How to Seal Basement Floor Cracks


Concrete is a versatile and widely used material because it is relatively inexpensive and durable. In many most cases, a layer of concrete is applied to the basement of a home to act as the floor. Because the ground is constantly moving beneath the foundation of the home, the concrete surface may crack. While this is not a problem structurally, the cracks do look unappealing. You can, however, seal the cracks easily and effectively with a concrete sealant.

Things You'll Need

  • Utility knife
  • Concrete repair caulk
  • Caulking gun
  • Putty knife
  • Cut the tip of the concrete repair caulk tube at a 45-degree angle with the utility knife.

  • Insert the tube into the caulking gun and squeeze the trigger until a small amount of caulk reaches the tip of the tube.

  • Insert the tip of the caulk into the floor cracks and apply a thick bead of caulk along the length of the cracks.

  • Smooth over the repair caulk on the surface of the concrete with a putty knife. Allow the caulk repairs to dry fully for 24 hours before using the surface.

Related Searches


  • "Homeowner Basics (Black & Decker Complete Photo Guide)"; Jodie Carter; 2008
  • Photo Credit concrete image by Empath from
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