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Yeah, with those gaps, that is going to be the outer layer that is most likely rattling. If you can get CCF in there it would be good, but you may want to use the ideas the other poster listed, just be careful with expanding foam as it will push metal outwards if too much is used.

Good Luck To All Entries......Contest entry is over at midnight Arizona time.

hugo r. 2 hrs 18 mins 54 secs

Nick K 3 hours 33 minutes 33 seconds.

Shane Sullivan 6 hours 21 min and 50 seconds

Final Day To Enter!!!!

a lesson was learned today.

Here's an older picture - The part with the fat mat stuff you see in this picture is where I didn't apply the great stuff foam because my wiring harnesses are in there. I still need to remove that Fat Mat and sound deaden smaller pieces in that area but I ran out of Damp Pro.

Nice man sounds good. I might try that. I do have a gap in between the trunk lid panel that's pretty big, only problem is it has my brake light harness and access running through it so kinda hard to cover that up.

Spraying a bunch of "Great Stuff Foam" from HomeDepot and THEN applying double layer of Second Skin Damp Pro really helped me with my trunk lid rattle. You spray the foam in between the lid gaps but be careful not to over spray or it dents your trunk lid surface. (Not sure if your car has gaps in between the trunk lid panel). I started with Fat Mat sound deadening in 2010... it was crap stuff and melted on me so I had to remove most of the FatMat years later... In 2012 I tried Elemental Designs eDead vse1... the foil was so thin it would easily come apart and the adhesive later was super thin. And finally, when done right... Second Skin Damp Pro! You can kinda see the yellow foam in the holes on right and left of my trunk lid in this picture: I like the way the Second Skin Audio Damp Pro looks so I probably won't even put my carpet panel back on the trunk lid. Not much rattle from the top part of my trunk lid. I was lacking some sound deadening for the rear brake light end of the trunk lid which is probably what was rattling in the video. I didn't want to cover up too many panel gaps because I need the space to replace my brake lights and other stuff when they break. I'll probably go back and cut smaller pieces to deaden that area later in the Summer.

Kess C. 5hrs 47min 15sec

congrats on the episode!! i know i will be tuned in for sure!!!!!