Concrete Spider Cracks

  • Tanya Schifone
  • October 22, 2012 8:23 pm

A concrete spider crack is different than a hairline crack. Spider cracks:

  • Won’t leak because they don’t go completely through the concrete.
  • Are very narrow cracks and are usually scattered.
  • Are typically not of structural concerned and caused from issues like shrinkage.

Spider cracks aren’t usually concerning cracks and can typically repaired by using a concrete sealer. Spider cracks are too tiny to use a crack repair kit and a sealer, like Foundation Armor concrete sealers, can react with the concrete to form a crystalline barrier between the crack within the concrete. If you aren’t sure, you can always seal your concrete and use a crack filler down in conjunction with the sealer, or later down the road.


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