Basement Window & Foundation Drainage

Window Well Installation

A basement window should bring light into your home, not water. Canada Waterproofers installs and replaces window wells designed to protect below-grade windows, improve drainage and maintain proper window clearance, including emergency-egress requirements where applicable.

With more than 27 years of experience and over 15,000 homes protected, our team understands that a new window well is only effective when the surrounding foundation and drainage conditions are properly addressed.

Request a Window Well Assessment | Call 416-333-5325

Serving Since 1998
Licensed & Insured
In-House Crews
BBB A+ Rated
Warranty Protection on Qualifying Systems

Water collecting inside a window well, leaking around a basement window or planning a new basement window?

We investigate the conditions before recommending an installation.

Proper window clearance
Effective drainage
Professional installation

Start With the Source

What Is a Window Well and Why Does Your Basement Need One?

A window well is an excavated space with a retaining enclosure surrounding a basement window located partly or completely below ground level. It holds soil away from the window, allows natural light into the basement and provides sufficient space for the window to open.

However, that space also becomes a collection point for rainwater, melting snow and surface runoff.

What we've learned from installing window wells across Southern Ontario: The enclosure is only one part of the installation. The more important question is often what happens to water once it reaches the bottom. A well can look perfectly installed above ground while an obstructed drain, saturated soil or ineffective weeping tile leaves water accumulating below. Our waterproofing and drainage experience allows us to assess the entire water path rather than simply replacing the visible enclosure.

What We Assess

Basement window location and surrounding ground level

Existing window well dimensions and condition

Evidence of pooling water or previous leakage

Soil conditions, grading and surface drainage

Window frame and foundation wall condition

Existing weeping tile and available drainage connections

Emergency-egress requirements where applicable

Common Symptoms

Signs You May Need Window Well Installation or Replacement

Problems around basement windows often develop before noticeable water enters the home.

Water Collecting Inside the Window Well

Standing water after rainfall or snowmelt may indicate blocked drainage, poor grading or an inadequate outlet.

Water Leaking Around the Basement Window

Moisture around the frame or sill may point to damaged seals, foundation openings or ineffective window well drainage.

Rusted or Damaged Window Well

Corroded metal, loose attachments or distorted enclosures can affect soil retention and installation stability.

Soil or Debris Filling the Well

Leaves, sediment and displaced soil can obstruct drainage and reduce window clearance.

No Window Well Around a Below-Grade Window

Where the surrounding soil is too close to the window, an appropriately sized well may be necessary.

Basement Renovation or New Egress Window

Creating a basement bedroom or replacing a window may require a larger well designed for emergency escape.

Window Well Options

Types of Window Wells for Basement Windows

The correct window well depends on the basement window, available space, foundation conditions and drainage requirements.

Galvanized Steel Window Wells

Corrugated galvanized steel provides a rigid enclosure and is available in different sizes and depths.

Composite or Plastic Window Wells

Composite and polymer wells resist rust and offer different shapes, finishes and installation configurations.

Concrete or Masonry Window Wells

Custom-built wells may suit larger openings, unusual property conditions or installations requiring specific dimensions.

Egress Window Wells

Emergency-egress wells must provide adequate clearance for the window to open and occupants to escape safely, subject to applicable building requirements.

Different Needs, Different Solutions

Does Your Basement Need a New Window Well, Better Drainage or Egress Clearance?

Not every basement window problem requires replacing the enclosure. Our assessment distinguishes drainage failures from installation and clearance problems.

Water-Management Problem

Water repeatedly pools inside the well
Gravel or drainage outlets are obstructed
Water leaks during heavy rainfall
Surrounding ground slopes toward the foundation
Existing drainage is damaged or ineffective

Possible service: Window well drainage repair, exterior drainage correction or replacement where necessary.

Installation or Clearance Problem

No well exists around the basement window
Existing enclosure is damaged or unstable
Window cannot open sufficiently
A new basement window is being installed
Emergency-egress requirements call for a different well

Possible service: New window well installation, replacement or an appropriately designed egress window well.

Why Window Wells Fail

What Causes Basement Window Wells to Flood?

A window well floods when water enters faster than it can drain. The problem may involve the enclosure, surrounding landscape or underground drainage system.

1. Blocked or Missing Drainage

Sediment, debris or an inadequate drainage outlet can leave water trapped at the bottom of the well.

2. Poor Exterior Grading

Ground sloping toward the foundation can direct additional rainwater into the window well.

3. Damaged Window Seals

Water can enter through deteriorated window seals, frames or openings around the foundation.

4. Inadequate Drainage Connections

A window well drain may discharge into soil that drains poorly or connect to an existing foundation drainage system that is no longer functioning.

