Staining or Leaking in the Corners

What Causes Staining or Leaking?

Corner water leaking or staining is typically the result of clogged gutters or malfunctioning downspouts. Sometimes downspouts become disconnected during mowing or other activities in the yard. Years of neglect can result in saturated soils on the outside of the basement wall which can deteriorate the exterior coating. Concrete blocks are porous and absorb moisture from the soils. This results in a capillary staining on the interior of the basement wall. The staining in and of itself is not a problem, but rather a symptom of the problem. Staining and leaking are two different problems. If water is not able to reach the outside drain tile, then a more serious problem may exist.

What’s Next: Steps to Address Corner Seepage or Staining

1. Adjust the Ground Slope
   • Regrade the soil to create a pitch of 1 inch per foot extending outward from the house.
   • Focus especially on the affected corner, ensuring water flows away from the foundation rather than pooling near it.
2. Extend Drainage Components
   • Downspouts: Attach extensions to direct rainwater at least 6–10 feet away from the house.
   • Sump Pump Discharge: Confirm that discharge pipes release water well beyond the foundation line and not toward the corner.
3. Inspect for Settling and Re-evaluate
   • After rainfall or seasonal changes, check that the pitch remains intact and that no low spots have developed near the corner.
   • Re-grade as needed to maintain proper drainage.
4. Monitor for Continued Moisture
   • If staining or water seepage continues in the corner even after these adjustments, the issue may involve hydrostatic pressure or foundation cracks.
5. Request a Professional Evaluation
   • Use the Contact Us form or call (262) 218-4966 to schedule an inspection.
   • Our team can assess whether drain tile, sealing, or additional waterproofing measures are needed to prevent future seepage.