Question by marie h: Is blown in insulation good as a sound proof insulation for a duplex wall?
I live in a duplex with very loud neighbors, talking loud and partying, I would like to insulate the wall for the least amount of trouble, and money if possible.
Answer by websterbackhoe
i would recommend blown in insulation as well as a seperation of the walls, you see the sound is being transferred through the 2×4 and the speaker is the wall board.
if you have the room, install another wall not touching but close to the existing wall using 2x3s.and insulate that wall as well.
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