A gold and silver round badge with the words Lifetime Warranty written twice in a circular pattern around the edge, and a central banner also displaying Lifetime Warranty. The badge has star accents. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

your basement experts for over 63 years

A gold and silver round badge with the words Lifetime Warranty written twice in a circular pattern around the edge, and a central banner also displaying Lifetime Warranty. The badge has star accents. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500
Home – New2025-04-17T14:14:03-04:00

Family-Owned Basement Waterproofing Company
Since 1961

More Than 60 Years of Waterproofing Expertise and 50,000+ Projects Completed

Black and white logo featuring the word RENOMARK at the top, a stylized hammer forming a check mark in the center, and the phrase RENOVATORS MARK OF EXCELLENCE at the bottom. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500
A blue speech bubble with a gold crown above it, next to the text Best of Awards 2025 and Winner 12 times. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500
A red and gold emblem with the text Consumer Choice Award 2025 Cincinnati displayed prominently at the center. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500
The image shows the BILD logo featuring the word BILD in gray with a green architectural design within the letter D. Below, the text reads BUILDING A BETTER GTA TOGETHER in gray. A green star shape with a building icon is to the right. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500
The image shows a blue and white logo with the text BBB Accredited Business and A+ Rating. The BBB torch emblem is on the left. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500
A gold circular badge with a serrated edge. The outer ring is labeled Lifetime Warranty in white text. The inner section has a gray banner with the words Lifetime Warranty in bold black text. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Testimonials

Your Go-To Waterproofing Company with 60+ Years of Experience and over 50,000+ Happy Clients

We have been ensuring the safety of families and companies with our waterproofing and underpinning services for more than 60 years at The City Wide Group. Founded in 1961, our family-owned business has completed more than 25,000 projects, serving the community with their needs. Along with gaining community trust, we have received the Consumer’s Choice Award for 29 consecutive years, honoring our devotion to quality workmanship. Our customers will enjoy peace of mind knowing that their property will be protected for generations to come, thanks to our fully transferable lifetime warranty.

Two men in suits hold an award plaque together in front of a dark, cityscape background with a prominent lit-up tower. The plaque is from the Consumer Choice Award 2023. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Basement Waterproofing Services

A flooded basement with murky water covering the floor. Several cardboard boxes float in the water. The walls are plain with two small windows near the ceiling. A light fixture is on the ceiling, and pipes are visible. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Basement
Waterproofing

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 Toronto to prevent leaks, flooding, and long-term problems. With decades of experience and proven solutions, we’ve built a reputation as one of the most trusted waterproofing companies in Toronto.

A foundation wall is covered with a dimpled waterproof membrane held in place by orange fasteners. The ground beside the wall has been excavated, exposing soil and part of a house window above. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Exterior
Waterproofing

City Wide Group offers expert exterior waterproofing services in Toronto to keep your foundation dry and protected year-round. By addressing the problem at its source—from the outside—we prevent water from ever entering your basement. As a trusted waterproofing company Toronto homeowners rely on, we use proven techniques that ensure long-term results.

A person wearing a white work glove smooths wet cement with a metal trowel on a flat surface. The background is gray, and only the hand and forearm are visible. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Interior
Waterproofing

Our interior waterproofing solutions are designed to stop water infiltration from inside your home, using advanced sealing systems and drainage channels. This is an ideal option when exterior waterproofing isn’t feasible due to space or property constraints. Count on City Wide Group for reliable and cost-effective basement waterproofing in Toronto.

A bare, partially stripped room with exposed wall studs and no flooring. A fan and a dehumidifier are on the floor, with cords trailing. A small window lets in light and a detached door leans against the far wall. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Basement Flooding
and Water Damage

City Wide Group offers expert exterior waterproofing services in Toronto to keep your foundation dry and protected year-round. By addressing the problem at its source—from the outside—we prevent water from ever entering your basement. As a trusted waterproofing company Toronto homeowners rely on, we use proven techniques that ensure long-term results.

