Mixing vapor barrier techniques in unvented cathedral roof and soundproof walls?

Hi all, long time reader who is starting the build of ‘soundproof’ rehearsal space in climate zone 4a.  Hoping this great community can help!I have a 10’x16′ well-built shed on… Hi all, long time reader who is starting the build of ‘soundproof’ rehearsal space in climate zone 4a.  Hoping this great community can help!I have a 10’x16′ well-built shed on…Read MoreGreenBuildingAdvisor