Hi,

I am using some stuff called ultratouch denim - made of recycled blue jeans (thank the ladies for their denim appetite !! ). Avoids a lot of the unpleasantness of fibreglass, and the accoustical info seems pretty good. It looks solid enough such that it would not need to be pinned in too many places to make it stay put. The last page of the brochure has some accoustical specs for the material


http://bondedlogic.com/pdf/denim-ins...n-brochure.pdf

regards -- Roger