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Was looking at my garage door as I pulled into home yesterday and noticed that the bottom panel is starting to rust slightly at the bottom. The rust looks like a small mountain range from one side to the other.

My question is: What is the best way to go about repairing this? I'm going to guess I'm looking at 3 steps

  1. Remove the rust (how do I go about doing this?)
  2. Prime/rustproof the metal
  3. Repaint the door

Has anyone done rust removal/repainting on metal before and is it even worth it? I'm basing this on the assumption that the door isn't completely rusted through. If that's the case then I'll just replace the panel and be done with it.

Aarthi
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2 Answers2

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Is the garage door made out of steel? Here is a good article on repainting rusty steel:

I think the key is to prep by washing the area and then removing as much rust as possible by scraping and then using a wire brush (or even sanding). Prime the area with Rustoleum. The topcoat should be high quality latex exterior paint.

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Milos Petrovic
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It is difficult to find a "rusty metal primer" which is intended to take a latex paint topcoat. The Rust-Oleum product shown recommends an oil-based top coat which should not be used when repainting a metal garage door. An alternate product might be Corroseal which is a rust converter and latex primer in one which can then be topcoated with a latex paint.

Doug
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