agesilaus wrote:
I know that the pontoons on pontoon boats are made out of closed cell poly that is exposed 24 hr/day to water and they do not become water logged. I used foam panels when I built my house and the panels were stacked outside in Florida weather for months and showed no sign of water absorption. So I am very doubtful of that claim.
Boston Whaler boats have closed cell foam injected between the inner and outer "skin". After
many, many year of hard use they develop some cracks and water can get in between. They slowly "gain weight". Obviously it is water but drilling hole does not let it drain out !
