Trademark Soundproofing TMS Acoustical Caulk - 1 (29oz) Tube

Used this along with sound proofing material to build boxes for my in ceiling speakers. Really helps dampen the noise in the bedrooms above my living room

Despite a little expensive it's such a wonderful product, it worked very well for the purpose, reduced the noise at least 50% ...

This caulk is pretty good quality. It works way better than I expected its nice and thick. It takes about 24 hours to dry and the smell isn’t bad at all so you don’t have to leave when you’re done which is very helpful.

It works! Dramatically reduced sound

Easily applied between water resistant Sheetrock and preexisting wall but still have audible noise from beyond application. It minimizes noise but would consider other options for complete silence.