Asked on Dec 12, 2019

What causes concrete waterproofing cracks?



What is the reason or cause of concrete waterproofing cracks?

8 answers
  • The elements and weather. Has it been cold? What did the can or bucket say about temperature or weather conditions?

  • William
    on Dec 12, 2019

    I agree with weather conditions. Also improper prep could do it. Reaction of the sealer with cleaners used on the concrete.

  • Sharon
    on Dec 12, 2019

    You mean the sealer cracked? The concrete had too much moisture before you applied it. Run a heater to dry out, and test it with a moisture meter, check the label on the sealer for instructions or call the manufacturer for their suggested level of moisture.

  • Ken Erickson
    Ken Erickson
    on Dec 12, 2019

    Outside or inside concrete location?

  • Seth
    on Dec 13, 2019

    If you have not solved the groundwater issue outside, nothing you do inside will be permanent. In addition to what others have mentioned, continuous hydrostatic pressure from the outside will cause your concrete to wick moisture to the inside. If that water vapor is trapped behind an impermeable layer, it will eventually push the coating off. What ever you apply to the inside walls will eventually fail. It may take a few years, but you will need to reapply at some point. Start outside in terms of managing runoff, gutter extensions, grading away from your foundation, etc.

  • Linda
    on Dec 13, 2019

    How can I send this to someone thru messenger?

  • Kmdreamer
    on Dec 18, 2019

    You need certain grading for cement to have water run off

  • Kmdreamer
    on Dec 18, 2019

    When the cement isn’t waterproofed that’s when it cracks

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