Window well drainage problems in Calgary often start at the roofline. See where the water really comes from and when to call a gutter contractor for help.
Water pooling in a window well after a Calgary rainstorm or spring melt is one of the first signs homeowners notice when something in the exterior drainage system isn't working the way it should. The well itself is rarely where the problem begins. More often, the water that collects there traveled from somewhere else on the house first - off the roof, through a gutter, out a downspout - before it ever reached the window.
This article traces window well drainage from the roofline down: how water moves off an asphalt shingle or metal roof, through aluminum gutters and downspouts, and across the yard before some of it ends up sitting against a basement window. Raico Roofing installs and services the gutter and downspout side of that path. Excavating a window well, adding drainage gravel, or installing a window well cover is different trade work, handled by waterproofing and excavation contractors, and it falls outside what a roofing contractor does.
Understanding where the water actually comes from, rather than only covering the symptom, is the more useful starting point for a Calgary homeowner trying to solve a recurring window well problem.
On most Calgary properties, water reaching a window well follows one of a few predictable paths. None of them require anything unusual - just an ordinary rainstorm, a melting snowbank, or a downspout aimed the wrong direction.
Newer Calgary subdivisions generally have better lot grading than older inner-city neighbourhoods, but even a well-graded yard can send water straight into a window well if a downspout extension has been knocked off, removed for mowing, or never reinstalled after a renovation. A gutter clogged with leaves and shingle grit has the same effect - water overflows the edge nearest the window well instead of running through the downspout where it belongs. We cover the grading and downspout side of this in more detail in our article on yard drainage, grading and downspouts in Calgary.
A window well cover is designed to keep leaves, dirt and snow out of the well and to cut down on the amount of direct rainfall that falls straight into it. That part works well, and it's a reasonable step for a lot of Calgary homes.
What a cover does not do is change how much water arrives at the well from somewhere else on the property. If a downspout is still discharging two feet from the well, or spring runoff from the roof is pouring down after a hard melt, the cover will not stop that volume of water from building up underneath it or working its way around the edges and into the well below. A cover manages what falls on the well directly. It does nothing for what flows into it from the roofline, the gutter system, or the surrounding grade.
This is why a homeowner can install a window well cover, still see water in the well after the next storm, and conclude - reasonably - that the cover "didn't work." In most of these cases the cover is doing its job. The upstream water source was never addressed.
Window well drainage problems that show up only during rain or snowmelt, and stay dry otherwise, almost always trace back to the roofline. Three parts of the exterior system do most of the work here:
Gutters that are undersized, pitched incorrectly, or packed with debris will overflow at the nearest low point on the roofline - and if that low point sits above or near a window well, that's exactly where the water lands. Regular cleaning and inspection catches most of this before it becomes a recurring flood. Our guide on maintaining your gutters and downspouts covers the seasonal upkeep that prevents overflow in the first place, and our piece on aluminum gutter installation walks through sizing and pitch for Alberta climate conditions.
Professional tip: if a window well floods every time it rains hard but stays dry on calm days, trace the problem to the nearest downspout and gutter section before assuming the well itself needs more drainage gravel.
Storm damage can accelerate this too. A summer hailstorm that dents or detaches a gutter section, or wind that pulls a downspout loose, can turn a well-draining roofline into a source of window well flooding almost overnight. Workmanship on the original installation matters here - a gutter hung with the wrong slope will struggle in every storm that follows, not just the big ones.
Because window well water can come from more than one direction, it helps to separate roofline-related causes from the ones that sit below grade and belong to a different trade entirely.
| Symptom | Likely Cause | Who Handles It |
|---|---|---|
| Well fills during rain, dry otherwise | Downspout discharging too close to the well | Roofing/gutter contractor |
| Well floods during spring melt | Roof snow load melting directly onto the well | Roofing contractor (gutters/roofline) |
| Water sits in well in dry weather too | Blocked well drain or missing drainage gravel | Waterproofing/excavation contractor |
| Water tracks down the foundation wall nearby | Yard grading sloped toward the house | Grading contractor/landscaper |
The first two rows are where Raico's work applies. The bottom two sit with waterproofing, excavation and grading specialists, and a Calgary homeowner dealing with those symptoms should be talking to those trades directly rather than a roofing contractor.
For a homeowner looking at a wet window well, the practical first move is ruling the roofline in or out before spending money on anything below grade. That means checking downspout placement, gutter condition, and where roof runoff actually lands relative to the well - not guessing at what might be happening underground.
Raico Roofing handles that assessment on the aluminum gutter, downspout and fascia and soffit side of the system, including repairs after storm damage and ongoing soft metals repair and maintenance. If the assessment points to a below-grade issue instead - a saturated well base, a failed window well drain, or a waterproofing problem - that's a clear signal to bring in a waterproofing or excavation contractor rather than treating it as a gutter fix. To get the roofline and gutter side of a window well problem looked at, contact Raico Roofing and ask for a drainage and gutter assessment.
Most window well complaints have a traceable source, and that source is usually closer to the roof than homeowners expect. Start there before anything else.
A downspout extension should discharge water at least 5 to 6 feet from the foundation and well away from any window well opening. On a tight Calgary lot where that distance isn't available, a buried solid-pipe extension that carries water further out, or toward a different side of the yard, is a better fix than a short splash block right beside the well.
No. Raico Roofing handles the roofline and gutter side of water management - aluminum eavestroughs, downspouts, and fascia and soffit. Window well excavation, drainage gravel, well liners and window well cover installation are handled by waterproofing and excavation contractors, and Raico does not perform that work.
Spring melt is the most common trigger, since a heavy snowbank against the house can release a large volume of water in a short window. Summer thunderstorms are the second common cause, especially when a downpour overwhelms a gutter that hasn't been cleaned since fall.
No. A French drain or weeping tile around a window well manages groundwater and surface water at grade and below it, which is waterproofing and excavation work. Roofline drainage - gutters, downspouts and extensions - manages water before it ever reaches the ground, and both systems need to work together for a dry window well.
Contact Raico Roofing for a free quote.