Originally Posted by
iamsmuts
NO! The noise travels up. It just doesn't travel out. . It's kind of like magic. My first floor vibrates and shakes . . You can get away with lifting, probably, but not loud music. If you own the place, I'd pull off the drywall and seal the place up. You'll have to seal all air gaps first. Then I'd fill the bays with insulation and then work on decoupling the drywall from the joists. Put a layer of Mlv, then closed cell foam, and then drywall. (I did something like this in my car.) . . . I bet the floor above has something similar, but they didn't count on the kind of noise that you might be making unless you are in a very strange building.