A worker in a blue hard hat, safety glasses, and blue protective clothing adjusts a valve on a pipe in an industrial or utility setting, surrounded by pipes and insulation materials. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Leaky
Basement Repair

Our interior waterproofing solutions are designed to stop water infiltration from inside your home, using advanced sealing systems and drainage channels. This is an ideal option when exterior waterproofing isn’t feasible due to space or property constraints. Count on City Wide Group for reliable and cost-effective basement waterproofing in Toronto.

Several workers in safety gear are cleaning or working on the floor of a large, unfinished indoor space with exposed ceiling tiles and columns. Construction materials and fire extinguishers are visible around the room. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Commercial
Waterproofing

We bring the same precision and quality to commercial waterproofing projects as we do to residential ones. Whether you manage a multi-unit building or a retail space, we provide custom waterproofing solutions tailored to your property. As one of the top waterproofing companies in Toronto, City Wide Group delivers professional, large-scale protection you can count on.

A construction worker in a high-visibility vest and hard hat kneels in a deep, dug-out trench, partially covered by a slab of concrete, working or inspecting something underground. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Basement
Underpinning / Lowering

Create more usable space and add value to your home with our expert basement lowering services. Through safe and effective underpinning, City Wide Group helps homeowners gain ceiling height while reinforcing foundation integrity. If you’re planning a basement renovation, this is the ideal first step.

A brick house wall with visible foundation damage and cracks, surrounded by grass and weeds. A metal pipe and a wooden fence post are also partially visible on the left side. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Foundation
Cracks Repair

Even small foundation cracks can grow into serious structural threats if ignored. At City Wide Group, we specialize in precise crack repair to stop water intrusion and maintain your home’s stability. Trust a leading Toronto basement waterproofing expert to secure your foundation for the long term.

A sump pump system installed in a basement floor pit, with connected white PVC pipes, a blue hose, and a float switch mechanism visible inside the circular pit. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Sump Pump
Services and Installation

A properly installed sump pump is your basement’s first line of defense against water damage. We provide complete sump pump installation and maintenance services, helping Toronto homeowners avoid flooding during heavy rains. Count on City Wide Group to keep your home dry and protected, no matter the season.

A plumber wearing a plaid shirt, overalls, and a headlamp uses a pipe wrench to work on copper pipes attached to a brick wall in a dimly lit room. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Drain Cleaning
and Replacement

Blocked or deteriorating drains can lead to serious basement water issues if not addressed quickly. At City Wide Group, we offer professional drain cleaning and replacement services to keep your drainage system working properly and prevent costly water damage. Whether it’s a routine cleanout or a full pipe replacement, our team ensures your home is protected as part of our trusted basement waterproofing services in Toronto.

A person wearing protective gear sprays a chemical on a moldy wall for cleaning or removal. They wear a white suit, gloves, mask, cap, and carry a spray tank on their back. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Mould
Removal

Excess moisture in your basement creates the perfect environment for mould growth, which can impact both your health and your home’s structure. City Wide Group offers safe, thorough mould removal services as part of our comprehensive basement waterproofing solutions. Protect your living space and breathe easier with help from a leading Toronto waterproofing company.

Large black corrugated drainage pipes are coiled on green grass near a trench filled with gravel, likely prepared for installation as part of a landscape drainage system. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Weeping Tile
Installation

A properly installed weeping tile system is essential for keeping groundwater away from your foundation and preventing basement leaks. At City Wide Group, we specialize in modern weeping tile installation that helps redirect water efficiently and protects your home from long-term damage. As part of our full-service basement waterproofing in Toronto, we ensure every drainage solution is built to last—giving you peace of mind with every rainfall.

 

Blindside Applications

Construction workers in safety gear build and inspect a tall, black-coated concrete wall at a snowy construction site near a Nissan dealership. Scaffolding and orange traffic barrels are visible along the work area. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Sprayseal

SpraySeal is an elastomeric coating for waterproofing vertical walls, ICF foundations, and more. SpraySeal is eco-friendly, safe to use, weather resistant, waterproof, and protects against corrosion. SpraySeal is a highly versatile elastomeric coating that is cold-applied using a spray system.

