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This has a lot of uses beyond car applications. I used a sheet of it on the drywall behind in-wall speakers to cut the amount of sound radiating through the back wall and tighten the sound. I used a sheet of it inside a computer case, to eliminate a tinny rattle that came from the case vibration while it was on. You can even put pieces of it on the inside of washing machine or dryer panels to make them quieter.

It does have one drawback, and that’s the fact that once you stick it on something, you will not be able to get it off without making a big mess. It is essentially tar with a foil outer cover, and trying to get it off just leaves a bunch of sticky tar behind. So, choose the place you want it carefully before sticking it down!
Rating: 5 / 5

This was my first experience with the “Xtreme” version of the Dynamat product, and I’m very happy with the end result. I’d used the original Dynamat when it first came out and, even though it worked really well at sound deadening, it had a funky smell like asphalt roofing tiles. The newer stuff is more rubberized, apparently, and doesn’t make my truck smell like a highway surfacing project. The metal backing also made application neater because it helped to conform the material around bumps and corners without tearing.

I didn’t use a heat gun or a hair dryer, I just left my cut sheets out in direct sunlight for a few minutes before removing the backing and applying. I’ve also seen people who use a combination of a space heater and their garage floor for the part of the process where you make the Dynamat warm enough to be pliable.

Good idea to be really careful when applying the metal lined sound deadening material though, or possibly wear some light gloves, because the edges of your cuts can be sharp.
Rating: 5 / 5

I bought this to use on the bottom of my cheap stainless sinks to deaden that tinny sound from the running water. It worked great for this use, I highly recommend it!
Rating: 5 / 5