I used Dynamat/Eastwood acoustic mats for the first layer and then covered with aircraft grade closed cell foam as a decoupler. It is not on the road yet, but sure deadens any sound transmission through the body.
How many square feet of Dynamat and Foam did you use? Where did you get the foam?
I already purchased 50 sq/ft of FatMat MegaMat (butyl) but I have yet to install it. Actually, I did install some of it on the package tray and I did notice less of a rattle. But since my interior is gutted, EVERYTHING seems to rattle when the engine is running.
I'm hoping to get the window seals replaced this coming Monday, so I can start working on the roof by laying in the MegaMat, heat insulation and headliner.
After that, I need to order the carpet and floor insulation and I was hoping to find a material to stuff into the rear panels to protect against heat, cold, and sound.
