# Window Well Drainage Toronto | Drains From $850 CAD

URL: https://foundationwaterproofingtoronto.ca/window-well-drainage-toronto/

verified Fast Targeted Fix

# Window Well Drainage Toronto: Basement Window Drains and Covers

Last updated: October 26, 2026

![Foundation Waterproofing Toronto crew excavating a window well and installing a vertical gravity drain](/images/maps/two-crew-members-in-branded-shirts-excavating-a-co.webp)

engineering Gravity drain tied to weeping tile, covers fitted GRAVITY DRAIN

**Foundation Waterproofing Toronto**

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 provides basement waterproofing, foundation crack repair, sump pump and backwater valve installation, and interior and exterior weeping tile systems throughout Toronto, ON, backed by 25+ years of experience under Ontario Building Code Part 9.

Foundation Waterproofing Toronto installs window well drainage across Toronto and the GTA: a vertical gravity drain that connects the window well to the foundation weeping tile, clear drainage gravel, and a polycarbonate cover so water no longer collects against a basement window. Backed by 25+ years of foundation waterproofing experience, it is one of the least expensive basement waterproofing repairs we quote, and on many Toronto homes it is the entire fix for a leak that looked much worse than it was.

payments Scope CAD cost anchor

Window well drainage runs $850 to $2,500 CAD per well installed (2026 pricing). A polycarbonate safety cover alone is $250 to $600 CAD. Grading and surface water diversion around the well is quoted separately from $400 CAD. The in-home inspection is free.

-   check\_circle 25+ years experience
-   check\_circle OBC Part 9 compliant
-   check\_circle Free in-home inspection
-   check\_circle written workmanship warranty

calendar\_month Book Free In-Home Inspection

[/contact/ →](/contact/)

 

call Call (647) 254-5110

[tel:+16472545110 →](tel:+16472545110)

assignment

## Diagnostic Inspection Request

Free in-home inspection with a written diagnostic, anywhere in the Toronto GTA.

**Thanks, we have your request.** A Toronto dispatcher will call you to confirm the inspection slot.

-   workspace\_premium 25+ Years Experience
-   bolt Same-Day GTA Emergency Response
-   verified\_user Written Workmanship Warranty
-   gavel OBC Part 9 Compliant
-   savings Up to $3,400 CAD Subsidy Filed

## Why Do Window Wells Flood Toronto Basements?

A window well is a retaining structure that holds soil back from a below-grade window. It is also, by design, a container. Water that lands in it, or runs into it off the surrounding grade, has to leave somewhere, and if the only exit is over the sill then the basement is the drain.

The fix is a **vertical gravity drain pipe** running from the bottom of the well down to the foundation **connection to weeping tile**. Water entering the well drops through **clear drainage gravel aggregate**, hits the drain, and joins the 

perimeter drainage system

[/interior-weeping-tile-toronto/ →](/interior-weeping-tile-toronto/)

 instead of pooling against the window. Foundation Waterproofing Toronto treats window well drainage as part of 

basement waterproofing

[/basement-waterproofing-toronto/ →](/basement-waterproofing-toronto/)

, because the well, the weeping tile, and the sump pit all belong to the same drainage system.

## How Window Wells Silt Up and Rust Over Time

Most Toronto wells did not fail on day one. They silted.

Every storm carries fines into the well. Leaves break down into organic matter. The original gravel, if there was any, gradually fills with material that holds water rather than passing it. Ten or fifteen years in, the well bottom is effectively soil, the drain is plugged or was never there, and the first heavy spring thaw produces water at the sill. We see this most on post-war bungalows and semi-detached houses in East York, Leaside, and Etobicoke, where the original wells were set straight into the clay backfill with little or no stone.

The second failure mode is the **corrugated galvanized steel window well** itself. Steel wells rust where they sit in wet debris, the anchors into the foundation loosen, and a gap opens between the well and the wall. Water then runs directly down the foundation face behind the well, which shows up inside as a wet patch beside the window rather than at it. That is a window well installation job, not a foundation repair: a new well is anchored and sealed to the wall, and the drain goes in with it.

