i found some cheap duct insulation stuff.. i t asys it stops vibration and is insulator.. its from home depot and review.."This product can be used in more than one fashion. We used this product to cut back on noise inside our Corvette. Corvettes are famous for having a noisey passenger compartment. Pull up carpet as well as all the other panels, and line it with this self adhesive insulation and cut back on the noisey ride by atleast 50-75%. Works wonders!!!!!" its 12 by 15 for only 15 bucks! look up thermwell on homedepot.com
If it's the aluminum bubble wrap with adhesive on the other side.. it WONT work. My buddy and I have both tried it and it's crap.. does nothing for the rattling as well as nothing for sound deadening.
