FLOORING

gpokluda had a good thought and i believe he was steering you in a good direction as far as finding the culprit.  Once you unwinterize, fill up your lines, and run everything one at a time: cold and hot water outlets, both sinks, as well as your toilet and with your flashlight look for signs of leakage, whether at the lines or unions or at the traps.  Also, don't forget to look at your waterpump below the sink, quite a few connections even on and around the pump, maybe a hairline split in the screen/bowl upstream of your pump or in the pump itself.  When the pump is turned on for a long period of time, does it cycle at all, with nothing is turned on?

Edited by jato - 05 Mar 2025 at 9:37am

I guess what I am finding rather strange to this point is where the damage (rot/softness is).  Its only in the main area(meaning not in the rear storage areas, under the bench seats, area where hot water heater is, etc).  It seems to be the main living area which would be the area where or was heated during cold and damp times.  My plan at this point is to see how much height I have to play with, replace with underlayment and the vinyl flooring.  Stay tuned.   

Replacing the floor on an Rpod scares the bejeebers out of me.

and i will offer my special packer chili

Once that underfloor has been compromised, I think you need to fix that before you put anything else on top of it.