## Is the Window Well Causing Your Basement Leak?

This matters because a window well repair is $850 to $2,500 CAD and an interior weeping tile system is $8,000 to $18,000 CAD. The diagnostic is straightforward:

-   Water at the window sill or frame, with a dry cove joint elsewhere, points to the well.
-   Water at the floor and wall seam on multiple walls points to hydrostatic pressure.
-   Both, in the same basement, means both need fixing, and we sequence the cheaper one first where that is reasonable.
-   Staining on the wall below the window, with no staining anywhere else, is the clearest single indicator.

The Foundation Waterproofing Toronto crew checks all of it before quoting, and the written diagnostic lists every entry point found rather than the most expensive one.

## Comparing Window Well Drainage Scopes in Toronto

| Scope | Cost per well | What it addresses |
| --- | --- | --- |
| Clean out and re-gravel | $250 to $600 CAD | A silted well with a drain that is still open underneath |
| New gravity drain | $850 to $1,600 CAD | No drain, or a plugged one, connected down to the perimeter drainage |
| Well replacement with drain | $1,600 to $2,500 CAD | A rusted or pulled-away steel well plus the drain detail and a secured cover |
| Egress well and enlargement | $2,400 to $6,000 CAD | A bedroom or suite window needing a larger, deeper well to a life-safety standard |

Where the house has no weeping tile at the footing, the drain goes to a sump pit with a Zoeller or Liberty Pumps sump pump, or to a dedicated discharge. Where the wall behind the well is also taking water, the diagnostic prices exterior waterproofing for that section of wall separately, since the well is already dug out to the footing.

## How We Compare

| What you get | Typical provider | Foundation Waterproofing Toronto |
| --- | --- | --- |
| Pricing | Quoted only after a site visit | $850 to $2,500 CAD per well published on this page (2026 pricing) |
| Inspection | Paid call-out or bundled into a system quote | Free in-home inspection with a written diagnostic |
| Drain detail | Gravel dropped into the well, no outlet | Vertical gravity drain tied to weeping tile, a sump pit, or a dedicated discharge |
| Scope | Full waterproofing system proposed by default | Well repaired on its own where the cove joint is dry |
| Warranty | Unstated or verbal | Written workmanship warranty on every window well installation |

## Does the Yard Slope Toward Your Window Well?

A drain in the well solves the water that lands inside it. It does nothing about a lawn that slopes toward the house and delivers a stream to the well every time it rains.

**Positive slope away from foundation** is the standard: roughly 150 mm of fall over the first 1.8 metres out from the wall. Where the grade runs the wrong way, we correct it as part of the scope, and where a downspout discharges near a well, a common result of Toronto’s mandatory downspout disconnection, we relocate or extend it. **Surface water diversion** is the cheapest waterproofing there is, and 

French drain and yard drainage work

[/french-drain-installation-toronto/ →](/french-drain-installation-toronto/)

 intercepts runoff before it reaches the well, reducing the load on every other system you own.

## Window Well Covers: Light, Safety and Snow Load

A **polycarbonate safety window cover** does three jobs. It keeps rain, snow, and leaves out, which is what keeps the gravel voids open. It stops a person or a pet stepping into an open well. And it passes most of the daylight through, so the basement does not lose the window’s natural light.

They need to be secured properly. An unsecured cover lifts in wind and ends up in the neighbour’s yard, and one that traps snow load against the window is worse than none at all. We fit and fasten them as part of the well scope.

## Egress Window Wells for Basement Suites and Bedrooms

If the basement is a rental suite, a secondary suite, or has a bedroom, the egress window is a life-safety requirement under the Ontario Building Code, and its well is larger and deeper than a standard one. That is common in Toronto basement apartments in Scarborough and North York. Larger wells catch more water, so the drain detail is not optional. We also check that the cover fits the egress requirement and can be released from inside, because a well cover that blocks the exit defeats the point of the window.

