Basement Waterproofing
North York
North York’s Trusted Basement Waterproofing Company
Water issues in your basement can silently cause long-term damage, but they’re preventable with the right expertise. At City Wide Group, we provide expert basement waterproofing in North York to prevent leaks, flooding, and costly foundation problems. With more than six decades of experience and proven solutions, we’ve built a reputation as one of the most trusted waterproofing companies serving North York homeowners.
North York presents its own unique waterproofing challenges. From the clay-heavy soils across Willowdale and Bathurst Manor to the high water tables found near the Don River ravines in Hogg’s Hollow and the Lawrence-Allen corridor, water management is not a one-size-fits-all problem here. Many of the area’s post-war bungalows and split-levels, built between the 1950s and 1980s, have aging concrete-block foundations and original weeping tile systems long past their service life.
When we assess your basement, we look beyond the obvious wet spots. Our team checks moisture patterns, efflorescence, and foundation wall conditions, then considers how local drainage, soil type, and freeze–thaw cycles are contributing. That bigger-picture view allows us to design a waterproofing system built for North York’s conditions not just average weather.
We provide waterproofing and underpinning services across the GTA:
Why North York Homes Are Particularly
Vulnerable to Basement Leaks
A number of factors make North York one of the GTA’s more demanding environments for foundation waterproofing:
- Clay-heavy soil: Much of North York sits on dense clay that expands when wet and contracts when dry, placing cyclical pressure on foundation walls and accelerating crack formation.
- Aging housing stock: Thousands of North York homes were built in the postwar boom with materials and drainage standards that no longer meet today’s demands. Many have never had their weeping tile replaced.
- Ravine lot drainage: Properties near the Don River, West Don, and Earl Bales valleys often face elevated groundwater levels and surface runoff that standard drainage cannot handle without professional intervention.
- Freeze–thaw cycles: Toronto’s winters subject North York foundations to repeated freeze–thaw stress, widening existing cracks and allowing more water to penetrate with each passing season.
- Infill development: New construction on neighbouring lots changes historic drainage patterns, sometimes directing additional surface water toward older foundation walls not designed to handle the increased load.
If you’ve noticed damp walls, efflorescence (white mineral deposits), a musty smell, or standing water after heavy rain, your North York home may already be experiencing foundation water pressure. The earlier you act, the less expensive the solution.
The client contacted The City Wide Group after noticing a water leak in the basement at the residential property located at Rykert Crescent, Toronto. The concern involved active water infiltration along a section of the foundation wall.
The client contacted The City Wide Group for concerns related to moisture and water infiltration along the basement foundation. An initial site assessment recommended 8 linear feet (LF) of exterior waterproofing, as well as the removal and later reinstallation of interlock once the soil has adequately settled.
The client contacted The City Wide Group regarding water infiltration concerns affecting the basement area of the property. A site assessment was completed, and exterior waterproofing was recommended as the most effective solution.
Basement Waterproofing Services in North York
Every home and every foundation behaves a little differently. That’s why City Wide Group offers a complete range of waterproofing and foundation services, so we can match the solution to your specific North York property instead of applying a generic fix.
| Exterior Waterproofing | The most comprehensive long-term solution. We excavate to the footing, clean and repair the foundation wall, apply a Bituthane rubber membrane, install a Delta MS drainage mat, and lay new weeping tile in clean gravel. Stops water before it ever enters, backed by our Lifetime Transferable Warranty. |
| Interior Waterproofing | Where exterior access is limited, interior waterproofing manages water that reaches the foundation by channelling it safely to a sump pump. We break the perimeter floor, install perforated weeping tile, place a Delta MS membrane along the wall, and finish with a clean concrete topping. |
| Sump Pump Installation | A properly sized sump pump is the last line of defence against basement flooding. We supply and install Liberty pump systems and can pair them with battery backup units for added protection during power outages. |
| Foundation Crack Repair | Hairline or structural cracks are sealed using high-pressure polyurethane injection or hydraulic cement, depending on crack type and depth. We address the root cause, not just the surface symptom, to prevent recurrence. |
| Weeping Tile Replacement | Weeping tile systems in North York homes from the 1950s–1980s were typically clay or concrete tile that deteriorates over time. We replace failed systems with modern perforated PVC surrounded by clear gravel to restore proper drainage around your foundation. |
| Window Well Installation | Below-grade windows are a common point of water entry. We install properly drained window wells using pressure-treated wood or pre-cast stainless steel, with a vertical drain connected to the weeping tile system. |
Why North York Homeowners Choose City Wide Group
|
Proven Experience Since 1961 Over 60 years of family-owned operation and more than 50,000 completed projects across the GTA, including thousands of North York homes, means we’ve seen and solved every basement water scenario this area presents. |
Lifetime Transferable Warranty We’re the only waterproofing company in Toronto and the GTA to offer a real, fully transferable lifetime warranty. When you sell your North York home, the warranty transfers to the new owners, adding measurable property value. |
|
22+ Industry Awards City Wide Group has earned more than 22 awards for customer satisfaction and workmanship quality, including the Consumer’s Choice Award for 29 consecutive years. Our reputation is built on doing things right the first time. |
Top-Quality Materials We use Bituthane rubber membranes and Delta MS drainage boards, proven products that won’t become brittle and are flexible enough to handle North York’s temperature extremes. Liberty pump systems are used for all sump installations. |
|
Free Estimates & Transparent Pricing We provide clear, written estimates before any work begins. Our pricing is competitive with the North York market, and you’ll never be surprised by hidden costs or a vague scope of work. |
24/7 Emergency Response Basement flooding can’t wait for business hours. Our team is available around the clock for urgent waterproofing and repair needs across North York and the broader GTA. |
Our Process for North York Homeowners
From the first call to the final cleanup, we focus on long-term fixes, not temporary patches — so you can stop worrying about water and start using your basement with confidence.
