Top 10 Trusted Basement Waterproofing Companies in Toronto

top 10 basement waterproofing companies in toronto

Basements are arguably one of the most neglected parts of any house. When they start leaking, they can cause a lot of damage. A wet basement is not only a nuisance but can also result in the development of moulds and structural problems.

If you’re dealing with a damp basement, it’s important to find a reliable waterproofing company to solve the problem. That said, many companies in Toronto provide basement waterproofing services.

However, not all of them are created equal. To help you find the best company for the task at hand, we have compiled a list of the top 10 basement waterproofing businesses in Toronto.


Things to Consider When Choosing a Waterproofing Company
What is the Cost of Waterproofing in Toronto
1. Aquatech Waterproofing
2. Act Fast Waterproofing
3. AAA Waterproofing & Underpinning
4. CD Basement Waterproofing
5. City Wide Group
6. Dryshield Waterproofing Corporation
7. Direct Waterproofing
8. Royal Work Basement Waterproofing
9. Canada Waterproofers
10. RCC Waterproofers
Waterproofing FAQs


Things to Consider When Choosing a Waterproofing Company

Things to Consider When Choosing a Waterproofing Company

When performing a home improvement project, it is important to settle on a trusted and qualified specialist. With numerous options available, knowing where to start can be difficult. Here are a couple of pointers to keep in mind when choosing a specialist.

-Ask for recommendations from friends, family, and next-door neighbours who have just recently finished a similar task. Perform extensive research on each specialist online and read the various client reviews. It is also important to ensure that the contractor is accredited and guaranteed.

-When you have narrowed down your choices, request quotes from each waterproofing specialist. Make sure you compare the rates, the scope of work, and the expected delivery time. Ensure that you fully understand all aspects of the contract before signing anything.

By following these tips, you can be certain that you are working with a certified and trustworthy specialist who will complete the project to your satisfaction.


What is the Cost of Waterproofing in Toronto

The waterproofing cost in Toronto varies depending on the size and scope of the task. For a small house, the average basement waterproofing cost of waterproofing is around $2000. For bigger houses, the average cost can be closer to the $5000 mark. That said, the project’s cost will highly depend on the type of waterproofing required.

For instance, if there is considerable damage to the foundation, the repair work cost and basement waterproofing cost can be much higher. Waterproofing is an important investment for any home, as it can help homeowners to prevent serious water damage.

When selecting a waterproofing professional, it is important to get multiple quotes and select a professional with a good reputation. By taking these actions, you can be more than certain that your home is well-protected from the serious effects of water.

Below you will find a table that can give you an idea as to what your waterproofing solution might cost:

Exterior Basement Waterproofing Cost $100 – $300 per linear square ft.
Interior Basement Waterproofing Cost $70 – $200 per linear square ft.
Sump Pump Installation Cost $600 – $3000 depending on sump pit
Window Well Installation Cost $1600 – $3200 depending on depth & size
Cracked Foundation Repair Cost $1,600 – $3,200
Mould Removal Cost $1,000 – $5,000
Basement Underpinning Cost $300 – $400 per linear square ft.
Basement Lowering Cost $300 – $400 per linear square ft.
Internal Crack Repair Cost $50 – $750 depending on size of the crack
Spot Repair Cost $1,600 – $3,200
Backwater Valve Installation Cost $1,200 – $4,000


The Top 10 Waterproofing Companies in Toronto

1. Aquatech Waterproofing

Aquatech Waterproofing

  • Services: Interior waterproofing, backwater valve and sump pump installation, exterior waterproofing, drain repair, wet basement repair, battery backup pump installation, French drain installation and repair, foundation crack repair, drain snaking and inspection.
  • Awards and Recognitions: 5 Times Best Homestars Winners
  • Contact Details: 1-866-891-1917 (Toll-Free), 416-300-2191
  • Address: 20 Hyde Ave. Toronto, ON, M6M 1J3, 379 Bering Ave, Etobicoke, ON M8Z 3B1, Canada
  • Locations: Ajax, East York, Burlington, Oshawa, Toronto, Pickering, Richmond Hill, Mississauga

Aquatech Waterproofing is arguably the best basement waterproofing company in Toronto. With over 25 years of experience in the market, Aquatech Waterproofing has helped thousands of property owners to protect their homes from water damage.

