Mass Loaded Vinyl Sound Proof Barrier, 1 lb/sqft, 1 x 8 Feet MLV Insulation Sheet, Anti Vibration Deadening Soundproofing Material

This stuff is amazing. It’s dense, flexible, and super easy to cut to size. I used it around my crawlspace dehumidifier, and it made a huge difference — you can barely hear it running now. It doesn’t absorb sound like foam does; instead, it blocks and dampens vibration, stopping sound from transferring through materials. It’s especially good at killing low-frequency hums and structural vibration rather than muffling open-air noise. The only downside: nothing wants to stick to it. Tape peels off and most glues don’t bond at all. The only thing that worked for me was contact adhesive spray. Once it’s in place though, it’s rock solid and works great.

I bought this as a sound barrier on a unused window between two rooms. It does not come sticky so you will have to find a way to install it to your area. We used caulk as glue lol, and then added some screws around to keep it in place. Super easy to install. It is the exact size of 12inch and this window was 24inchs exactly, so it was perfect! It is thick enough and high quality so you can not hear voices on the other side. I think this is worth it’s value! If you were to go up behind it and knock, you will hear a muffled knock, but voices and music are tapped out, which is what I was looking for!!

I put these in an HVAC closet to dampen sound, they worked fine for what they are but they don’t work miracles. There wasn’t much of a smell to deal with but they did have a powdery residue on them. They’re pretty hefty and can be tricky to work. Overall they’re a good value if you need some light sound proofing. If you need anything more robust you’ll have to get much more mass

This mass loaded vinyl is incredibly dense and heavy, which is exactly what you need to actually block sound rather than just muffle echoes. I used it to line a noisy equipment cabinet, and while it was a bit of a workout to cut and install due to the weight, the drop in noise transmission was immediately noticeable.

The vinyl has a strong lasting rubber smell. Takes days to gas off.

We had to take our place down to the studs so we the opportunity to try to soundproof our mother in law rental unit from the main house. We put this in place over what were once doorways between the two units. We put it over the insulation under the drywall. We used the green tacks you can buy here on Amazon to put in place. We then used green goo sealant on the drywall. It absolutely shut down the sound, which has been an issue in the past. Its heavy but very easy to cut to size with scissors or a utility knife. We are also using in a bathroom adjacent to the other unit which has sound issues. It might seem expensive but it's actually a very cost effective way to soundproof or drastically cut sound. We used Rockwool Safe and Sound insulation, another great product for reducing sound in a home or office. You can get the insulation at Home Depot or Lowe's.

This is not mass loaded vinyl it’s mass cheap crap and yes it is cheap but that old saying is you get what you pay for. So don’t be cheap like me you’ll just end up spending more

This works good as a fairly inexpensive way to cut down on noise passing through walls. I installed it against existing 1/2 inch drywall, used UberQuite MLV Nails to secure it and Marvel Mute MLV tape for the seams. After that, I installed 5/8 inch drywall to close it out. This is a heavy product, use a minimum of two people. How do I know it works: While my wife and I were doing the TV install, passing wires through, and working from the other room, we had to raise our voices in order to communicate.

It is a bit early to find out if it does what it is meant to do, but I can say now that is that I am going to need quite a lot more for my requirements. I should have checked the measurements of the product more carefully! It is going to cost me a lot of money. I am going to look for substitutes as I won't be able to afford more of this.

I have used a few rolls of this in a 2024 RAV4. It does work to diminish sound transmission.

It's very good... no it's REALLY GOOD it works so well as a sound barrier these guys definitely know how to make good soundproofing BUT... I supposed trade-off quality is its price because you're not really getting much hopefully they do bundles in the future or sell larger quantities and give a bit more instructions on what you do with the back of it do you peel it off? As personally I have no clue what you do with the back are you supposed to peel it off or leave it???

ideal product if you have the time to do it yourself . finding a car available installer who does want to upsell you nonsense and tell you audio taste isnt a personal thing is a much bigger challenge

Easy to install with carpenter's staples. I used to reduce noise from neighbour heat pump. I added the following. First attempt: sonopan + 2 x 3/8 inch gyps: was not enough + messy with plaster, paint, etc. Then I added some more: 1/4 inch aspenite, the MLV (mass loaded vinyl), 1/4 MDF and imitation 1/8 wood to finish. Overall, it reduced significantly the disturbing noise. I am quite satisfied and I do not loose too much space. Addition of bricks outside the house was very, very expensive.