I just went to mcmaster web site and I do not think I will be using the calcium silicate blanket.

A piece that is 1 inch by 36 inch is 40 bucks a foot. If I double it up to get to that 2 inches thick I now have and Harry suggested I'd need at least 20ft. OUCH didn't budget 800+ to insulate the bay.

The way it was in terms of noise was already VERY QUIET. Although I want to utilize all the latest and greatest in technology I need to use something less expensive here.