Background: My original doors were too rusty to fix, so I bought a pair (no rude comments, please;-). They are in much better shape, but I want to insure that rust cannot get started again. They were sprayed inside with a tar like coating, which thoroughly protected areas that would never rust anyway, and missed areas where it might have done some good. I've removed all of this old goo, and I'm left with original primer mostly, some bare metal, some surface rusty metal.
Question; what can I use to thoroughly coat the insides of these doors? There are areas that cannot be reached by brushing or spraying; either to prep the surface or to apply a coating. Dipping or sloshing the inside (like a gas tank) is the only way I can think of to get at the entire interior surface. The material would have to be thin enough to get into the nooks, crannies, and inaccessible areas, and sticky enough to adhere without perfect surface prep. Obviously, it doesn't have to look good, just work. Any suggestions? Rodney
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