Local conditions

Clay soil and foundation movement

Clay-heavy soil can shrink during dry periods and swell when wet, putting changing pressure on foundations and crawl space supports.

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Crawl space foundation supports under a home

Quick answer

Clay soil and foundation movement

Clay-heavy soil can shrink during dry periods and swell when wet, putting changing pressure on foundations and crawl space supports.

What to watch

  • seasonal cracks that open and close
  • soil pulling from the foundation
  • brick cracks near corners
  • uneven floors after wet or dry swings

What to check

  • moisture changes around the foundation
  • bare soil near the home
  • drainage that keeps one side wetter than another

Why timing matters

Take photos when the symptom appears and again after weather changes. Timing can help separate drainage, humidity, drought, and structural movement clues.

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