How to Clean a Rusted Cast Iron Grill


Save money and landfill space by cleaning your rusted cast iron grill rather than replacing it with one of the newer stainless-steel models. Removing the built-up grease, grime and rust will give you years of additional use from your grill. You'll find this admittedly dirty job well worth the time and effort.

Things You'll Need

  • Wire brush
  • Paint scraper
  • Painter's tape
  • Foaming degreaser
  • Medium sandpaper
  • Grease-cutting cleaner
  • Remove the grill rack, bricks and heat element (if any) from your rusted cast iron grill.

  • Using a wire brush and paint scraper, knock off any loose dirt and grime that has built up on your grill.

  • Apply painter's tape to any surfaces on your grill, such as wooden and noncasted parts, that may sustain damage from exposure to a high-strength degreaser.

  • Spray foaming degreaser on the inside and outside of your grill. Allow the degreaser to work on the surfaces for at least fifteen minutes, then wipe it---and the grease---off.

  • Scrape off any exposed rust with the wire brush, then smooth the cast iron with the sandpaper.

  • Completely clean your grill with a degreasing detergent and water, then refinish the grill with rust-inhibitive, high-temperature-tolerant primer and paint.

Tips & Warnings

  • Check restaurant supply stores for high-strength degreasing cleaners and detergent. Look for primer and paint at auto stores.
  • Use nontoxic paint and primer when refinishing your grill, or any other cooking surface.

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