Project sound insulation, Determined to get rid of some road noise Options

[GotToyota]

Alright guys, I decided to tackle a project similar to what a member on here did by getting rid of some noise with a carpeting material. I'm attempting the same thing, except with my door panels and rear panels. I went to Home Depot and bought a 6'x9' roll of carpet padding for $30, along with a can of 3M rubber and vinyl spray adhesive. I already tried to deaden the sound a bit by using some extra Dynamat I had, but it didn't help much at all. Spray the door panel on the areas where you will be placing the padding, then rip pieces to the size of your choice and place accordingly. WARNING: You might want to let these panels sit overnight, because the smell isn't too pleasant.

Pics of the materials:


Starting door panel:


Door panel finished:


After I get everything finished I'll let you guys know how well this worked. I spent $40 in materials with tax, so it would be a pretty cheap solution to getting rid of some exterior road noise. Not the prettiest solution, but I feel it should help out greatly.

-Matt

[Galcobar]

Putting the padding on the interior side of the weather barrier should be fine -- after all, this is the same area where you find wood and glued-on vinyl, the design has to keep water away. The water entering the door panel should be flowing through the inner panels of the door and kept in check by the weather barrier.