Dave, that's how my looking into the marine foam started.Thought about great stuff, then figured if I could by it in bulk I could get it cheaper.The Marine foam is pretty close only better than great stuff. US Composits had the 80 lb pak for $175, check out how much other places want for the same stuff (2lb density 10 gal unit) Eager Plastics wants $320, Mertons Fiberglass wants $267. I'm thinking I could fill 4 barrels per pak it comes to a little over $40 a barrel.
