How Do I Seal a Swimming Pool Crack Where the Coping Meets the Concrete Deck?

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Swimming pool coping is the top part of the pool's edge that meets the deck. The types of coping include concrete, stone and tile. When the coping on a swimming pool wears or cracks, the coping needs to be sealed to prevent future damage. It is very important to seal the crack as soon as it appears.

Things You'll Need

  • Liquid dish soap with degreaser
  • Bowl
  • Scrub brush
  • Bag of concrete
  • Water
  • 5-gallon bucket
  • Mixing stick or drill with mixing attachment
  • Spackling knife
  • Towel
  • Epoxy sealant
  • Paintbrush
  • Check the weather and make sure no rain is in the forecast. The concrete will need to have dry weather to seal the crack. If it starts to rain unexpectedly, cover the crack with a tarp or umbrella.

  • Remove any debris from inside and around the crack. Mix hot water with 2 to 3 teaspoons of the dish soap in a bowl. Scrub the crack with the brush. Remove any dirt or grime from the crack.

  • Rinse the crack with plain water and let it dry. The coping must be dry for the concrete to fill the crack.

  • Mix a small amount of concrete in the 5-gallon bucket. The bag should give you instructions on how much water to mix with the cement. The concrete will need to be mixed often to keep it from drying in the bucket. Use the spackling knife to scoop up the concrete and place it in the crack. Fill the crack with as much concrete as possible. Concrete will shrink 15 percent after drying. Use the towel to remove any excess concrete that spills over. Let the concrete dry.

  • Inspect the crack and make sure it is completely filed with concrete; if it is not, repeat step 4.

  • Seal the concrete with the epoxy sealant. Pour a small amount onto the crack and spread it evenly with a paintbrush. Cover the entire area of the crack with the sealant and let it dry.

  • Test the patch. Pour a small amount of water onto the cracked area. If the water sits on of the epoxy or rolls down the side the crack is sealed. However, if the water goes down into the crack it is not completely sealed and another layer of epoxy is needed. Dry the epoxy and apply another layer. Two or three tests may be needed before the crack is completely patched.

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  • Photo Credit swimming pool image by apeschi from Fotolia.com
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