I have a WayneDalton steel garage door. The rubber gasket and steel holder was totally rusted out and I removed it with the intent of buying a new gasket and mounting assembly. But, I discovered that the outer steel panel is rusted along the bottom edge of the bottom panel where it contacted the gasket mounting assembly and needs treatment or it will rust out and then I'll have a bigger problem.
Should I try something like Naval jelly to neutralize the rust and then spray paint some of Rustoleum's best quality paint along the inside and outside of the bottom panel, or something else? I live in the Chicago suburbs so plenty of winter snow can accumulate along the bottom of the door before I get it removed, so there is a lot of contact with moisture. I'm sure the bottom gasket assembly helped trap moisture against the panel and that is where almost all the rust is, but the new gasket assembly will also likely trap moisture in the same place so I am looking for a good seal, as much as possible anyway. \
Help and TIA,.
Bob