Finally getting a contractor to put the walls up in my workshop. I've been looking at a variety of techniques for soundproofing the walls (it's an interior wall to my garage, the exterior walls are cinderblock and aren't being done now. There will be a double outside rated entry door from the garage to the workshop.
Been Googling like crazy, but getting conflicting information.
1.) What's more effective - a double 5/8" drywall with Green glue noiseproofing compound between the sheets, or a layer of MLV (mass loaded vinyl). The more I look, the more conflicting answers I get for that. I've been seeing that the Green glue is cheaper AND more effective, but then other sites say the exact opposite.
2.) I need insulation in the wall (air conditioned space in Florida), so was planning on putting insulation in the walls. Is Roxul better than just putting normal R38 or R39 pink fiberglass insulation in the walls? Is there a better material for insulation that I should use? It appears that Roxul is 24" width, so I'm concerned about a ton of waste with studs 16" on center.
4.) Also, it appears that anything nailed into the stud on the double sheetrock side defeats the purpose on the double wall and greenglue. Should I place the double wall on the garage side of the studs instead of the workshop side?
Anyway, thanks in advance for any and all advice.