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A small crack in your concrete driveway, patio or sidewalk may not seem like much, but ignoring it could lead to larger problems. Small crack can become large cracks if they are not fixed properly. We show you how to easily repair a crack in concrete in this DIY video from Phoenix home inspector Advantage Inspection Service.

This video tutorial covers cracks that are 1/2 inch or less at their widest point. Larger crack repair requires methods and materials not covered in this video. Select a time to do the repair when the weather is warm and rain is not likely for at least several days. Some concrete caulks may take up to a week to cure completely.

Tools & Materials Needed

  • Self leveling concrete repair caulk. Make sure the caulk is designed for concrete. Never use caulk intended for windows or door frames, or any caulk intended for indoor use.
  • Caulking gun.
  • Screwdriver or putty knife.
  • Wire brush.
  • Disposable gloves.
  • Compressor or wet/dry vacuum.

Steps To Repair Concrete Cracks

  1. Use the screwdriver or putty knife to clean any loose concrete pieces out of the crack.
  2. Use the wire brush to loosen any remaining small particles in the crack.
  3. Use an air compressor or a wet/dry vacuum to remove all the dust, dirt, small concrete particles and debris from the crack.
  4. Apply the self leveling concrete repair caulk as directed in the video and the manufacturer’s instructions. The idea is to apply the caulk so that when it cures it is slightly below the surface of the concrete. Caulk that remains above the level of the concrete will damage easily.
  5. Do not walk on the caulked crack for at least 24 hours. Do not allow pets near the repaired crack for at least a few days. If rain becomes imminent, cover the caulked crack with plastic until the rain passes.

Concrete caulk remains flexible. Use of the proper caulk assures that the repair will hold up to extremes of weather and may help prevent further damage to the concrete surface.

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