I remember from a few years ago about REP foam sheets used in mold making plus lots of other things, it also comes in liquid form so it can be poured into cavitys, this could be good for cruiser boats which habe more dificult places to get to with sheet insulation.

I know theres spary foam but this could be cheaper, if i get the info on this stuff is there anyone interested for me to pass it on, i should have it through in a few days.
One put of mite be that it has similar fire resistance as polystyrene.


wayne