Car Heat Sound Deadening Insulation Mat, - 197 Mil 10.8 Sqft Automobile Sound Deadening & Heat Insulation Material for Auto Hood Engine Roof Door and Trunk,40 Inch x 40Inch, Aluminum Foil Finish

Used this to quiet an old outboard motor that was too loud due to the original soundproofing being pretty much gone after many years (even the dealer can't figure out the year of this old motor). Worked great. I haven't measured the exact drop in the decible level, but it's noticeable. Easy to install with the self adhesive backing. Made a template using a paper bag, though I think cardboard would have been easier. Got it close, then dialed in the fit with a pair of utility scissors, laid it out and cut the soundproofing using the template. Double checked the fit before peeling off the adhesive cover and installing.

The original foam noise insulation mat on my 13 VW Touareg engine cover had turned dry and crumbly after almost 11 years. Several chunks were falling and tearing off. I wanted a new one. But they are NOT sold by Volkswagen, only the entire engine cover $$$. This sound mat works great. It was not hard to work with. I cleaned the engine cover, measuring the old foam insulator first and making a cardboard template. Then with a scraper and acetone, I removed the old insulation foam, and followed up with sandpaper and acetone. I cut the new insulation with a utility knife on a breadboard, and did small trim with industrial scissors. In about an hour, I had a new foam insulator, and it works. Engine noise is a little bit better than before, and it has held up to engine heat.

Rodents had started tearing apart the engine cover insulation and using it for nesting (Mazda 3). This provides good insulation that looks and works great, stays in place and doesn't provide nesting material. Would work for insulation attached to the hood as well.

Kinda expensive but it works well. I did a test with a thermal gun and recorded a 20 degree reduction on surface temperature. Test was done on the ceiling of a cargo van.

This has held up nicely. I used this as the backing to a custom made vinyl floormat I made for my 1928 Ford Model A. It is the perfect thickness and gives the mat the protection it needs. Being the underside of a floor mat, I was unsure how it would hold up, but i has. I often have to bend and move the mat, ant the adheisive has held. This was an inexpensive upgrade to the vehicle, without compromising the integrety of the car.

I needed to replace the failing fiberglass insulation that was original in my 1996 motorhome. The original insulation was providing some sound/heat protection inside of my generator cabinet but it was falling apart. After cleaning off the failing insulation and adhesive, this new insulation seemed to stick well to the interior cabinet walls. I could easily cut this insulation with my scissors but it does make the backing paper try to shred at the cut edges instead of peeling off in one motion. Just being careful I could ensure that all of the protection paper came off to allow full adhesion to the metal walls. It was fairly easy to attach and turn corners. NOTE: this item could probably be stretched to the advertised 40" x 40" but I wanted to install it in its relaxed size of 38" x 38". I had plenty to cover the inside of generator cabinet fully. It did reduce the noise some from my generator. I guess I could also install more of this insulation on the outer walls of the generator quieting down even more of the noise inside my motorhome. So far it is sticking well but if things change I will edit my review of this product.

This was the first thing I tried when I started working on the sound deadening in my car, and it’s okay, but there are higher quality products out there. Ideally, you want more than one. A layer of high density insulation over the metal to deaden resonance, followed by a layer of thicker, lower density to block external noise and insulate for temperature, and ideally, another thin layer over that, which is the sandwich many luxury vehicle brands use. If you have budget for only one thing, it’s not bad, but you can do better. Definitely make sure places like your hood are cleaned and degreased before applying it. Keep in mind that the adhesive is _pressure activated_. Don’t try and do large areas, cut it into strips and patches, make sure to press hard and use a roller. Don’t be a hero, it won’t stick in huge pieces, go slow and go for maximum pressure.

Yes it’s smaller than 40” however, it worked for our application. We purchased 2 It was not on rolls as shown on first picture. It is folded like a blanket. We purchased the thicker padding. The adhesive is strong. Easy to cut. We have not tested it for sound proofing or heat yet. I’m sure it will make a big difference. In our 49 truck.