Ok now what type of problem if any does the plumbing that seems to go thru the underneath storage places in most models pose? DH thinks that it is the craziest thing cause he is afraid while traveling...
I had a plastic elbow in the floor break. This elbow was exactly the same thickness as the floor so no room for insulation. I don't know if it froze or broke because it was part of a 12 foot long glued together inflexible pipe extending down from the sink across the motorhome floor to the grey tank. I had to cut a large opening in the floor sheeting above and in the metal skin below to work on it. Lucky I started at the right spot.