Lots of topics on it. Use 'Red Max Pro', 'RMP' or other variances of such as a search string and you'll get enough reading for several weeks.
I used it on my coach and it came out very nice but I'm stripping it off as part of my sale preps for next year. Don't want to give the next owner something out of the ordinary to deal with.
Some owners have had very disappointing results with peeling or flaking. You have to be careful cleaning the coach or roof once applied. Strong cleaners may stripe if off unevenly. It's tool best saved as a last resort to improving the appearance of the coach. Applying isn't hard but stripping is a bear. If your coach is painted best to stay with a good quality car wax.
My rig after a wash and a recoating.
Your results may vary.