I am in the very last stages of finishing up all my fiberglass work on some rotted stringers. I will be ready this week to rebuild the floor over the rotted area in the stringers.<br /><br />What I need to know is what type of foam to put back under this floor. I had asked once before but never got an answer. I plan on having this done by next weekend so I do need to get this part ready so that later this week I will be ready to use it.<br /><br />A dumb question is would Great stuff work? Or must it be a 2 part foam? And if so which foam is the best. I want to make sure it is done right, and I don't want to loose any flotation ability just to be safe.<br /><br />Thanks,<br />Bryan