Bests & Worsts Reviews from Amazon

Installed this in my 2007 subaru Forester. 36 sq feet is more than enough to do all the doors, the rear hatch, rear side panels, and still have some left over. On the doors, I opted to do the inside of the outer door skin as well as the inside as the inner door skin. I bought a small butane blow torch from Amazon and used it to heat up the material after lightly applying it. This improves adhesion and makes rolling it easier. You also need a small roller (get the wooden one) to apply this stuff. Cutting this is easy; use a utility knife or a pair of EMT shears. Finally, wear hand protection. I wore two layers of surgical gloves. The metal on the door skins is sharp, and this stuff is sticky and gets on your hands and clothes. You will not be able to get it off. And the better you apply it, the better it works. I was surprised at how much quieter my car is now. The Forester had absolutely no sound insulation before. Expect to spend about 2 hours per door. Road noise and noise from passing cars is reduced. This stuff works by changing the resonant frequencies of the sound waves. It is not necessary to cover 100% of the doors. 25% to 50% coverage is enough. As you work to put this on, you can tap or thump your doors to check your progress. Doors close with a solid, low frequency thump much like the door of a Lexus or BMW. There are fewer rattles than before, my stereo sounds better, and my sex life has improved. Just kidding about that last part, I don't have a sex life. However, I do notice wind noise more than before.