TroyStudio Mass Loaded Vinyl Sound Proof Barrier, 1.25 Ibs/sqft, 1 x 8 Feet MLV Insulation Sheet, Anti Vibration Deadening Soundproofing Material (1/8'' thick, 1 x 8 feet) (TS-US-mlv3-M)

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.

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