Inquiry (采购产品): Sounds proofing in a school I would like to know about soundproofing two classrooms. We have cinderblock walls. I think we will need a mass loaded sound barrier curtain hanging from the main roof down to the dividing wall. is that correct? We are in east cobb. Thank you Blake Cooper Drama Teacher Mt. Bethel Elem. **** Hidden Message ***** blake cooper 30068 USA Company: Mt. Bethel Elem. E-mail: blake.cooper@cobbk12.org **** Hidden Message ***** blake.cooper@cobbk12.org