Any reflected sound waves will further dissipate into the fiberglass absorber, and this is the only way MLV acts as an absorber. The material as manufactured (plain MLV) does not absorb sound waves; it only blocks them.

Does MLV soundproofing work?

MLV not only offers effective sound reducing abilities but is also relatively easy to apply. ... MLV sound barriers block out most everyday noises people encounter, from traffic and construction sounds to noises from by trains, buses and even aircraft. It is a cost-effective solution to a variety of noise issues.

Does Mass Loaded Vinyl absorb sound?

Often Barium Sulfate is used due to its unique properties – it is non-toxic and has a high relative density. This latter attribute of high density is what makes Mass Loaded Vinyl so effective in blocking sound. ... Absorbing sound relies heavily on the knowledge and manipulation of a sounds wavelength.