My roof is beat up, I punctured holes in it, and the seam is splitting in most spots. There also seems to be two separate panels. The part of the main shell that comes up and over the sides of the bus. Then a long flimsy piece down the middle. The seams on this are leaking as well. I discover tons of water damage. These are the products I’m considering. The roof is fiberglass Has anyone used them? which do you think is the best what’s been your experience using it? Tips and things to consider Listed in order of which I prefer the most liquid roof RV roof coating Dicor RPFRC1 fiberglass roof coating flex seal liquid rubber in a can