[RinconVTR]

Are you certain the water is originating from the location you find it???

The floor is built as one solid peice, and the vinyl flooring is one peice. So water can easily travel around once it hits the floor.

The easiest area I have found water to come in is the fender skirts. You may want to comfirm the initial seal around the skirt is intact and not able to pull away. If it is, pull the whole skirt off, caulk the fender housing along the outside wall (where the water actually enters) then replace the skirt and caulk with a high quality RV urethane sealant.