If water is showing up at a basement window in your Toronto home, book the free in-home inspection before you commit to a drainage system. On a window well leak the fix is often measured in hundreds of dollars rather than thousands, and the written diagnostic will tell you either way, because every 

foundation waterproofing Toronto

[/ →](/)

 recommendation we make names the entry point first.

Diagnosis

## 5 Signs Your Toronto Window Well Is the Source of the Leak

Window well leaks are easy to misdiagnose as foundation failure, because the water shows up inside the basement either way. These five signs point at the well rather than the wall.

1.  01
    
    ### Water appears at the window, not the floor seam
    
    Seepage at the sill or the window frame, with a dry cove joint elsewhere, is a well problem rather than hydrostatic pressure.
    
2.  02
    
    ### The well holds standing water after rain
    
    A functioning well drains within minutes. Water sitting in the bottom an hour after the rain stops means the drain is blocked or was never installed.
    
3.  03
    
    ### The gravel has disappeared under soil
    
    Wells silt up over the years. Once fines fill the voids, the well bottom becomes a bathtub with your basement window as the overflow.
    
4.  04
    
    ### The well is full of leaves and debris
    
    Organic debris holds water against the foundation and accelerates rust on steel wells. It is also the reason most uncovered wells eventually block.
    
5.  05
    
    ### The ground slopes toward the well
    
    Negative grade funnels surface water straight into the well during every storm, which is a grading fix rather than a drainage one.
    

Our framework

## How Our Window Well Drain Installation Works, 5 Steps

Window well drainage is a one-day job per well, often less on multi-well runs where the excavation is shared.

1.  1 search
    
    ### Confirm the entry point
    
    We check the window sill, frame, and surrounding wall against the cove joint and slab so the well is confirmed as the source rather than assumed.
    
2.  2 construction
    
    ### Excavate the well
    
    Silt, old gravel, and debris come out down to drainage level, exposing the well base and the foundation wall behind it.
    
3.  3 tune
    
    ### Install the drain
    
    A vertical gravity drain pipe is set and connected to the foundation weeping tile, or to a sump pit or dedicated discharge where no tile exists.
    
4.  4 build
    
    ### Gravel and seal
    
    Clear drainage gravel goes back in, the well is reseated and sealed to the foundation wall, and the window sill detail is checked.
    
5.  5 verified
    
    ### Cover and grade
    
    A polycarbonate cover is fitted, surrounding soil is graded to slope away, and we water test the well before leaving.
    

Published CAD Pricing

## How Much Does Window Well Drainage Cost in Toronto?

Window well work is priced per well, and the variable is depth plus whether the drain can reach existing weeping tile. These are the published 2026 CAD bands, and multiple wells in one visit cost less per well because setup is shared.

### Cover Only

$250 to $600 CAD

Polycarbonate safety cover fitted to an existing well that drains adequately but fills with rain, leaves, and snow.

-   check Clear polycarbonate, natural light preserved
-   check Secured against wind lift
-   check Keeps leaves and snow out

Most requested

### Drain and Gravel

$850 to $1,600 CAD

Excavate the well, install a vertical gravity drain to the weeping tile, and backfill with clear drainage gravel.

-   check Vertical gravity drain pipe
-   check Clear drainage gravel aggregate
-   check Silt and debris removed

### Full Well Rebuild

$1,600 to $2,500 CAD

New window well installation: a corrugated galvanised steel well, anchored and sealed to the foundation, with drain, gravel, and cover.

-   check New well anchored and sealed to the wall
-   check Gravity drain and gravel
-   check Polycarbonate cover included

### Multi-Well Package

$2,400 to $6,000 CAD

Three or more wells treated in one mobilisation, common on side-by-side basement windows.

-   check Shared excavation setup
-   check Consistent drainage detail on every well
-   check Grading corrected across the full run

Where the diagnostic shows the window well is one of several entry points, we quote each item separately so you can address the cheapest cause first and see whether it solves the problem.

