Check out the following site about using roofing type self-stick flashing that the owners stuck in their cars and how sorry they were in doing it.http://www.mobilesoundscience.com/Go to the Forum: Sound Deadening ScienceThen start reading "Why Not Asphalt?" for starters
Interesting. I bought a new '93 Ford Escort wagon. A friend had a '92 or '93 Ford Escort notch back. His was noticeably quieter than mine. He attributed it to the asphalt undercoating. I went ahead and had the dealer add it (sadly, because I hadn't done it as part of the negotiating process in buying the car, I lost leverage on getting the price down). It didn't help a damn bit.That was the first and last car I ever had undercoated.
1997 Civic EX sedan w/auto trans2001 Accord EX sedan w/5-spd manual2009 Vibe 2.4L w/5-spd manual, sunroof, monsoon, GT spoiler, Magnaflow muffler and rolled SS tip, lowered on H-Tech springs, window tint, debadged (save the red arrow!).
Quote, originally posted by Kincaid »Interesting. I bought a new '93 Ford Escort wagon. A friend had a '92 or '93 Ford Escort notch back. His was noticeably quieter than mine. He attributed it to the asphalt undercoating. I went ahead and had the dealer add it (sadly, because I hadn't done it as part of the negotiating process in buying the car, I lost leverage on getting the price down). It didn't help a damn bit.That was the first and last car I ever had undercoated.Yes, but those in that forum were sticking the "dynamat substitute" to the interior surfaces. I sprayed 3M prof. undercoating to my plastic wheelwell liners and it mainly suppressed the stone noises. It did changed the tin plastic sheet sound to a dull sound.