insulation felt.