|
Free On-Site Inspection We visit your North York property and conduct a thorough assessment, checking foundation walls, moisture patterns, drainage conditions, and any visible cracks or efflorescence. No obligation, no pressure. |
|
|
Clear Written Estimate You’ll receive a detailed written estimate outlining the recommended scope of work, the methods being used, materials, and associated costs before any work begins. No vague quotes. |
|
|
Professional Installation Our experienced crews complete the work efficiently, respecting your property throughout. Before any digging begins, all utility services are notified, and the work area is clearly marked. We finish with a thorough site cleanup. |
|
|
Lifetime Transferable Warranty On completion, you receive a warranty certificate that is fully transferable to future homeowners. Your treated area will remain free from water or moisture entry for as long as your house stands. |
North York Neighbourhoods We Serve
City Wide Group serves homeowners throughout North York, including:
| • Willowdale | • Don Mills | • Bathurst Manor |
| • Lawrence Park North | • Hogg’s Hollow | • Newtonbrook |
| • York Mills | • Lansing–Westgate | • Jane–Finch |
| • Downsview | • North York Centre | • Clairlea–Birchmount |
Lifetime, Fully Transferable Warranty
The City Wide Group prides itself on superior quality, adhering to the philosophy of doing things correctly from the outset and striving for unmatched customer contentment. Our assurance in our craftsmanship and wealth of experience makes us the only company in Toronto & the GTA to offer a real LIFETIME WARRANTY. Opt for The City Wide Group for foundation waterproofing, and we promise your treated area will remain free from water or moisture entry for as long as your house stands. Our services come with a warranty certificate that is transferable to endless future homeowners.
Family Owned Waterproofing and Underpinning Experts since 1961
Frequently Asked Questions
City Wide Group is the only waterproofing company in Toronto and the GTA to offer a real, fully transferable lifetime warranty. Your warranty certificate transfers to any future owner of the property, meaning the protection follows the home, not just the original homeowner. This adds measurable value when selling your North York property.
A properly installed waterproofing system, particularly when combined with a sump pump and functioning weeping tile, significantly reduces the risk of flooding. Note that sewer backup events require a separate backwater valve installation; a comprehensive waterproofing system provides the best available protection for North York homes against infiltration from groundwater and surface water.
Yes in fact, older homes with concrete block or stone foundations benefit most from professional waterproofing. These foundation types are more porous than poured concrete and often have deteriorated mortar joints that allow water to seep through. Our team has extensive experience with the older housing stock common throughout Willowdale, Don Mills, and Bathurst Manor.
Most residential projects in North York are completed within 1 to 3 days, depending on the method used and the linear footage being treated. Larger scopes or properties requiring permits may take longer. We provide a clear timeline in your written estimate.
Exterior waterproofing is the more comprehensive, long-term solution it stops water before it contacts your foundation. Interior waterproofing manages water that has already reached the wall and is a practical option when exterior access is restricted (e.g., limited lot space, close neighbours, or interlock/landscaping). Our team recommends the right approach based on your property’s specific conditions.
Common signs include water stains or damp patches on foundation walls, white mineral deposits (efflorescence), a persistent musty smell, visible cracks in the foundation, peeling paint, or water pooling on the floor after rain. Many North York homes with original 1950s–1970s drainage systems are overdue for evaluation even without visible symptoms.
