This is a really old thread but for me yes the peel and seal worked well to dampen the vibration of the metal to make the car quieter. One thing most people against asphalt based products is that the factory black sound deadener that GM used under the carpet is asphalt based. I put the reproduction version back in my Chevelle wagon along with peel and seal, foil faced jute and mass backed carpeting. It is quiet and comfortable with no odor. The road heat and noise are kept out and the AC works well on low to keep the entire wagon interior comfortable.