Asked on Sep 21, 2020

How do I keep a heat grate from rusting??

RymeaMaura WhiteJohnavallance82


I have a heat grate that is right next to my shower. I have painted it with rustoleum twice and it still has rust spots on it. Should I repaint it and the seal it with polyurethane or is there something else I should use? Thanks

10 answers
  • Dee
    on Sep 21, 2020

    I would call Rustoleum and ask if you should use a sealer. Make sure you get all the rust off before you repaint it.

  • Cheryl A
    on Sep 21, 2020


    I have some info that can help with your rusting grate.

  • Kathy Gunter Law
    on Sep 21, 2020

    It sounds like you might not have gotten all of the rust off it originally. Make sure you remove it all with a wire brush and treat it thoroughly before priming and painting with a rust inhibitor. It wouldn't hurt to use a spray sealer afterwards for extra prevention.

  • GrandmasHouseDIY
    on Sep 21, 2020

    Hi Linda I would look into something more serious than even rustoleum. Rust is a tough thing to beat if you're not willing to constantly repainting it. I'm wondering if you could replace the grate with a new one that won't rust at all?

  • Redcatcec
    on Sep 21, 2020

    Have you considered a wood heat grate?

  • Mogie
    on Sep 22, 2020

    It is key that you use a wire brush to get as much rust off as possible. The paint needs a good surface to adhere to and being rust free is important.

  • Cindy
    on Sep 22, 2020

    Hi Linda. Begin by removing all the rust. Then wipe it down to make a clean surface. Once all rust is removed, apply a good primer (I recommend Kilz). And give it at least two coats but preferably three. It's important to let each coat dry completely before adding the next coat. These coats of Kilz will prevent any rust from coming through. After that you can paint it with color of your choice. Good luck Linda. I wish you well.

  • Johnavallance82
    on Sep 22, 2020

    Hello Linda,

    Give it a few coats of paint and don't use the shower until it is thoroughly dry!

    Open window when showering if possible to help disperse the damp or fit an electric extractor fan!

  • Maura White
    on Sep 22, 2020

    I agree to sand off rust and use a good primer!

  • Rymea
    on Sep 26, 2020

    I think I've seen plastic ones.

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