Originally Posted by rick danger
When I built my house I used polyisocyanurate ridgid foam board and filled in the gaps with spray foam in 16oz. cans. I've cut it out in places and foamed it back in with out much trouble. I think it would be a much tighter mouseprooff(er) way to go. ....or just use the boards to make a skirt and put an electric heater in there.
I'm too concerned with all the wiring and pipes under the belly.
When I have to start cutting the spray foam, I don't want to have to fix the tank level sensor leads.
That's why I want to try and built it:
- as near as possible, snug fitted rigid foam panels; kinda like the way ceiling tiles install.
- an easily unbolted layer of (stainless, aluminum or painted steel) to cover, protect and keep the foam panels in place.
- Separate electrical heat is being replaced by circulating cabin air (60-70F) through the insulated area nearest the tanks.
Making sure the dump valves are inside the heated space will be important.