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AhaBulb: Stuff Everyone Should Know · ahabulb.com/home-downspout-4ft

How far beyond the foundation wall should downspout extensions discharge water?

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  1. At least 6 inches
  2. At least 4 feet
  3. About 1 foot

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References

  1. UMN Extension: Moisture in basements extension.umn.edu/garden-and-home/home-maintenance/caring-for-a-home/moisture-in-basements-causes-and-solutions Checked 2026-10-10.

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