As one of the best waterproofing companies, Aquatech Waterproofing handles many waterproofing problems, no matter how big or small. Some services offered by Aquatech Waterproofing include backwater valve and sump pump installation, exterior waterproofing, foundation crack repair, drain repair, battery back pump installation, wet basement repair, French drain installation and repair, sewer snaking and back-up and much more.

Their staff are highly trained and experienced and use the latest technology and devices to complete various waterproofing tasks. The company also offers a 25-year guarantee on all of its projects, so you can be certain that your home is fully protected from water damage.

Consumer Reviews

“EXCELLENT experience. Andrew was the very first one to arrive and was exceptionally kind and resourceful. Igor and Basil joined Andrew a few minutes later and all 3 of them worked extremely hard and finished this massive project in one day. These are just a few of the hardest workers I have ever seen. There were no troubles or surprises and Andrew, Igor and Basil were extremely competent and polite. Also, Nico was extremely versatile with our continuous change of plans and was really accommodating and understanding. An exceptional experience all around – Highly recommended!” – Nadine Nasir

“I had a small moisture issue, most likely due to bad gutters more than anything. Aqua tech was friendly enough to schedule a visit and were timely in getting to me. Shawn performed the examination and provided friendly and expert service. He was exceptionally refined and did not attempt to over offer me on unneeded choices. If I do have any waterproofing work to my home, I will definitely use them again. I would highly recommend this company to others based on my experience with Shawn.” – Rob G.


2. Act Fast Waterproofing

Act Fast Waterproofing

  • Services: Basement lowering, control mould, crack injection sealing, external waterproofing, internal waterproofing, sump well and pump installation. 
  • Awards and Recognitions: Contractor of the Year, Homestars Review Award WSIB CSPAAT
  • Contact Details: 647-993-3466
  • Locations: Ajax, East York, Burlington, Oshawa, Toronto, Pickering, Richmond Hill, Mississauga

Act Fast Waterproofing is a family-owned and run waterproofing company that has been offering reliable wet basement waterproofing services in Toronto and its environs for many years. They are highly committed to providing their clients with the best possible waterproofing service and have a group of experienced specialists.

Act Fast Waterproofing pride itself on being one of Toronto’s most dependable waterproofing businesses. They offer various services, including exterior and interior waterproofing, foundation waterproofing, and sump pump installation.

The highly experienced experts will work with you to find the best service for your foundation repair and waterproofing needs. They use the most recent technology and equipment to ensure that your home is waterproofed. In addition, the company also provides a 100% satisfaction warranty for all their work.

The company also offers a 10-year guarantee on all of their work, so you can be sure that your house is protected from water damage. If you’re looking for a trustworthy and cost-effective waterproofing business, Act Quick Waterproofing is a superb choice. Contact them today for a free consultation.

Consumer Reviews

“We called Colm to examine a minor leakage in our basement, and I am so happy we did! He was quick to react and informed us of his arrival time. When he looked at the problem, he figured out that it would need to be addressed from the exterior of our home. Although the work didn’t fall within the services he offers, he took his time discussing the issue and making some suggestions on the very best course of action. He also offered the name of someone who might help with the work, which was highly appreciated. He was comprehensive, practical, honest and kind. We will definitely call him, need to we need any wet basement waterproofing in the future.” – Lauri Brooks

“Colm Hendrick was incredibly handy, sincere and thorough in evaluating the leak in our basement and talking us out of a possibly costly and disruptive repair work job. He was reassuring, kind and truthful and made actually handy suggestions. We will absolutely call him once again when we have any waterproofing needs when we remodel our basement.” – Judith Pillsbury


3. AAA Waterproofing & Underpinning

AAA Waterproofing & Underpinning

  • Services: Basement waterproofing, exterior basement waterproofing, interior basement waterproofing and structure waterproofing.
  • Contact Details: 416-833-6095
  • Address: 1750 The Queensway unit 1339 Etobicoke, ON M9C 5H5

For over 15 years, AAA Waterproofing & Underpinning company has been offering quality waterproofing services to homeowners in Toronto. They are among the most reliable waterproofing companies in the city, and their dedication to consumer satisfaction is quite clear in the ratings they receive from their clients.

