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Home Waterproofing Services in Toronto
Winter prep starts now! Book a FREE basement inspection today, speak with our contractors and receive custom waterproofing solutions that will protect your Toronto home from the snow, ice and rain.
Do You Need Basement Waterproofing in Toronto?
With the average age of Toronto homes exceeding 50 years, it is likely that your basement was not built with modern waterproofing techniques that will stand up in today’s climate. Extreme rainfall is only increasing in Toronto, making it even more important to check both older and newer homes for strong defences against flooding and moisture.
If you live in a Victorian, Edwardian or Georgian home throughout the city and you have not updated your basement waterproofing solutions, then it is time to give us a ring!
Signs Of A Wet Basement:
If you notice one or more of the below tell-tale signs, then it is likely you already have moisture present in your basement:
- Musty, earthy or damp smells in your basement
- White chalky residue on walls, floors, or ceilings
- Paint is peeling or bubbling
- Basement walls are damp or cold to the touch
- Metal fixtures have turned rusty
Give DGI a call today to book your FREE basement inspection! Our local waterproofing contractors will evaluate your space and create a custom waterproofing plan that tackles your property’s unique struggles.
Basement Waterproofing Across Toronto Neighbourhoods
We work on homes across the city, from the older, established streets of Rosedale, Riverdale, and The Junction to the postwar bungalows of Scarborough, Etobicoke, and North York. Toronto’s housing stock spans everything from century-old foundations to 1960s-70s builds, and the right waterproofing fix depends on the age of the foundation and how the property is graded, not just the neighbourhood. Our free inspection identifies the actual cause before we recommend a repair.
Areas we regularly service in Toronto include: Scarborough, Etobicoke, North York, East York, Leslieville, The Beaches, Riverdale, High Park, The Junction, Rosedale, Yorkville, and the Danforth.
How Much Does It Cost To Waterproof Toronto Basements?
Our waterproofing services are priced per foot, which allows us to offer affordable basement waterproofing tailored to each property. Below, we have outlined our pricing so you know what to expect when you book with DGI.
| Service | Cost | |
|---|---|---|
| 1 | Exterior Waterproofing | $50 – $300+ per linear ft. (Cost depends on depth and access)* |
| 2 | Interior Waterproofing | $50 – $200 per linear ft.* |
| 3 | Waterproofing Foundation Cracks | $1500-$3000 (Cost depends on width and depth)* |
| 4 | Basement Waterproofing | $6 to $8 per sq. ft. (Cost depends on materials and company)* |
| 5 | Mould Remediation | $1000 – $100,000* |
| 6 | Waterproofing Newer Homes | $2.75 – $4 per sq. ft. * |
*Please note that all prices are approximate and may vary based on the specifics of a project.
What Do Our Customers Think?
Toronto’s Local Conditions
Why Waterproofing Toronto Homes Is A Necessity
- Older Homes: Over 135,000 single and semi-detached homes in Toronto were built before 1946, these rely on older foundations and drainage that are structurally weak against modern floods.
- Intense Flash Flooding: Due to climate change, Toronto is now frequently experiencing 1-in-100-year storms. In July 2024, a storm dropped nearly 10cm of rain in three hours, instantly overwhelming drainage systems.
- Financial Risk: The July 2024 flood event resulted in a direct insured loss of $99 million CAD in Southern Ontario, demonstrating the massive financial exposure to property owners.
- Hydrostatic Pressure from Clay: Toronto’s underlying geology is dominated by low-permeability glacial till and high-plasticity clay, which traps water and creates intense pressure against basement walls, leading to cracks and leaks.
- Rising Claim Costs: The average claim size from the 2024 flood was approximately $10,000 higher than the 2013 event, a trend showing that damage costs are rapidly escalating due to inflation and weather intensity.
- Underinsurance Danger: Only 10% to 15% of households carry overland flood insurance, leaving the vast majority of homeowners responsible for 100% of repair costs after a major flood.
