This is my first RV. I have never coated an RV roof before, and having a shop do it seemed too expensive. Your product is not cheap, but I put a gallon on the edges and cut in the roof vents last weekend, so I got another 4 gallons today to do the rest this weekend. It has not been hard, I am hoping the longevity of the product will produce as advertised. I have told some of my RV friends about it and now they seem interested when they go to seal their roofs. Your videos on your sight really helped me decide, along with your responses to my email questions. One coat vs a primer and top coat was also attractive.