What is an egress window well?

An egress window well is the recessed, enclosed opening dug into the ground around a basement window. Wisconsin building code requires at least one egress window in any basement bedroom or finished below-grade living space. The well itself consists of metal, fiberglass, or plastic walls that extend from the foundation to grade level, creating a protected shaft around the window opening.

The well serves two critical functions. First, it provides emergency egress: if a fire or other hazard forces occupants to exit through a basement window, the well allows them to climb out safely. Second, it admits natural light into basement spaces that would otherwise be underground.

Drainage is the central concern for waterproofing. Water naturally collects in the well when it rains or when snow melts. Without proper drainage, the well becomes a holding tank against your window, increasing hydrostatic pressure and the risk of leaks into the basement. Most wells include a drain line at the base that connects to your foundation's perimeter drain system or a sump pit. Some also have a cover or grate to keep debris and leaves from accumulating and blocking drainage.

In Rock County's freeze-thaw climate, egress wells face special stress. Water that pools and freezes can expand against window frames. Proper grading around the well and functional drainage are essential to prevent foundation damage and water intrusion. Many waterproofing firms in the region specialize in basement waterproofing solutions that include well assessment and repair.