repainting metal roof
(I apologize if this has already been covered exhaustively, I did run a few searches to no avail.)
The bay window on our ca. 1900 house is roofed with metal, I'm guessing it is some flavor of steel but I'm really not sure. There is some very light surface rust on the charcoal-grayish surface but no sign of loose material or rust-through and no leaking, thank goodness. We'd like to stave off any further deterioration for a few more years with minimal expenditure of cash and/or effort - there's just too much else to do right now! Is there any particular primer and paint we should use or is your basic Rustoleum type rusty-metal primer and paint fine?