Ira wrote:When you put ply on the underside, you're creating an environment to collect water within that floor frame. And I didn't just make this up--it's well-documented by much lesser assholes than me.
Okay--lesser assholes may now chime in.
I don't know if I qualify as a lesser or greater asshole - but I have never understood this. Why is the floor of the tear any different from the wall or ceiling? Most any tear with insulation has ply on both sides of the insulation on both the walls and the ceiling/roof. What is it that causes a construction method that no one worries about when used on walls and roof/ceilings to create an instant water tank of rot when used in the floor?
What is the source of the water?
Road spray? How can that be worse than a heavy rain on the roof or walls - both of which likely have holes in them for windows, vent fans, lights, water fill ports...
Condensation? From what I have read, most of the condensation that people report is on the roof and walls, the floor usually has a thick foam or air mattress covering most of it providing isolation.
Moisture coming up from wet grass? How can this be worse than rain or a heavy dew?
If the complaint is weight or that it is simply unnecessary that's fine, but how is it a water issue? Please help me understand
Why are there no reports of insulated sandwich walls rotting away at the bottom where all the water would collect?
Glen