I've read several places online about folks using Great Stuff spray foam to back holes being patched by body filler or fiber glass - and everyone says it will trap moisture, which I could see happening. I wonder about the Great Stuff Pond and Stone foam though. I don't want to patch holes, but would love to have something filling the void between the trunk extention turn down and the inside quarter panel. The thing about the Pond and Stone stuff is it's water/moisture proof, unlike the other stuff they make. I'm just tired of crap falling into the the corners. I'm POR-15ing or Rhino lining the entire trunk area anyways to help cover the floor I'm welding in. Maybe sealing the metal first THEN foaming it? or use the water proof stuff and paint/spray over it? Don't want to fill it with fiber glass, but guess it'd be an option too.
Input or opinion guys and gals
Input or opinion guys and gals