Ok Mike I'll jump in I've been out working on the new trailer. PMF is house paint and bed sheet. At the first LCG there was a standy made from an old pop up trailer. They just built a box on top of the old trailer and covered it with house paint and muslin cloth.
I've used it on boxes to put camping stuff in and on the cover that is on the WW Air conditioner. The AC cover was covered with bed sheet and exterior primer than a coat of oil base paint to water seal it. The cover has been on the trailer for 3 years with no leaks or delamination problems.
I'm considering using it on the new trailer but I'm wondering how it will work with something that large since latex paint dries real fast in the heat we have right now.
Gary