A detail we pay particular attention to: Adding gravel is not the same as creating drainage. Gravel provides space for water to collect and move, but that water still needs somewhere to go. On projects involving foundation drainage, we evaluate whether an appropriate connection to the weeping tile system is available and functioning before relying on it.

Our Approach

How Our Window Well Installation Process Works

Canada Waterproofers approaches window well installation as part of the home's overall foundation water-management system, not simply an excavation and enclosure replacement.

Step 1: Inspect the Window and Surrounding Area
We examine the window, existing well, foundation wall, grading and visible water-entry patterns.
Step 2: Determine the Correct Well Size and Type
The enclosure is selected according to the window dimensions, excavation conditions, drainage requirements and applicable egress needs.
Step 3: Excavate and Prepare the Area
We carefully expose the installation area and examine the foundation for cracks, damaged surfaces or other conditions requiring attention.
Step 4: Install and Secure the Window Well
The enclosure is positioned and secured using a method appropriate for the foundation and selected material.
Step 5: Prepare the Drainage System
We install suitable drainage stone and, where appropriate, a drainage connection.
Our documented Burlington exterior waterproofing work illustrates how these components can work together. That project specified filtered weeping tile, ¾-inch clear gravel and filter fabric, with a window well drainage tube connected to the weeping tile system where required. The arrangement is selected according to the property's drainage conditions, not assumed for every installation.
Step 6: Backfill and Complete the Installation
We backfill and restore the installation area, review the enclosure's stability and check the completed drainage arrangement.

Material Options

Metal vs. Plastic Window Wells: Which Is Better?

Both materials can be suitable when properly selected and installed.

Factor	Galvanized Steel	Composite or Plastic
Durability	Strong, rigid enclosure	Depends on material and construction
Corrosion	Protective coating, but rust may develop	Generally rust-resistant
Appearance	Traditional corrugated finish	Various shapes and finishes
Best choice	Depends on site conditions and dimensions	Depends on site conditions and dimensions

From our waterproofing perspective, correct sizing, secure installation and functional drainage matter more than appearance alone. Even a premium enclosure cannot compensate for a blocked drainage outlet.

Installation Options

New Window Well Installation vs. Window Well Replacement

New Installation

A new well may be required when a below-grade basement window lacks sufficient clearance or a new window opening is planned.

New enclosure and excavation
Window-specific sizing
Drainage planning
Foundation attachment and backfilling

Replacement

Replacement may be appropriate when an existing well is corroded, unstable, undersized or damaged.

Removal of the existing enclosure
Inspection of the exposed foundation
Drainage evaluation and correction
Installation of a suitable replacement

Our approach: Before replacing a well that has flooded, we want to know whether the enclosure actually failed or whether water simply had no functional drainage route. Those are different problems, and replacing the same component may not resolve both.

Diagnose Before Repairing

Not Every Basement Window Leak Requires a New Window Well

One of our documented projects on Pitcher Place in Milton demonstrates why investigating beneath the visible problem matters. During work involving a new window well, our team discovered a substantial crack in the cinder-block foundation directly behind the installation area. The foundation required repair and waterproofing before the new window well and drainage were completed.

Simply installing the enclosure would not have addressed that underlying foundation condition.

Water is standing inside the window well → Window well drainage assessment

Water is entering around the window frame → Window sealing and water-entry investigation

Water follows a foundation crack beside the window → Foundation Crack Repair

Several areas of the foundation wall are leaking → Exterior Basement Waterproofing

Surface water collects beside the house → French Drain and Exterior Drainage Assessment

This is why Canada Waterproofers investigates both the window well and surrounding foundation before recommending a repair.

Scope Matters

When Is Window Well Installation Enough?

A Localized Installation May Be Appropriate When:

The existing enclosure is missing or damaged
Water entry is isolated to the window-well area
Surrounding foundation conditions are satisfactory
A functional drainage outlet is available
The proposed installation provides adequate clearance

Additional Work May Be Needed When:

Foundation cracks contribute to leakage
Existing weeping tile is blocked or deteriorated
Water enters elsewhere in the basement
Exterior grading directs water toward the foundation
A window opening requires structural modification

A real example from our work: At a 1950s bungalow on Cashmere Avenue in Mississauga, window well installation was part of a larger waterproofing and drainage upgrade. Our team installed new window wells with drainage connections, exterior foundation waterproofing and a sump pump system, along with grading improvements. That project illustrates why a window well sometimes needs to be considered as one component of a broader groundwater-management solution.

Recurring Window Well Problems

Why Does a Window Well Flood Again After Repair?

If water returns after a previous repair, we look at what was actually changed.

Replacing a rusted well addresses an enclosure problem. Clearing a drain addresses an obstruction. Installing a cover helps limit direct rainfall and debris. None necessarily resolves water entering through a foundation crack or a failed drainage system.

