Filling cavity between two walls

Started by stelladat on 12 June 2009. 0 replies.

Originally posted at johnlsayers.com, topic 13160.

viewtopic.php?f=2&t=11644. This thread died and I'm finally back to work on basement studio. Any advice would be greatly appreciated. Looking for isolation between drum room and control room with window walls spaced 15" apart. Thanks, Stella