The time to protect your investment is now, before the next storm hits. Call and book your professional waterproofing assessment today.
Popular Waterproofing Services
Explore the best waterproofing solutions for your home below. Select the service you want to learn about the DGI difference and how our contractors can protect your home all year round!
Toronto Waterproofing Rebates & Incentives
Save Money On Waterproofing Services With City-Wide Incentives
City of Toronto Basement Flooding Protection Subsidy Program (BFPSP)
This municipal program is the main incentive designed to help homeowners offset the cost of flood protection devices that prevent sewer backup and basement flooding.
Total Maximum Subsidy: Up to $6,650 CAD per property. This is the total across all eligible work types combined, for work completed on or after November 12, 2025 (applications accepted since May 1, 2026, when the City expanded the program).
Eligibility: Owners of single-family, duplex, triplex, or fourplex residential homes in Toronto are eligible.
Covered Services:
Home Plumbing Assessment: A one-time professional assessment of your home’s plumbing to identify flood risks. Max subsidy amount: Up to $500.
Backwater Valve Installation: Prevents sewage and storm sewer water from backing up through your floor drains and toilets into your basement during heavy rain. Max subsidy amount: Up to $1,600 per device (maximum two devices).
Sump Pump Installation: Collects water from your weeping tile system and pumps it out of the basement and away from your home’s foundation. Max subsidy amount: Up to $2,250 (maximum one device), plus an additional up to $300 for a battery backup.
Severance and Capping: Disconnecting the foundation drain (weeping tile) from the city’s sewer system and capping the connection to eliminate a direct entry point for floodwater. Max subsidy amount: Up to $400 for the severance and capping work.
Source: City of Toronto – Basement Flooding Protection Subsidy Program, current as of the City’s May 1, 2026 program expansion.
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Waterproofing Articles & Resources
Check out our waterproofing articles to learn from our experts, make educated choices and get informed when it comes to all things home waterproofing.
Interior Vs Exterior: Which Waterproofing System Is Best For You?
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Toronto’s Flood Map: Check if your home is at risk!
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The Impact of Climate Change on Basement Waterproofing
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Frequently Asked Questions: Basement Waterproofing in Toronto
How much does basement waterproofing cost in Toronto?
Most Toronto basement waterproofing jobs run from a few hundred dollars for a single crack injection to several thousand dollars for full exterior waterproofing, depending on the method, the depth of excavation, and the size of the foundation. Interior systems are generally less expensive than full exterior excavation. Ask for a free on-site inspection and a written quote before any work starts.
Is interior or exterior waterproofing better for a Toronto home?
It depends on the source of the water. Exterior waterproofing stops water before it reaches the foundation wall and is the stronger long-term fix for older Toronto homes with aging membranes, but it requires excavation. Interior waterproofing manages water once it is already at the foundation with a drainage system and sump pump, and is faster to install with less disruption to landscaping.
Does the City of Toronto offer a subsidy for basement waterproofing?
Yes. The City of Toronto’s Basement Flooding Protection Subsidy Program offers up to $6,650 per property for eligible backwater valve, sump pump, and foundation drain disconnection work completed on or after November 12, 2025. DGI Waterproofing can tell you which of our services qualify.
How long does basement waterproofing take in Toronto?
A typical interior waterproofing job takes one to two days. Full exterior waterproofing usually takes two to five days depending on the length of foundation being excavated, weather, and site access. We give you a firm timeline after the free inspection.
What causes basements to leak in older Toronto homes?
Toronto’s clay-heavy soil expands and contracts with moisture, and homes over 50 years old often have foundation membranes and weeping tile that have deteriorated or were never installed to modern standards. Combined with increasingly heavy rainfall, this is why older Toronto basements are more prone to leaks and hydrostatic pressure damage.
Your Trusted Partner for Basement Waterproofing in Toronto
Don’t let water damage compromise your property’s integrity. Contact us today for expert waterproofing services or water damage restoration services! Protect your home and commercial space from the next rainfall and ensure a dry, secure environment.