2008 BMW M6 stock carbon fiber roof had a couple of serious rock chips in the finish. I elected to try to clear coat the CF to see how it comes out. There was a 1" diameter hole in the finish. As the body shop started flaking the chips on the edge of it away to find some solid material to stop peeling the top coating back, , it became obvious the entire surface was coming up. No, it's not an aftermarket UV treatment. This is the surface of the stock roof, on a 105K mile car.