Roxul sound proofing opinion
The house is older, and the joists are 2x6,s (16" on center) and I am debating on whether to put in one layer of the Roxul stuff or two. The Safe'n'Sound stuff is only 3" thick, so I can physically fit. It's just a question of the effectiveness of $200 worth (second layer) of Roxul will make a huge difference or not.
The final ceiling will be suspended ceiling tiles.
Any thoughts on this? Will a second layer of this stuff make a huge difference?