AAA Waterproofing & Underpinning company offers a wide variety of waterproofing services, comprising basement waterproofing, structure waterproofing, and roofing waterproofing. Other services they offer include basement lowering, basement underpinning, exterior basement waterproofing, interior basement waterproofing and demolition.

Their team of highly skilled and licensed experts uses up-to-date and efficient innovations and techniques to guarantee that your home is properly protected from water damage. They also promise their work with a 100% fulfillment guarantee.

If you’re looking for a reliable waterproofing business in Toronto, AAA Waterproofing & Underpinning is definitely worth thinking about.

Consumer Reviews

“We would highly recommend this business to anyone! We had water in our recently finished basement of our Oakville home. AAA came almost immediately, assessed the issue, fixed the foundation from the outdoors (the way it needs to be!) and installed a sump pump to drain excess water from the structure. They did it all without delay as promised, complete with a 25-year warranty on the work! Ziggy and AAA returned every call and text immediately!” – Ken Williams


4. CD Basement Waterproofing

  • Services: Exterior waterproofing, flow protection, foundation repairs, commercial foundation and commercial waterproofing. 
  • Contact Details: (647) 363-7815
  • Address: 25 Richgrove Dr #212, Etobicoke, ON M9R 0A3, Canada

CD Basement Waterproofing is one of the best waterproofing companies in Toronto. They have over twenty years of experience in the market and are devoted to providing quality services to their customers. A few of the services they offer include basement waterproofing, structure repair, and egress windows.

Basement waterproofing is one of the most popular services offered by CD Basement Waterproofing. As an authority in their field, CD Basement waterproofing uses a variety of approaches to water-resistant basements, including drain systems, water-resistant coatings, and sump pumps. They likewise offer a service warranty on all of their work, which is something that you rarely see with other companies.

If you’re looking for a dependable and knowledgeable company to water resistant your basement, then CD Basement Waterproofing is a great option. They have a proven track record of success and are committed to offering quality services to their clients.

Consumer Reviews

“I had an outstanding experience with CD Basement Waterproofing. They waterproofed my basement quickly and effectively, and they did it at a fraction of the quotes I received from other waterproofing companies. I would definitely suggest them to anyone looking for dependable waterproofing services.” – Tim N.

“I got in touch with CD Basement Waterproofing since I was having water problems in my basement. They came out and did a consultation and found the source of the water and repaired it. They were extremely professional and their work was top-notch. I would absolutely advise them to anyone in need of waterproofing services.” – Michael B.


5. City Wide Group

City Wide Group

  • Services: Wet basement waterproofing, underpinning, drain cleaning and replacement
  • Contact: 519 501-1442
  • Locations: Toronto, Niagara Falls, Welland, Hamilton and Tri-City

City Wide Group is one of the very best waterproofing companies in Toronto. A highly experienced waterproofing company, they have been in business for over 25 years and thus have a long list of satisfied consumers. Being specialists in waterproofing, they offer a wide range of services, such as;

– Waterproofing basements and foundations.
– Sealing concrete
– Repairing leakages
– Installing drain systems

Their team comprises of experienced professionals who are dedicated to providing top-quality service. They are always up for a challenge, no matter how big or small the project. City Wide Group takes pride in their work and always strives to surpass the client’s expectations. They are dedicated to offering value for money and always work within the budget.

They also use a 100% complete satisfaction warranty on their work. If you’re looking for a dependable and experienced waterproofing company, then City-Wide Group is definitely worth considering.

Consumer Reviews

“My 100-year-old house foundation was suffering from several cracks and other issues, so, after a little bit of research and assessment, I opted for an exterior waterproofing service provider. My experience with City Wide was outstanding from start to finish. Jamie brought outstanding proficiency to the task, and his communication, persistence, and attention to information were all unmatched. His crew showed the utmost professionalism at all times. They arrived at my property on time; they displayed great care in their thorough work around the structure of my house; and they cleaned up perfectly. The comfort that comes from this job well done was worth every cent. I would not hesitate to recommend City Wide to anybody with water-related problems around their structure.” – Katherine In.

