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)

Works well to dampen noise from a 4" sewage drain pipe.

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.

Me funcionó excelente para insonorizar un tubo de PVC que tenía mucho ruido de agua y vibraciones. Enrollé la barrera de vinilo con masa alrededor del tubo y lo fijé bien.

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.