How to Patch a Large Concrete Crack

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If you have a large crack in your concrete it will require a little more work than just applying a simple concrete patch. With theses simple steps you will know how to fix a large concrete crack

Things You'll Need

  • Trowel
  • Hammer drill
  • Concrete vinyl patch
  • Vinyl concrete patch
  • Wooden float
  • You must reshape the concrete crack using a hammer drill. Chisel the concrete so the base is wider than the top of the crack. The wide base helps the concrete patch make a strong bond. Chisel out any chipped or crumbling pieces of concrete too. If you have a deep concrete crack that is deeper than ½ inch, add a bonding adhesive and let it dry overnight.

  • Mix your concrete patch according to the instructions provided on the bag. Next, use your trowel to patch the concrete crack. Only apply a depth of ¼ inch of concrete patch at a time. If you need more layers let the previous layer dry for a few days before adding more concrete patch.

  • With deep concrete cracks you will want to add some sand mix according to directions on the bag. When the concrete patch dries use a wooden float to go over the patch to match the concrete finish with the existing concrete.

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