Is rustoleum Rust Reformer a primer?

Is rustoleum Rust Reformer a primer? A: While Rust Reformer is designed to turn rust black and make the metal paintable, it is not designed as a primer. Use the Rust Reformer, which contains oxalic acid, to spot paint over rust spots, then prime the whole door with an oil-based exterior primer and finish with … Continue reading Is rustoleum Rust Reformer a primer?