Recently we bought a 2016 Rockwood Premier pop-up. It's in good shape but the roof needs a good cleaning to get off oxidized finish, dirt, tree sap etc., followed by waxing and buffing for protection from the elements. I've seen the threads on wax-buff tips but haven't seen much about cleaning using an orbital polisher/buffer like this one
. Is there a preferred type of brush or pad that would good for that kind of cleaning?