jhbrandt
Acoustic Design
any 80-100kg/m3 rock wool will get you close.
Cheers,
John
Cheers,
John
Kingofpain678
Returned from the dead
Cool! And for all I know 50$ for 6 2x24x48 sheets is a good price! 
Jeff_D
New member
Spec sheet is here.. http://www.roxul.com/files/RX-NA-EN/pdf/RockBoard60-3-10-09.pdf
Roxul also makes a product called Roxul "Safe" - specs look -slightly- better
http://www.roxul.com/files/RX-NA-EN/pdf/RoxulSafe-5-25-09.pdf
Its typically used for fire safing/ fire stopping in commercial construction...
Even better, if you live in even a remotely populated area in America, you should have no troubling walking into a number of different local commercial building material supply houses and walking on with what you need. I know of a few places around Cincinnati that keep this stuff in stock. Look up building material supplier or metal stud suppliers or insulation suppliers in your phone book.
Roxul also makes a product called Roxul "Safe" - specs look -slightly- better
http://www.roxul.com/files/RX-NA-EN/pdf/RoxulSafe-5-25-09.pdf
Its typically used for fire safing/ fire stopping in commercial construction...
Even better, if you live in even a remotely populated area in America, you should have no troubling walking into a number of different local commercial building material supply houses and walking on with what you need. I know of a few places around Cincinnati that keep this stuff in stock. Look up building material supplier or metal stud suppliers or insulation suppliers in your phone book.