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Double Drywall GG Question For Ya

Been through all the threads I could find on what you guys have done and recommend for double drywall with Green Glue install and I still have one question. Doesn’t it make sense to backer rod, acoustic seal AND at least skim a coat of mud into the tapered drywall edges between the layers so you have the flattest surface possible for the GG? The GG instructions say you can just seal the seams on the first coat but I’m thinking how is this GG going to get smashed down to .5mm like they say when I am overlapping these tapered valleys that are deeper than .5mm?

By slymo (Gearslutz.com)

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