How to repair a garage floor damaged by concrete spalling

Written by parker hotchkiss
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How to repair a garage floor damaged by concrete spalling
Flaking, pocked concrete can spoil the look of your garage floor. (old wall image by Anton Gvozdikov from Fotolia.com)

Concrete, while a durable and versatile flooring material, is prone to surface damage over time. A common occurrence is spalling, or the flaking and pocking of concrete. Frequently varying temperatures that expand and contract the concrete, as well as chemical erosion from de-icing salts, often cause spalling. If spalling is affecting your garage floor, it's simple to repair it yourself.

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Things you need

  • Broom
  • Scrub broom
  • All-purpose cleaning solution
  • Measuring tape
  • Concrete bonding adhesive
  • Safety glasses
  • Painter's mask
  • Mixing container
  • Water
  • Self-levelling floor resurfacer mix
  • 22.5 litre (5 gallon) bucket
  • Mechanical stirring device
  • Trowel

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Instructions

  1. 1

    Clean the spalled concrete area, first with the broom to remove particulate matter, then with the all-purpose cleaner and scrub broom to ensure the surface is free of all grit and grime.

  2. 2

    Measure the affected concrete to get an idea for the area needed to be covered. This measurement ensures that you use appropriate amounts of bonding agent and concrete.

  3. 3

    Apply the bonding agent to the spalled area. Some types of bonding agents may need to be diluted, or may even have specific application directions.

  4. 4

    Mix the self-levelling floor resurfacer mix in a 22.5 litre (5 gallon) bucket, using a mechanical stirring device such as a power drill with a paddle mixer.

  5. 5

    Pour the floor resurfacer over the spalled garage floor. The resurfacer flow into pocks, cracks and flakes, but use the trowel to ensure the surface is smoothed appropriately.

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