Ok, after looking at all the products, I have a roof of a car sanded, will use the fast etch/or similar wash/rust disolver etc.(probably SEM product). After this step, what would be next coat? Have heard epoxy primer, then go to the 2K urethane after. Will be sitting in this primer coat for couple of months while working on other items, but want to stop the surface rust that is accumulating. Please let me know after the sanding off of the roofs surface rust what order you would apply products, as you may know there are still microscopic rust areas, etc.
Thanks for the input!