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

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.

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.

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

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

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!!

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.