This is my first post, hopefully I'm putting it in the right place.
I've long been looking at Green Glue, have read all the data and I'm pretty much convinced it's the product I want to use. My question comes down to what your opinions would be on the best way to use it.
I own an end unit of a townhouse and I want to soundproof the shared party wall with my 1 neighbour. Just to be clear, they are not "overly" noisy, but I do hear voices at times, yelling at the TV during hockey games, and occasionally hear their TV, etc. It's not like I'm trying to soundproof their bass guitars or anything like that. It is, however, to the point where I do notice it, and I'd rather not. The party wall is double wall, regular fibreglass insulation in between, 1 layer of 1/2" dryall on each side of the wall (not much!). It's minimum code construction.
I have roughly 3 inches to work with on this shared wall (any further outwards than that and I would be on the staircase). What would everyone consider to be the best application...
1) Removing the existing 1/2" layer of drywall, adding wood strips around the top, side and bottom studs, and basically converting this wall to a staggered stud wall. Then adding two layers of 5/8" drywall with Green Glue in between.
2) Simply adding a layer of 5/8" drywall onto the existing layer of 1/2" drywall with Green Glue in between.
3) Adding a layer of 5/8" drywall over the existing 1/2" drywall, then ANOTHER layer of 5/8" drywall with Green Glue over that layer (3 total layers of drywall, 2 layers of Green Glue).
I'm leaning towards option 1, based on my research it seems like the best solution given my constraints. I just want to make sure I'm not missing anything. Option 3 also seems like it would work, but perhaps more costly.
I also realise that Green Glue isn't a miracle cure, I just want to make the most improvement possible for the least amount of money.
Thanks in advance for any advice!