My thread is polluted with broken links. The horror. Lol.

Welcome back Aaron. I've been working on my own "best for less" solution for sound isolation. I'm going with,in order, 5\8 drywall on resilient channel and roxul safe and sound on all sides. My common wall will be a 2x6 plate with staggered studs and roxul woven into it. The ceiling will have 1" spray foam on bottom of upper floor and then roxul with channel and drywall. 3 of my four walls are backing onto foundation so that's a plus.

Spray foam was the way to go for me as the subfloor is 3\4 tongue and groove. Too much work to seal with caulking gun. Each plate and header will be spaced with foam\neoprene to help reduce transmission of vibration. You can of course do much more... But this plan is already adding roughly 1.5K to the cost of my build over standard building strategies ie. a bedroom.

You are more than welcome to share this thread. Many questions you may have will likely benefit us both being answered. I put this up to help and get others involved anyway. smile