As long as the stuff doesn't absorb water but I am sure Red checked that all out. It would be a butt load of buoyancy with little weight.
I been using this foam for about three years now, never seen anything like it, it's a polyurethane mix, impervious to water, set's up hard as a rock, and unbelievable Fast, the electric company here uses it to set telephone poles after a storm, because they can string wire in in 15 /20 minutes, many people use it to set wooden fence post, because it seals off water from the post so it won't rot, and they also use it to set aluminum flag poles, so I figured why not use it in an old boat. The stuff cost a little over $100 for a 4 gallon kit, 50/50 mix ratio, a 12 to 1 expantion ratio, that means if you mix a gallon of part "A" with a gallon of part "B" stir it up 40 seconds with the little stirring wheel on a drill motor that comes with the kit, pour it in a 55 gallon drum, it will expand up to 33 gallons volumn. The only thing about this stuff is, I wish it was a little slower to blow up, you only have 1 minute after you pour the two parts together to get it poured in place, not even that long in hot weather. It weighs about 10 pounds a gallon, but not near that much when it's expanded, never figured that out ? I haven't weighed an expanded piece of it, but it's not very heavy.
GRA Services Int.
5000 E. 2nd. st
Edmond, Ok. 73034
405-330-2395
Doug
