Originally Posted by Nos4r2
A lot of sports/fishing boats have it. It still waterlogs-it's just a matter of how long it takes.
Think we are saying the same thing. I am not aware of any PU foam that would not get water
logged by time, and then its a "no can do" situation. The foam also might to get loose from the surfaces by time, that's not funny either.
XPS believe will not get wet like EPS or PU, but can as far as I know not be used as expendable foam( + the resin issue) so guess it has not been used in marine industry that much.