Causes of basement moisture problems in existing basements,
testing for source of basement moisture

The University of Minnesota has written an excellent document of "Typical Causes of Basement Moisture Problems." They also provide the solutions!

The main causes are:

  • Inadequate Grading around the house
  • Defective or missing gutters and downspouts
  • Improperly Designed Window Wells
  • Ineffective Drain Tile and Sum Pit
  • Improper Drainage with Underslab Ducts
  • Structural Cracks

Moisture Control Example

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