Straight answers

## What Toronto Homeowners Ask Before Fixing a Window Well

### Is a leaking window well really a foundation problem?

It is a water problem at the foundation, which is why we handle it. It is also one of the cheapest entry points to correct, so we rule it in or out before quoting a drainage system that costs ten times as much.

### Can I just fill the well with gravel myself?

Gravel alone helps only if the water has somewhere to go. Without a vertical drain to the weeping tile or a properly draining subsoil, gravel just fills with water more slowly. The drain is the functional part of the repair.

### Will a cover make the basement dark?

A clear polycarbonate cover passes most of the light through. It is also the single cheapest thing you can do to keep the well from silting up again, at $250 to $600 CAD against a $850 CAD minimum to dig out and re-drain a silted well.

### The last contractor said I need a full waterproofing system.

If the cove joint is dry and the water is only at the window, a full system is not the proportionate fix. The written diagnostic names the entry point, and if a $1,200 CAD well repair is what your house needs, that is what we quote. If the walls are also taking water, the diagnostic says so in writing.

Why us

## Why Toronto Homeowners Choose Us for Window Well Drainage

engineering

### 25+ Years of Foundation Waterproofing Experience

We have diagnosed enough Toronto basements to know that a window well is often blamed for wall seepage, and vice versa. Getting that right is the whole job.

receipt\_long

### Proportionate Scope

If a well drain is the fix, a well drain is the quote. We do not bundle a system around a $1,200 CAD problem.

tune

### Tied Into Real Drainage

Every gravity drain is connected to weeping tile, a sump pit, or a dedicated discharge, not dropped into a hole and hoped for.

gpp\_good

### Covers That Survive a Toronto Winter

Polycarbonate, secured against wind lift and snow load, so the well stays clear through the season that matters.

map

### Grading Included in the Diagnosis

Negative grade around a well undoes the drain. We check it, and quote the correction where it is needed.

workspace\_premium

### Written Workmanship Warranty

Issued in writing on every window well installation.

Our work

## Window Well Drainage Projects Across the GTA

Documentary photos from Toronto basements and foundation trenches. Select any image to enlarge.

 

 

Customer Feedback

## What Customers Say About Our Window Well Drainage

Verified project feedback from Toronto and GTA homeowners. Names are shortened for privacy.

format\_quote

> Water at the basement window every heavy rain, and two companies quoted us for full waterproofing. These guys dug the well, found no drain at all, installed one for $1,300 CAD, and that was the end of it.

Devon R.Bloordale

format\_quote

> Three wells along the side of the house, all silted solid. They did all three in a day with covers for about $3,900 CAD and re-graded the strip so water runs to the back yard now.

Yuki T.Thorncliffe Park

format\_quote

> The egress window in our basement suite kept flooding. New drain tied into the weeping tile plus a cover and the tenant has had a dry floor for two seasons.

Salim O.Scarborough Village

Answers

## Window Well Drainage FAQs

How much does window well drainage cost in Toronto? expand\_more

In 2026, a drain and gravel installation runs $850 to $1,600 CAD per well, a full well rebuild with cover is $1,600 to $2,500 CAD, and a cover alone is $250 to $600 CAD. Three or more wells in one visit reduces the per-well cost, and the in-home inspection is free.

Why does my window well fill with water? expand\_more

Either the well never had a drain, the drain has silted up, the gravel has filled with fines, or the surrounding ground slopes toward the well and delivers more surface water than it can shed. The excavation shows which of these it is.

Do window wells need a drain? expand\_more

Any well deeper than about 300 mm should have a vertical gravity drain connected to the foundation weeping tile. Shallow wells in free-draining sandy soil can manage without one, but most Toronto lots sit on dense clay, where an undrained well holds water against the window.

