Q&A for How to Paint a Rusty Metal Shed

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  • Question
    If I use a primer do I need to remove the rust?
    Community Answer
    Of course. Unless you'd like the primer and paint to look really ugly and shed right off in a month or two. Do it right with automotive primer and paint and you won't have to touch it again for 30 years.
  • Question
    What about applying a rubberized coating to prevent rust as opposed to a water or acrylic base paint?
    Community Answer
    I don't recommend it, they aren't very good with UV exposure. The metal just needs to be sealed, it's no different than a car's body.
  • Question
    Can I use a pressure washer?
    Community Answer
    You can, but you're adding water to cleaned areas to accelerate their re-rusting. It's best to use a power drill with a wire brush after you scrape heavier rust areas with a putty knife.
  • Question
    Do I need to remove rust from the roof of a metal shed before painting it?
    Community Answer
    Yes, you will need to remove it all before painting over those areas.
  • Question
    Do I need an aluminum primer for rusty aluminum sheds?
    Community Answer
    Aluminum doesn't rust, but any of aluminum's white chalky corrosion should be fully removed. A metal purpose primer is beneficial and should be used.
  • Question
    I painted my metal shed roof yesterday after thoroughly sanding and cleaning rust with a cleaner. Should I apply another coat of Rustoleum Paint and prime over the first coat today?
    Community Answer
    No primer is needed or at all useful. Yes, another coat of paint would be great.
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