What Causes High Leaks?
Almost all water seepage and leaking located high on the wall is the result of improper grading. Window wells can also factor in, corner downspouts that have been dislodged, and concrete that is pitched towards the house can also be causes...
Recommended Action: Leaks High on the Wall
- Check Exterior Grading and Drainage Flow
- Regrade the surrounding soil to maintain a pitch of 1 inch per foot extending outward from the house.
- Ensure that water is being directed away from the foundation and walls, not allowed to collect or flow toward them.
- Inspect Gutters, Downspouts, and Extensions
- Clean gutters regularly to prevent overflow near the top of the wall.
- Make sure downspouts are securely attached and discharge 6–10 feet away from the house.
- Verify that sump pump discharge lines also carry water well away from the structure.
- Examine Wall and Siding Conditions
- Look for cracks, gaps, or damaged siding or mortar joints near where the leak appears.
- Seal or repair any openings that may allow water intrusion from above grade.
- Evaluate Window Wells, Trim, and Flashing
- For leaks near windows or trim, inspect flashing, caulking, and seals to ensure they’re watertight.
- Replace deteriorated or missing materials as needed to prevent future seepage.
- Request a Professional Assessment if Leaks Persist
- If seepage continues high on the wall even after correcting grading and drainage, the source may involve above-grade water intrusion or foundation wall seepage under pressure.
- Use the Contact Us form or call (262) 218-4966 to schedule an inspection with McCoy Contractors.
The McCoy team explained everything well - easy to make a decision on the work to be done. Perfect – Courteous, friendly and perfectly done!!
Katie Mohr, Homeowner