…an Acoustical Barrier is precision in cutting the thick barrier to accommodate electrical outlets and switches that are on the wall. Additionally, the exact measurements of the wall, itself, to eliminate any open spaces.
This particular acoustical barrier is made up of mass-loaded vinyl with fibers on one side. It is an 1/8” thick, and weighs about .80 lbs. per square foot. Its primary purpose is to block sound and it is used in place of green glue; another blocking material used in sound blocking.