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You would better off sandwiching an MLV (mass loaded vinyl) in a manner that allowed it to actually hang limply in an air-gap. I.e. a sandwich. 1" of oak 3/4" air-gap with the MLV and 3/4" of oak would probably do more than the same thickness of solid oak.


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Obviously, the wall can’t be made to be floppy; but the soundproofing inside the wall can be floppy. In the Science of Acoustics, we call it a “Limp Mass Barrier.” This is typically why the Mass Loaded Vinyl is instructed to be installed against the studs and then drywall over it. This allows the barrier to move in 3-Dimensional space and bleed off the ...


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