The more research I do the more confused I get. I recently ran across a product called quietrock that is supposed to be this great sound isolation product with stc values approaching 60 or so. It has test data to apparently prove these claims, but I have recently ran into another company that says they do not recommend this material because it does not work as well as advertised and it is quite expensive. Has anyone used this material and does it do what it claims. Also, I was planing on going ahead and using sic clips with furring channel with r19 insulation, and 1lb mass loaded vinly in my ceiling. with 5/8 drywall. Will this combination do the trick? In other words. Will the people upstairs not hear my movies? Thanks for your feedback. I am really curious to find out actual user reviews for the quietrock material.