A construction site with a wall covered in black waterproofing or protective membrane. The wall runs alongside a concrete floor, with some debris and dust scattered at the base. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Air
Barriers

Air barriers control air leakage in and out of the building enclosures. Naturaseal’s Air Barrier NS-A250 is a highly versatile elastomeric coating that is cold-applied using a spray system, and separated into assemblies, systems, materials, components, and accessories.

A construction worker in a safety vest and helmet installs black waterproofing material on a foundation wall at a building site, with wood forms and gravel visible around. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Delta-Natura
Drain

DELTA®-Natura DRAIN is a high performance, 3-dimensional drainage composite with three layers. The drainage core provides high impact-and tear-resistance and is unaffected by environmental stress-cracking.

We Provide Essential
Waterproofing, Underpinning and Drain Support!

We Provide Essential
Waterproofing, Underpinning and Drain Support!

Why Choose Us

Two men are standing in front of a large banner that reads CITY WIDE GROUP INC Underpinning & Masonry Restoration. Both are wearing black shirts with the company logo. The older man has his hand on the younger mans shoulder. Waterproofing Company | Basement Leak Repair | City Wide Group | Professional waterproofing company and basement leak repair in Toronto since 1961. | https://www.citywidegroup.com | +1 416-283-5500

Over 63 Years as Your Toronto Waterproofing Company

The City Wide Group has been a leading Toronto waterproofing company for over six decades. Since we first opened our doors in 1961, we’ve delivered nothing but quality work that is completed on time and on budget – it’s how we built our reputation in our community as a trusted waterproofing company in Toronto.

Family owned and operated, our team has spent decades helping clients with all their water damage, waterproofing solutions and waterproofing services, foundation cracks, basement wall, and wet basement needs. We always prioritize our clients and their needs; it’s what’s propelled City Wide Group to win the prestigious Consumer’s Choice Award for 27 consecutive years.

For waterproofing and underpinning solutions that are sure to protect your home, choose The City Wide Group.

Our expert advice and timely, dependable service are backed by an accurate estimate that will be done well in advance of the project commencing – and we always guarantee customer satisfaction after the work is complete. We can permanently prevent wet and leaky basement Toronto issues and seal foundation cracks – inside and out . Additionally, we install weeping tiles, drains inside or out, and underpin your basement to ensure that your home is fully waterproofed. .

Safeguard your family’s health and your property’s value with a waterproofing company Toronto you can trust – contact The City Wide Group.

Our Locations

Waterproofing Toronto Homes for 63 Years

It’s important that basement leak repairs are done right so that the issue doesn’t every again come back. And the only way to do that is to work with a basement leak repair Toronto team that has the experience and knowledge necessary to get the job done right the first time. And here’s the best part: we use our decades of knowledge and experience to keep your basement leak repair cost down as much as possible. We also provide proactive services, like waterproofing and underpinning, to ensure that your basement is ready to withstand everything the elements can throw at it.

Waterproofing Services In Toronto And The GTA

Waterproofing & Underpinning FAQs

Can small cracks in the foundation cause major basement leaks?2024-11-04T10:56:57-05:00

Yes, even small cracks can allow water to seep into your basement, leading to bigger issues over time. Sealing these cracks early with a proper basement and waterproofing method can prevent water infiltration, mold, and structural damage. Foundation crack repair is a key part of the waterproofing basement process to ensure long-lasting protection for your home.

What’s the difference between interior and exterior basement waterproofing?2024-11-04T10:57:20-05:00

Interior waterproofing manages water that has already entered your basement, typically using sump pumps and drains. Exterior waterproofing prevents water from ever reaching your foundation by sealing cracks and applying protective barriers, such as membranes and weeping tiles. Both methods are effective, but combining them offers the best protection for your home. If you’re searching for “basement waterproofing near me”, consider both solutions for comprehensive coverage.

