| Re: Green Glue, RSIC, Both? Soundproofing in General
I would recommend both for a ceiling. At least with the wall if you are not happy then you have the optin of doing the unfinished side. With the ceiling you dont get that option. Also using those two products in tandem with each other is extremelly effective. You get the best of both worlds sound isolation and sound blocking.
Dave Ingersoll 
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