“After getting exceptional work for the waterproofing of my basement (I likewise did an evaluation), my contractor advised me to get a backwater valve set up. Tony, the experienced service technician, suggested that I change my drain and set up the valve inside the house rather than outside where it would be pricier to install. Our home does not have a problem with sewage system backups. The work was completed in one day. Tony showed up with the other team members. They were exceptionally friendly, proficient and tidied up thoroughly after themselves. The work was a masterpiece with regards to the cement that they put down around the drain and plastic diamond cover. I highly recommend this company!” – Paul H.


6. Dryshield Waterproofing Corporation

Dryshield Waterproofing Corporation

  • Services: Basement waterproofing, external waterproofing basement leak repair, sump pump installation, wet basement repair, spray waterproofing, blindside waterproofing and waterproof foundation
  • Contact Details: 416 361 3323
  • Location: 60 Millwick drive, Toronto, ON M9L 1Y3

Dryshield Waterproofing Corporation is a leading service provider of wet basement waterproofing services in Toronto. They offer a variety of services, comprising basement waterproofing, foundation waterproofing, and roofing waterproofing.

Dryshield is a family-owned and operated organization that has been supplying quality waterproofing services for over 25 years. They have a team of experienced specialists who are committed to ensuring that their customers get the best possible service.

A member of the Better Business Bureau (BBB), Dryshield Waterproofing Corporation has an A+ rating. This ranking is based on factors such as the variety of waterproofing problems submitted by the company addressed, the time to deal with those grievances, and the overall fulfillment of customers.

Consumer Reviews

“I was overwhelmed with the service I got from the DryShield. My basement has remained dry and smells great. I couldn’t be more satisfied. The job was completed on time in just four days and really expertly. Thanks to Dryshield team for all their effort. I would extremely advise this company!” – Elena Vinogradsky

“We just bought a home and learnt that it had a history of water damage in the basement. We wanted this repaired before it ends up in the basement. Dryshield provided us with a great quote and shared great reasons for doing both interior and exterior waterproofing (other business tried to offer us on external which in this case was not required).

Dry guard maintained all the crucial covid safety measures, and helped my family feel safe. The project was completed early enough and everyone who worked here was remarkably nice and useful. Likewise, it’s important to point out that on the next weekend we had 50 ml of rainfall and I heard the pump start and it ran for about 2 minutes, it was great to understand the system that was just set up was currently working to save our basement from water damage.” – Ramana Hrciuk


7. Direct Waterproofing

Direct Waterproofing

  • Services: Exterior waterproofing, interior waterproofing, basement lowering, foundation repair, weeping tile installation, French drains, sump pump installation
  • Awards and Recognition: Best quality guaranteed
  • Location: 4 Faversham Crescent, Toronto, ON M9C 3X4, Canada
  • Contact details: 416-454-7575

Direct Waterproofing is another top waterproofing company in Toronto. They have over 25 years of experience waterproofing basements, foundations, and keeping walls. Their team of professionals is committed to ensuring that your residential or commercial property is properly waterproofed, with the task being done right the very first time.

They provide a wide range of services, comprising basement and structure waterproofing, concrete repair work and sealing, and crack injection. They likewise provide a lifetime guarantee on all their work, so you can be sure your property is secured for several years to come.

If you’re looking for a trustworthy and knowledgeable waterproofing company in Toronto, Direct Waterproofing is your best option. Contact them today for a free assessment!

Consumer Reviews

“I was pleased with the great work that Terry and his group did. They were extremely effective and thorough in their timelines. Even whilst working and digging, they showed tremendous respect to the surroundings and maintained a tidy environment. They also took my feedback and issues into consideration and changed to make sure that I was really satisfied with the work. Terry regularly sent me pictures of the progress they made, as I could not check out the website daily. It’s also quite great that they did not request any deposit upfront and yet worked so vigilantly. It allowed me to trust them. I would extremely advise.” – Andam Group


8. Royal Work Basement Waterproofing

Royal Work Basement Waterproofing

  • Services: Basement underpinning, backwater valve installation, drain cleaning and repair, foundation repair, French drains, sump pump installation and battery backup installation.
  • Location: 230 Queens Quay W, Toronto, ON M5J 2X1, Canada
  • Contact details: (416) 837-1077

If you’re looking for a reliable and accomplished waterproofing company in Toronto, then Royal Work Basement Waterproofing is among the best choices you have. They have been providing quality services to property owners in the city for over two decades and have a proven track record of success.

