During early and late season camping I have felt some cold air drafts on occasion. What I have found is that everywhere a pipe etc. passes through the floor, the area around it is left open. Is this c...
I would use Thumb Gum/Duxseal instead of spray foam. Spray foam can be real messy and may be more permanent than you would like. Duxseal is what we plumbers use for sealing all exterior penetrations to keep them weather and rodent-proof.