Quote:
Originally Posted by mrennie
3M 04274 NVH foam.
Comes in twin tube cartridge and requires special gun. Expensive, but works well. Squirt some in between panels, press down once to make sure both panels are touching foam, then let it sit in its normal until foam sets up.
This product doesn't expand so much that it will warp panels, but I think you should get it installed before starting any block sanding.
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The big question for me is how to get it in the right spots. The holes are in the channels which are close to 1" away from the outside surface panel, that's a lot of space to fill before it gets to the deck lid. Might be able to jam a long thin nozzle in one of the holes far enough to get to an area where the lid and the bracing almost (or do) touch.
Is that the same product I would probably use for hood, roof, etc. ?