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Home / Cleaning Guides / House / General Housecleaning / How to Remove Chalky Buildup from Aluminum

How to Remove Chalky Buildup from Aluminum

wroughtaluminum

Table of Contents:
  1. You Will Need
  2. Steps to Remove the Corrosion
  3. Additional Tips and Advice

Kathie asked: How do I remove chalk build up on an aluminum threshold. I’m trying to figure out what the build-up is which is destroying my sliding door threshold. It looks like candle wax. It has eaten through the threshold.

If you’ve noticed a chalky, white build up on your aluminum threshold, what you’re really seeing is corrosion. The crusty substance is literally eating away at the metal, so it’s important that you clean it as soon as possible, then, follow up with a treatment to slow down further damage. Here’s what you need to do.

You Will Need:

  • Flitz Aluminum Preclean (or another comparable product)
  • Flitz Metal Polish, Fiberglass & Paint Restorer (or another comparable product)
  • Scrub brush (not brass)
  • Broom
  • Water
  • Vacuum with nozzle
  • Paint brush

Steps to Remove the Corrosion:

  1. Before you begin, sweep away any loose dirt, dust, or debris from the threshold. This can be easily accomplished with a vacuum using attachments. Brush dirt loose with the dry paintbrush so that it can be vacuumed away more easily.
  2. Spray an ample coat of Flitz Aluminum Preclean onto the metal surface to be cleaned.
  3. Allow the spray to set on the surface for 7-10 minutes.
  4. Use the scrub brush to work away any stubborn areas of corrosion.
  5. Wipe away the spray with paper towels. Dispose of them properly.
  6. Rinse the area with clean water.
  7. Dry with a soft cloth or paper towels.
  8. Repeat if needed.
  9. The aluminum preclean product leaves a protective finish on the metal, but for the best results and greatest protection, follow up with the metal polish.

Additional Tips and Advice

  • Don’t put off this cleaning project. The more corrosion on your aluminum threshold, the more damage there will be. Although aluminum is naturally resistant to corrosion, once it happens, it can progress quickly.
  • Reapply the polish every six months to protect against further corrosion.
  • Severely damaged aluminum pieces may need to be replaced. Apply a coat of polish to new pieces to prevent the damage from reoccurring.

Cleaning Guides, General Housecleaning

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Susan

I'm a stay-at-home mom who used to run a small housecleaning business. These days I consider myself more or a mad cleaning-scientist. I do most of the testing for our articles - as well as helping Mark & Melanie write them.

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