Tips/ Tricks for sound proofing

i put it on the back of my door panels... two layers most of it actually.. helped alot

i ususally just stuff paper towels behind whatever is rattling, as long as it wont get wet. pretty much anything to prevent the two surfaces from touching during vibration...

What did you do about where the panels meet? Or did that much dynamat not let the panel vibrate at all so no noise?

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on my ride the dynamat definately helped, but the build quality of the doors and overall car was surprisingly good so i don't have a ton of rattles... the trunk was another story. i used towels and paper towels if i could get them to stay to separate surfaces, and will be going back later with some expanding foam as well (this is for metal to metal) as far as plastic surfaces i just put anything to make a spacer so the two don't touch, but on the plastic panels that can be tricky to do if the xmas tree plastic fittings that keep the panel on aren't holding... it's mostly been trial and error...

rattles ****...

my bad, I quoted the wrong person.

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my bad, responded to the wrongly quoted quote...

Stick on rubber weather stripping?

Foam mounting tape or vinyl tape.