Truck bed liner on roof

I read an article where an individual put the bed liner material on the roof and over the radius of the side down to the awning rail. It was to go on the area where the clear coat had deteriorated. He bought a kit with truck bed liner material, the material was made specifically to roll on and came in a variety of colors to closely match the color of the coach. The kit included thinner, and rollers to use. It included literally everything needed to apply it along with instructions not to use any other.. it specified two coats , the second applied shortly after the first.. the picture he included looked pretty good. He did it because his coach was about ten years old, he didn’t want to spend the money to have it done professionally. Looked like a great idea to me. My coach has had the clear coat redone and it needs to be done again. I don’t have the info on the supplier as I write this but am very tempted to try it.