Basement Window Well Leaks and Mold
A window well that fills with rainwater and has no drain, or a drain that has clogged with leaves and silt, holds water directly against the basement window and the foundation wall around it. That water finds its way in through the window seal, the sill, or hairline cracks in the surrounding concrete, and it does it repeatedly, every time it rains.
Window wells are a common blind spot because the leak point is small and the visible damage shows up somewhere else, on the drywall or framing around the window, which gets blamed on the window itself rather than the well outside it. Clearing the well's drain, adding gravel for drainage, and confirming the well liner is sealed against the foundation wall usually solves it without any interior work at all.
If the interior damage is already extensive by the time this is caught, the well still has to be fixed first. Remediating the inside without correcting the well means the same water finds the same path again the next time it rains.
Common questions
How can I tell if a window well is the source of a leak?
Watch it during the next real rain. A well that fills and stays full for hours, rather than draining within an hour or so, is not managing water properly and is a likely leak source for that specific window.
Is a window well cover enough to fix this?
A clear cover helps by keeping out debris and reducing direct rainfall into the well, but it does not fix a well that has no drainage path for water that does get in from runoff or a high water table. Both often need addressing together.
Not sure what you are looking at?
Send a photo and rough measurements, or call and describe it. We will tell you whether it needs a professional.
Request a Free Inspection Call (717) 420-1964