How do you unclog a window well drain? expand\_more

Scoop out leaves and the top layer of gravel, then run a garden hose into the drain opening. If the water backs up, the pipe or the weeping tile below it is plugged and needs flushing or replacing. We dig the well out to drainage level, clear or replace the vertical pipe, refill with clear stone, and water test it before we leave.

Can a window well drain be connected to weeping tile? expand\_more

Yes, and that is the standard detail. The vertical drain drops through the gravel and ties into the perimeter weeping tile so well water joins the drainage system instead of sitting against the window.

Does a window well drain need a sump pump? expand\_more

Only if the weeping tile it connects to discharges to a sump pit, which is common on Toronto homes after downspout disconnection. In that case the well water reaches the pit and the sump pump lifts it out. Where there is no tile at all, we run the drain to a sump pit or a dedicated discharge.

Are window well covers worth it? expand\_more

They are the cheapest maintenance you can buy, at $250 to $600 CAD per well. A clear polycarbonate cover keeps rain, leaves, and snow out, which keeps the gravel voids open and the drain working, and it prevents anyone stepping into the well.

Will fixing the window well stop my basement leaking? expand\_more

If the well is the only entry point, yes. If the cove joint is also wet, the well repair fixes one of two problems and the rest is a basement waterproofing or foundation repair scope. The written diagnostic lists every entry point found so you know what remains.

How long does window well drainage take to install? expand\_more

One day per well, and less per well on a multi-well run where the crew excavates several at once.

Do you replace rusted steel window wells? expand\_more

Yes. A new corrugated galvanised steel well is anchored and sealed to the foundation wall as part of the full rebuild scope, which includes the drain, gravel, and cover, for $1,600 to $2,500 CAD per well.

What gravel should be used in a window well? expand\_more

Clear drainage gravel, typically 3/4 inch clear washed stone, not pea gravel with fines and not the original silted material. Clear stone keeps voids open so water can reach the drain.

Can window well water get into an egress window? expand\_more

Yes, and it is more common on egress wells because they are deeper and larger, which means they catch more water. Egress wells need a properly connected drain as a matter of course.

### Still have a question about your basement

Book a free in-home inspection and we will answer it in writing, with the scope and the CAD price on the same page.

Book Free In-Home Inspection

[/contact/ →](/contact/)

## Related Services

Wet basements rarely have a single cause. These services are the ones most often scoped alongside this work on Toronto homes.

water\_damage

### Basement Waterproofing Toronto

Interior and exterior basement waterproofing in Toronto and the GTA for homes with hydrostatic pressure, efflorescence, or spring-thaw seepage, with a free inspection and published CAD pricing.

View details arrow\_forward

[Basement Waterproofing Toronto →](/basement-waterproofing-toronto/)

waves

### French Drain Installation Toronto

French drain installation: perforated pipe in a clear gravel trench, downspout integration, grading correction, and discharge to lot line under Ontario Building Code Part 9, relieving hydrostatic pressure at the foundation before it reaches the basement.

View details arrow\_forward

[French Drain Installation Toronto →](/french-drain-installation-toronto/)

construction

### Exterior Weeping Tile Toronto

Exterior weeping tile replacement: footing-level excavation, Delta-MS drainage board, and membrane to control water at the source.

View details arrow\_forward

[Exterior Weeping Tile Toronto →](/exterior-weeping-tile-toronto/)

![](/images/misc/two-crew-members-fitting-a-polycarbonate-safety-co.webp)

Same-Day GTA Emergency Response

## Get a written window well drainage diagnostic for your Toronto home

Book the free in-home inspection and we confirm the water source, the scope, and the CAD price in writing before anyone picks up a tool.

calendar\_month Book Free In-Home Inspection

[/contact/ →](/contact/)

 

call Call (647) 254-5110

[tel:+16472545110 →](tel:+16472545110)

-   check\_circle Free in-home inspection with a written diagnostic
-   check\_circle Published CAD pricing before any work starts
-   check\_circle OBC Part 9 compliant, WSIB registered, $2M insured