finishing up my growroom- deciding which board to put on walls- i have been considering 5/8" foam board skinned in foil- r value of 5- or 1/2" black board it was called celotex at one time- which of these would be best sound insulator-i know the black board has good accoustical values- will the foam board cause an echo- wanting to keep noise level inside down on the outside
littlemountain Reviewed by littlemountain on . grow room wallboard r-value and accoustics finishing up my growroom- deciding which board to put on walls- i have been considering 5/8" foam board skinned in foil- r value of 5- or 1/2" black board it was called celotex at one time- which of these would be best sound insulator-i know the black board has good accoustical values- will the foam board cause an echo- wanting to keep noise level inside down on the outside Rating: 5