Look up your nearest roofing supply in the yellow pages and ask for "Torch Down" roofing material. It is an asphalt/rubber material very similar to Dynamat but at a fraction of the cost and thicker. It is put down on roofs by melting the back with a propane torch. It comes in small rolls for repairs and flashings. About 1/8 thick. Larger rolls come with or w/o granules. The small rolls are w/o . Buy w/o granules. Just put it down or melt the back with a propane torch to make it stick. The spray bottle stuff is not heavy enough and doesn't work as good.

I've considered the rubberized undercoating myself. I'm not sure which would be better (that or the bed liner). Post back with the results from what ever product you decide to use.

I'm looking to reduce the road noise in my wagon. I'm thinking of using the rubberized undercoating on the inside of the sheet metal in the doors.

I have had good luck reducing noise from the rear by using a fiberglass ceiling tile from Home Depot, trimming it to size, and installing it under the interior panel on the hatch.

Jeff Pierce
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'92 Mercedes 190E (my daily driver), '93 945 Turbo (a kickass family car), '53 Willys-Overland Pickup (my snow-plow truck/conversation piece)