Hi, I live is a side by side Condo complex that doesn't have good sound
insulation between units. Is there any way to achieve around a 55-60
STC for the vertical walls between my unit and the other two without
having to replace the drywall with something like the QuietRock system?
I looked at Fomo Foam but can't find any reviews of it and what kind
of STC it would provide me. Thanks, Danno
There are lots of tricks depending on the specific problem. I suggest
In general you want to block air exchange. Air caries sound very well.
(Try opening your car's window as a train is going by.)
Next you want weight. Heavy things (drywall lead sheets etc.) block
You also want to prevent any direct solid connections. Stagger wall
studs or use special isolation devices to keep the sound from traveling
through the wall (remember the two cans on a string (well wire actuarially
worked) you want to break the wire).
Filling in wall cavities with sound absorbing materials acoustical
fiberglass bats) will do a little.
Point source control (special absorption material) at the source of the
sound will also help.
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