How to Cover Up Cracks in Concrete

Updated February 21, 2017

Resurfacing concrete to cover up cracks costs less than breaking up the entire slab and starting from scratch. When cracks are visible in concrete, it looks unattractive and worn. Resurfacing the concrete covers the cracks in your slab, or any other concrete surface, and makes it look new again. This concrete project is simple for homeowners and only uses basic materials to get the job done properly.

Apply a concrete degreaser onto the concrete surface. Allow the degreaser to soak into the surface until all stains and/or spills are softened. Follow directions on product, as amounts and soaking times vary depending upon the severity of staining.

Scrub the degreaser into the concrete further with a stiff-bristled brush. Use a pressure washer filled with clean water to remove any concrete degreaser residue.

Mix 7 parts concrete resurfacer mix from one of the 18.1kg. bags with 1 part water in a 5-gallon bucket; the total amount varies depending on the severity of the cracks. Use a pointed trowel to scoop a small amount of concrete resurfacer onto the cracks. Force the resurfacer into the cracks as much as possible with the pointed trowel.

Smooth the surface of the crack even with the surrounding concrete using the flat side of the pointed trowel. Allow the repaired areas to dry completely overnight.

Wet the concrete surface with water using the pressure washer. Remove all standing water with a long-handled squeegee.

Place 2.9 quarts water into a 5-gallon bucket. Pour 9.07kg. concrete resurfacer into the bucket, and stir the mixture with the mixing paddle attached to the power drill. Mix the bucket contents until the mixture is free of lumps and has a pourable consistency, adding more water if needed.

Pour the concrete resurfacer onto the concrete. Spread it with the long-handled squeegee. Concrete resurfacer has a 20-minute working time, so do a few small sections at a time until the entire surface is covered. Allow the mixture to set for five minutes.

Sweep a stiff-bristled broom over the concrete surface to create a non-slip surface. Allow the surface to dry for 24 hours.

Things You'll Need

  • Concrete degreaser
  • Stiff-bristled brush
  • Pressure washer
  • 2 bags concrete resurfacer mix, 18.1kg.
  • Two buckets, 5 gallon
  • Pointed trowel
  • Long-handled squeegee
  • Power drill with paddle-mixer attachment
  • Stiff-bristled broom
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About the Author

Rachel Turner has been writing professionally since 2000, focusing on gardening and home improvement topics. Her articles have appeared online at SlowTravel and in publications such as the "Arkansas Gardeners," "One Step Ahead" and "Writers Now." Turner holds a Bachelor of Arts in English from Arkansas State University.