Can You Paint Over Rust?

If you paint over rust without preparing the surface, recurrence will prove inevitable. To permanently seal rust, apply a particular type of rust-inhibiting primer. Don’t use ordinary latex or oil-based primers; instead, use an iron oxide primer. Once the it is primed, you can paint rusted metal with little trouble.

    Tips & Warnings

  • You may also use zinc chromate primer to seal rust; however, this primer is highly toxic.
  • Be sure to scrape off as much rust as possible using a putty knife and/or wire brush.
  • If the metal is slick, use a rust-inhibiting metal-etching primer.

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