I saw your discussion about drip edge...
here's what I did on the toyhauler
I added a piece of aluminum flashing over the gap where the walls meet the frame across the front of the trailer, and added a plastic piece of inner corner molding (used for Masonite panels, I thnk) over the edge of the metal on the bottom down the sides.
Sorry about the blurry picture.
You might notice "Big Pink yellow" on the underside of the new floor
