Hi all,
I'm in process of adding a 18" subwoofer to my 28'x36' garage. I want to add some sound proofing to the double steel 18'x9' insulated garage door. Was wondering if 0.5lb. MLV (1/16") would work better than Siless 2mm Butyl (which I think is a little less than 0.5lb/ft.)? I'd prefer the...