What is the cost of waterproofing a basement?2024-11-04T10:57:25-05:00

The waterproofing basement cost can vary depending on the size of your basement, the extent of existing damage, and the systems installed. Factors like the installation of sump pumps, drainage systems, or a basement waterproofing membrane influence pricing. However, the cost of waterproofing is an investment that saves you from future repairs caused by water damage or structural problems, making it cost-effective in the long run.

How does interior basement waterproofing work?2024-11-04T10:57:39-05:00

Interior basement waterproofing typically involves installing drainage systems, like sump pumps and French drains, to direct water away from your foundation. These systems manage any water that enters through cracks or weak spots. By controlling water inside, you avoid costly repairs down the road. A basement waterproofing membrane is often installed to ensure no moisture seeps through. This proactive approach stops problems before they start, ensuring your basement stays dry even during heavy rain.

What is basement waterproofing, and why is it important?2024-11-04T10:57:47-05:00

Basement waterproofing involves using materials and systems to prevent water from seeping into your basement. It’s crucial because a dry basement protects your property from water damage, mold growth, and structural issues. Waterproofing your basement not only preserves your foundation but also maintains the value of your home. Whether you’re dealing with occasional leaks or want to prevent future damage, waterproofing basement solutions are essential for long-term protection.

Why do basements leak?2024-11-04T10:54:33-05:00

Foundations leak for various reasons, such as; a congested weeping tile system, where the weeping tile can no longer flow due to a blockage of debris, soils or tree roots. Horizontal or vertical cracks in the foundation, or separation of blocks, voids where the foundation and footing meet, allow water to enter into the basement.

Many foundations were never waterproofed properly during the construction process, particularly older buildings.

Can I do waterproofing and underpinning at the same time?2024-03-18T14:29:51-04:00

Often, it makes sense to do both at the same time, especially if digging is already needed for underpinning. This can be more efficient and might even save money in the long run. City Wide Group can look at what your home needs and suggest doing both together if it’s the best option.

How much disruption does underpinning cause?2024-03-18T14:29:37-04:00

Underpinning can be a bit more disruptive than waterproofing because it might involve digging around your home’s foundation. But, professionals work to keep the disruption as low as possible. The process is well-planned and communicated, and many homeowners find the benefits outweigh the temporary hassle.

Our Latest Blogs

How Much Does Interior Waterproofing Cost?

January 22nd, 2025|

Interior waterproofing is one of the most effective ways to protect your home from water damage, particularly in your basement. However, before diving into the specifics of interior waterproofing, it’s important to understand the factors that affect the cos[...]

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.

  • Before any digging gets underway, The City Wide Group ensures all utility services are informed and the dig site is clearly marked.

  • We first reveal the foundation’s walls and base, giving them a good clean to guarantee that the new concrete will bond well.

  • To deal with any cracks or openings in the foundation, we fill them with a specific type of cement before applying a fresh concrete layer over the entire area.

  • We then secure the foundation with a RUBBER BITUTHANE MEMBRANE for waterproofing, covering both the wall and its base.

  • Additionally, we attach a DELTA MS plastic mat along the foundation wall down to the base, aiding in water drainage.

  • New weeping tiles are installed to divert water from the foundation, surrounded by clean ¾” gravel to ensure proper drainage.

  • The dug-out soil is then replaced and compacted firmly to avoid any future ground movement.

  • After the work is finished, we thoroughly clean the site of any construction debris.

  • To wrap up, we repair and reinstate any outdoor spaces and landscaping that were affected by our work.*

    *completion status of grounds and landscape may vary dependent on agreement with City Wide Group.

FREE WATERPROOFING ESTIMATE

Whether you have an actual water leak or evidence of water seeping through the walls, contact City Wide Group for a free estimate about how to waterproofing your basement.

Please complete this form and we will call you back to arrange an appointment for a Free Estimate.

Company Information

25 Hollinger Road,
East York, Ontario, M4B 3N4

Phone: +1 416 283 5500

Web: Website

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