The slight cushion softens the impression each time a soundwave hits the wall, improving its soundproofing effectiveness. The MLV is available in typical rolls lengths. This will seldom coincide with exact slicing for ceiling heights. Never waste or throw out these ‘off cuts’. Audio Tests Independent mass loaded vinyl (MLV) https://massloadedvinyl36256.blogvivi.com/39360158/5-simple-statements-about-mass-loaded-vinyl-explained