Originally Posted by MOODMAN
Have you considered that maybe it is coming in from the top of the garage door when it rains?
Spray a hose up there and have someone inside when you do. Have them watch for drips. Stand on top and spray water at the roof in that area and likewise watch.
Water can come down inside walls and then when it hits a floor will spread out.
I've been inside during big storms and after big storms and never had any water coming from the ramp door. inside floor always dry.
It's been a mystery for a few years now. three years ago I first noticed a soft spot at the side door. that year I chalked everything and even added 4" eternal bond tape to every roof seam and over the gutters.
when I opened up the RV this year I was running water for about an hour to flush the fresh tank and hot water heater. I had some water running from under my sink cabinet (where my hot water heater is) across floor to the fridge. I opened the cabinet under the sink and had a puddle. I cleaned it up and could not find any leaks. I've tried to do it again and couldn't find any leaks. I've been on four trips this year and not a drop of water under sink.
my last trip my shower started leaking inside where the hot and cold meet and the shower head hose connects. I did look on the feed side and didn't see any water leaking. I rechecked this area with the water running and found a drip. picture is above in post #6. this leaks right to the opening in the floor where the tub drain and sink drains meet and go through the floor. and the tarp lets the water travel everywhere. It only leaks when shower is on. I had the pump on all day yesterday and not a drop at the shower feed