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Mass Loaded Vinyl Noise Barrier

Mass Loaded Vinyl (MLV) is a safe, non-toxic vinyl acoustic noise barrier designed to hang as a limp mass in a variety of soundproofing applications. MLV soundproofing offers an alternative to Lead at a lower price point. Our custom-designed mass loaded vinyl noise barrier is available in one or two pound per square foot density - abbreviated as MLV 1# or MLV 2#, respectively. Check out our mass loaded vinyl blog post for more information about this versatile acoustic product.

Sound Transmission Class

The industry standard unit of measure for a sound barrier material like mass loaded vinyl for wall, ceiling or floor assembly is referred to as the Sound Transmission Class (STC). A standardized test, performed in a certified, independent, soundproof lab, measures the transmission loss between a sound source (Source) and a target room (Target). Measurements are taken over a range of 6 frequency points ranging from 125Hz to 4000Hz. The sound in the Source and Target rooms is measured. The difference between the two is the transmission loss. Our mass loaded vinyl is STC rated to ensure you receive the proper soundproofing equipment for your home or office.

Soundproofing systems combine mass, isolation, absorption, and damping to achieve the sound reduction results best suited for the application. MLV noise barrier adds mass in a minimal thickness. The MLV 1# is 1/8" thick. The MLV 2# is 1/4" thick. The MLV is typically embedded behind the finished walls, floor, or ceiling materials. The performance table summarizes the STC rating for the various MLV products.

Acoustic Transmission Loss (dB)

Frequency (Hz)
125 250 500 1000 2000 4000 STC
Non-reinforced MLV 1#
16 17
21 26 31 36 26
Non-reinforced MLV 2#
19 19 27 34 38 43 32
Reinforced MLV 1#
17 18 22 27 33 37 27
MLV 1# with Closed Cell Foam, carpet underlay
13 15 23 25 33 38 27






We offer a full spec sheet of our mass loaded vinyl if you would like to compare and contrast products. For large scale projects, we have pallet quantities of MLV #1 available for purchase. If you’re not certain how much MLV you need, our helpful staff can put together a quote for you. If you have any other questions or concerns, don’t hesitate to call us at 1-866-768-6381.

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