r/DIY • u/Special-Reaction2029 • 14h ago
home improvement Sound dampening a shared bedroom wall, older semi.
I have an older semi, the shared wall between the units seems to be concrete/block and you can hear conversations. I have read the other threads regarding removing the existing wall and adding insulation/dampening. I am quite sure that in this case there is little to no cavity and they put the cement board (this build predates drywall) onto slats on the shared wall. Trying to remove this cement board is also a huge pain, as I have done so elsewhere and would like to avoid if possible. Adding a decoupled wall may be an option, but the space it would take up is a concern. I was considering green glue or a 2mm rubber layer and 5/8 inch drywall layer but I am seeing mixed opinions on that.



