Expensive product but works reasonably well when installed properly. Honestly this is as good as people say it is, if you apply it the way its supposed to be used.

The humming noise is still present but to the point that i really don't care. Google soundproofing. As for those still hearing impact noise (footfalls, etc) from above, green glue and drywall are only part of the solution.

Removed old sheetrock old insulation put roxul follow by first set of sheetrock and slept for 2 days just to see result. Also used about 1/2 case of green glue acoustical sealant on seams, top and bottom in conference room. Seal the edges and any gaps...  Read More

For all new drywall, use the heavier 5/8 sheets. Sheets rest on round non-compressible packing from hardware store and held in place with screws not into studs. Three layers is a lot of weight so knowledge of your joists/wall dead load capacity is imp...  Read More

Added two heavy drywall layers over the existing drywall. Next step apply gg another set of sheetrock, due bad odor of gg i didn't sleep in my br for 3 days.

The casing barely fits inside a large gun, and the bottom cap popped off while getting the casing prepared. I have a feeling it's the extra layer of drywall that deadens the noise more than anything. The next step is to either rip up the new pad &...  Read More

I'm dumbfounded at the positive reviews. I could kick myself for believing the hype. They should be sued into oblivion.