Building the wall out and leaving an air gap.
Building the wall out filling the gap with more sound proofing material.
Theres about an inch of sound proofing material on the wall already bar the chimney which I'm going to treat and block this weekend.
Building the wall out filling the gap with more sound proofing material.
Theres about an inch of sound proofing material on the wall already bar the chimney which I'm going to treat and block this weekend.
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