I finally got to take a long trip in my travel trailer after three years of ownership. My wife and I had a wonderful trip to Glacier National Park from Houston. Everything went well until on our way back I looked in my side view mirror and saw something flapping on the side of my trailer. I pulled over and discovered the rubber/plastic trim that covers the screw heads had come out of it’s groove where the side meets the front of the trailer. I removed the bottom screw that holds the trim and stretched it down and put the screw back in. All went well the rest of the way home. My question is, does this trim provide some kind of water seal or not.? It looks fine but I don’t want to take a chance and thought I would ask. Sorry I couldn’t get two of the pictures turned the right way. All pictures were taken after the repair.