Newmarket Basement Pros

Window Well Installation in Newmarket

Window wells fail more often than any other small-cost waterproofing item, and they're often the actual source of basement leaks people blame on their foundation. New wells, drainage repair, and leak fixes.

  • New install or drainage repair
  • Galvanized or polymer wells
  • Proper drain to weeping tile
  • Egress-compliant for finished basements

Why window wells leak (and why it's almost always the drain)

The window well around your basement window has one job: keep dirt away from the window so light and air can reach the basement. To do that job without flooding, the well needs a working drain at the bottom that connects to your weeping tile. Most original installations included that drain. Most haven't been touched in 30-50 years.

What happens over time: leaves, soil, and sediment fall into the well and gradually clog the drain. When heavy rain comes, water has nowhere to go but up the well, against the window frame, and eventually through the seal into the basement. The window itself is not the problem. The well drainage is.

What we install

New window well

For homes that never had a proper well, or where the existing well has rusted through. We excavate around the window, install a galvanized steel or polymer well rated for soil pressure, set it on a proper gravel base with a drain to weeping tile, and seal the connection to the foundation wall.

Drainage repair on existing well

For homes where the well is fine but the drain is clogged or missing. We dig out the well to the existing weeping tile, clean or install a proper drain pipe, and refill with clean gravel. The well stays. Job is faster and cheaper than full replacement.

Window well covers

Polycarbonate covers that fit your specific well dimensions. They keep leaves, snow, and rain out while letting light through. Easy-release for emergency egress. Important if you have small kids who could fall in or pets who could get stuck.

Egress-compliant wells for finished basements

Ontario Building Code requires that any bedroom in a finished basement have an egress window with a window well sized for emergency exit (specific dimensions for opening size and well clear space). If you're finishing a basement, we install code-compliant egress wells that pass inspection.

Diagnosing window well leaks

We start by inspecting the well during dry conditions: depth, drainage state, gravel base, and connection to weeping tile. Then we run a hose test - flooding the well with a hose and watching where the water goes. If water drains within a few minutes, the drain is functional. If it pools and stays, the drain is clogged or missing. If water overflows the well lip, the well is too shallow or the surrounding grade is wrong.

Most leaks we trace to wells turn out to be drain issues, not foundation issues. The cost difference between a $500 drain repair and a $7,000 interior waterproofing system is meaningful. Diagnosing correctly matters.

Call (289) 212-5404

Free on-site inspection. Honest quote.

We come out, look at the actual problem, and give you a written quote in plain language. You decide if and when to move forward.

Call (289) 212-5404

Frequently Asked Questions

How much does window well installation cost?
New window well install with drainage: $800-$2,500 per well depending on size, depth, and material. Window well drain repair (existing well, just fix the drain): $400-$900. Replace existing failed well with proper drainage: $1,200-$2,800.
Why does my window well keep filling with water?
Three main reasons: the drain at the bottom of the well is clogged or never existed, the well lacks proper gravel base, or the well is too shallow and surface water washes in over the lip. We fix all three.
Do I need a window well cover?
For wells in high-traffic areas or wells where leaves and debris accumulate: yes. Polycarbonate covers prevent debris, snow, and rainwater from filling the well while still letting light through. They are also a safety upgrade for kids and pets. Code-compliant covers are easy-release for emergency egress.
Can a leaking window well damage my foundation?
Yes. A window well that holds standing water against the foundation wall is essentially a small reservoir constantly applying hydrostatic pressure to that one spot. Over years it leads to localized seepage, mineral buildup, and eventually wall damage at the well location.
My basement window is leaking - is it the well or the window?
Could be either. Common causes: failed caulking around the window frame, a window that is no longer plumb (frame has shifted), or a well that fills with water and overflows the sill. We diagnose during the inspection. Sometimes the fix is $50 of caulk. Sometimes it is a full well rebuild.