How to Remove Aluminum Corrosion

Written by april dowling
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How to Remove Aluminum Corrosion
Promptly repair corroded metal to prevent deterioration. (aluminium fences stacked at construction site image by DSL from Fotolia.com)

The stability, resilience and cost efficiency of aluminium make it a highly versatile metal. Aluminium is used for siding and other building materials, since it is lightweight and durable. Although the oxide layers on aluminium naturally resist corrosion, the metal is not indestructible. Exposure to aggressive environments and harsh weather conditions can cause aluminium to corrode over time. Scratched and damaged bare aluminium is especially prone to corrosion. Basic supplies can effectively remove corrosion and repair aluminium.

Skill level:
Moderately Easy

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Things you need

  • Plastic bucket
  • 2 tbsp liquid dish soap
  • Nylon scrub brush
  • Towel
  • Non-metallic scouring pad
  • Anti-corrosion metal primer
  • Paintbrush
  • Acrylic latex paint

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Instructions

  1. 1

    Fill a plastic bucket with 1 gallon of warm water. Mix 2 tbsp of liquid dish soap into the water.

  2. 2

    Dip a nylon scrub brush in the soapy solution. Scrub the corroded aluminium with the soapy brush to remove all dirt, grime and other debris.

  3. 3

    Rinse the surface with water. Thoroughly dry the affected metal with a towel.

  4. 4

    Sand the corroded spots with a non-metallic scouring pad until you reach the bare metal. Apply light pressure to the pad, and use back-and-forth motions.

  5. 5

    Rinse away the loose debris with water. Dry the area thoroughly with the towel.

  6. 6

    Apply two coats of anti-corrosion metal primer to the affected area, using a paintbrush. Allow each coat of primer to dry according to the manufacturer's directions. Rinse the paintbrush with water as the primer dries.

  7. 7

    Apply a coat of acrylic latex paint over the primer, using the paintbrush. Allow the paint to dry according to the manufacturer's directions.

Tips and warnings

  • Do not use metallic scouring pads or steel wool on aluminium, as small metal debris can cause corrosion in aluminium.

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