After sanding, spray Loctite Rust Neutralizer over the sign front and back to halt the rusting and seal in that look. It is clear. From Lowes only. Then paint your sign. Now the rust won't corrode from within. Your project turned out beautifully. It is very artistic! UPOL - is this a type of 2 part epoxy, same as their raptor bed liner paint? Does it have to be sprayed or can it be rolled/ brushed on?