Car Heat Sound Deadening Insulation Mat, - 197 Mil 6.5 Sqft Automobile Sound Deadening & Heat Insulation Material for Auto Hood Engine Roof Door and Trunk,Aluminum Foil Finish ,40 Inch x 24 Inch

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.

Works well in our 1967 Chevelle. Easy to install and helps to minimize the sound and reduce heat inside the car. Would buy again for future rebuilds.

Works well it's doing what it's supposed to do great investment

It holds well on metal parts of the car, but not on plastic parts. I had to spray extra glue. The sound insulation works well, I hope it is fireproof indeed...

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.

Truly insulates the dog house in our RV, keeps the engine heat from burning foot near the gas pedal and keeps the noise down several decibels.

The adhesive on the back isn't as sticky as advertised. May need extra glue in dips and corners or even the edges. Other than that, it was easy cutting and helped reduce heat and sound.

Quality item. Works wonderfully.