What we investigate when repairs haven't worked: Does the well fill rapidly during storms, drain slowly afterward or remain relatively dry while water still appears inside? Has a drainage tube been installed, and where does it discharge? Was the foundation inspected during the earlier work? These details help distinguish a drainage problem from a separate window or foundation leak.

Our goal is to understand why the problem returned before recommending another repair.

Installation Pricing

How Much Does Window Well Installation Cost?

In Toronto and surrounding Southern Ontario communities, general contractor estimates for window well installation range from approximately $500 to $3,800 or more per well, depending on the material, dimensions and complexity. A straightforward single-window installation may cost less than a deep well requiring extensive excavation, foundation repairs, drainage connections or egress-related work.

These are market estimates rather than fixed Canada Waterproofers prices. We assess the installation conditions before preparing a written estimate for qualifying work.

What Affects Window Well Installation Cost?

Window Dimensions

Larger or deeper wells require additional materials and excavation.

Material Selection

Steel, composite and custom-built wells have different costs.

Existing Well Removal

Damaged enclosure removal may involve additional preparation and disposal.

Excavation Conditions

Restricted access, landscaping, hard soil and buried utilities affect installation complexity.

Drainage Requirements

Connecting to suitable foundation drainage differs from installing a simple enclosure.

Egress and Permit Requirements

Emergency exits or foundation opening modifications may require additional design and approvals.

Related Foundation Repairs

Crack repair or waterproofing is assessed separately when necessary.

Request a Window Well Installation Assessment

Window Well FAQ

Window Well Installation Questions

Do all basement windows need a window well?

No. Window wells are generally used where surrounding ground would otherwise obstruct a below-grade window. Above-grade windows usually do not require one.

Does a window well prevent basement flooding?

Proper installation and drainage can reduce water accumulation around a basement window, but cannot correct unrelated foundation leaks or sewer backups.

Do I need a building permit to install a window well?

Permit requirements depend on the municipality and scope. Replacing an enclosure may differ from creating a new basement opening or emergency-egress window.

How much clearance does an egress window well need?

Ontario's 2024 Building Code generally requires at least 550 mm of clearance in front of a designated escape window, along with other applicable opening and escape requirements.

Can a window well drain connect to existing weeping tile?

Yes, where the existing system is suitable and the connection is permitted. Canada Waterproofers assesses the available drainage route before recommending this arrangement.

Should I install a metal or plastic window well?

Both can perform well. The decision depends on dimensions, site conditions, durability, appearance and product specifications.

Will a window well cover stop water leaks?

A cover can reduce direct rainfall and debris entering the well, but cannot replace functioning drainage or correct damaged window seals.

Can I install a window well myself?

Some installations appear simple, but improper excavation, drainage or foundation attachment can create expensive problems. Professional assessment is particularly important for leaking or egress windows.

How do I maintain a window well?

Remove debris, inspect for damage and check for standing water after rainfall. Repeated pooling warrants drainage investigation.

How long does window well installation take?

Canada Waterproofers' documented single-window installations indicate that a straightforward installation can often take around one day, provided excavation depth and site conditions are manageable. Larger or more complex projects take longer.

Is gravel drainage enough for a window well, or do I need a drainage pipe?

Gravel allows water to collect and move, but it does not guarantee drainage. If surrounding soil cannot absorb water effectively, an appropriate drainage connection may be necessary.

Are window well covers necessary, and which type works best?

Covers can help keep rain, snow and debris out. Clear polycarbonate covers allow daylight through, while metal grates offer different protection and ventilation. Egress covers must not obstruct emergency escape.

Is installing a window well yourself cheaper than hiring a professional?

DIY work may reduce labour costs, but drainage mistakes or improper foundation attachment can become expensive. Professional installation includes assessing conditions that may not be visible above ground.

Related Water-Management Services

Find the Right Solution for Your Basement Window

Window well installation may be one part of a broader foundation and drainage solution.

Basement Leak Repair

Identify and repair the actual source of basement water entry.

Foundation Crack Repair

Assess and repair leaking foundation cracks.

Exterior Basement Waterproofing

Address exterior foundation waterproofing and drainage conditions.

French Drain Installation

Manage groundwater and surface drainage around the property.

Need a Window Well Installed or Replaced?

Canada Waterproofers has helped protect more than 15,000 homes since 1998. Our team of 20+ experienced technicians brings more than 500 years of combined industry experience across waterproofing, drainage, plumbing and foundation water-management work.

Whether your window well floods after rain, needs replacement or is part of a basement renovation, our priority is to understand the problem and recommend the work that makes sense.

Serving homeowners across Toronto, Mississauga, Oakville, Brampton, Burlington, Hamilton and surrounding Southern Ontario communities.

Request a Window Well Assessment | 416-333-5325

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