Soundproofing – adding drywall behind lathe for extra density
Hey GBA people,
I have a fun question regarding soundproofing.
The house is semi-detached and there is a 2×4 party wall. That needs some special attention for soundproofing. My plan is placing a 1 5/8 steel stud floating wall on my side of the party wall for decoupling and shafting. Filled with roxul safe n sound batting, MLV sheeting on the steel studs and 5/8 drywall.
Then I got sucked into an idea:
Could I place drywall caulked with acoustic sealant on the backside of the neighbours lathe to add density ? Kind of like having a double layer of drywall but one layer within the stud pays. Anybody see any problems with this?