Mass loaded vinyl 2lb, vinyl barrier acts as a reflective soundproofing barrier that deadens sound waves, stifles vibrations, and muffles acoustics wherever it is installed. MLV is an excellent barrier to reduce transmission of sound and effectively reduces undesired noise. Great to use in music studios, underneath floors, on walls, in basements, and any other place noise reduction is needed. MlV noise barrier acts as a reflective barrier and reduces sound from leaving the confines of a space. When sound waves make contact with a surface, their energy causes vibration. Due to MLV’s quality of flexibility, it makes an excellent barrier from vibrations, thus preventing the transmission of sound.