Re: Roof Help!!!!!
If you're going to paint the roof then I would sand out the rust spots, lay some primer to keep it from coming back, and then rhino line it.
Rustoleum will slow down rust, but it won't stop it and it will eventually become a big rust spot under the rhino lining. If it's going to be covered with rhino lining, it doesn't hurt to sand the rust out to remove it.