Royal Work Basement Waterproofing is devoted to providing its clients with the highest quality services possible, and they use state-of-the-art and sophisticated innovations and techniques in their work. They likewise have a group of skilled and knowledgeable experts who can handle any waterproofing task, big or small.

So, if you’re searching for a reliable and credible waterproofing company in Toronto, Royal Work is certainly worth considering.

Consumer Reviews

“I have never been more contented with experts at my home. Nazar was incredibly responsive with all of my concerns and provided us with a really reasonable rate and proposition. Michael and his team were extremely kind, effective with waterproofing our house. Whoever gave them less than 5 stars needs to come back and change their rating. What an incredible group” – Michele Molino

“We had a wet basement in February. We sought advice from 3 companies to learn the source of water and just Anatoliy fro, Royal Work Basement Waterproofing could clearly explain what going on was. Then I got quotes from 2 companies for the task. Again, Anatoliy not only provided us the best rate but also looked into the cosmetic part of the finishing while other company suggested we needed to install a pump with the bare drain pipe at the center of our basement.

They completed the task in 2 days, and Anatoliy was easy to access throughout the project. Our basement was able to overcome severe rain falls recently. I highly recommend this business.” – Eri Maeda


9. Canada Waterproofers

Canada Waterproofers

  • Services: Basement waterproofing, exterior waterproofing, interior waterproofing, backwater valve and sump installation, sewer backup and snaking, underpinning services and basement lowering, drain repair and plumbing services.
  • Awards and Recognitions: Homestars best of Award, Trusted Pros (Rated and Recommended)
  • Contact Details: 416-333-LEAK (5325)
  • Address: 43 Hanna Ave Suite 425, Toronto, ON M6K 1X1

Canada Waterproofers is another highly-rated waterproofing company in Toronto. They have been in business since 1978 and have a long history of supplying quality waterproofing services to their customers. They are a family-owned and operated business and take pride in their work.

Canada Waterproofers is a full-scale basement waterproofing in Toronto company. They offer a wide range of services, comprising basement waterproofing, foundation waterproofing, roofing system waterproofing, and more. In addition, they also use a wide range of products, comprising drain systems, membranes, coverings, and more. As a company that has been in the business for many years, they have the experience and know-how to handle any waterproofing project, big or small.

Canada Waterproofers is dedicated to providing quality service at a fair rate. They offer free quotes and will work with you to find the best service for your needs. The company also offers a 100% satisfaction guarantee on all of its services.

Canada Waterproofers is a great choice if you are looking for quality wet basement waterproofing services. They are one of the most knowledgeable and trusted companies in Toronto and regularly deliver quality results. Contact them today for a free estimate!

Consumer Reviews

“I reached out to CW because I was eager to underpin my old home in old Milton as I had 6 inches ceiling and wanted them to increase the roof to 8 inches. Carl was very resourceful and explained the underpinning procedure in-depth. I found that I needed to get an approval prior to starting the project. Carl recommended a structural engineer who helped me in acquiring the permits needed.

CW’s quotes were modest and their communication was quick and informative. Keep In Mind: Canada Waterproofers were the only company that provided a total estimate for the entire project. Other companies that I reached out recommended I work with a plumber or General Specialist first before they could begin the assessment.

Work started on time and the two experts from the company (Andrew and Stas) worked incredibly hard until the job was done. They constantly informed me of the work’s progress and any concerns that I had actually been dealt with right away. This is a highly professional business, and their work has been first class. I highly recommend this water proofing company!” – Clinton Christian

“We scheduled an at home evaluation. Valentin suggested we purchase replacement valve or faucet because when we described the problem, he specified that it was the faucet or valve.

Valentin kept us on the loop before his arrival, and his service delivery was exceptional and prompt. He was extremely helpful and quickly completed the job! Highly recommend!! He even followed up a few days later on to ensure that everything was working well!” – Kate K.


10. RCC Waterproofers

RCC Waterproofers

  • Services: Basement waterproofing, exterior waterproofing, interior basement waterproofing, sump pump repair and installation, basement lowering, waterproofing foundation repair.
  • Contact Details: 1-888-766-2071
  • Address: 4101 Steeles Avenue West, Suite 201 Toronto, Ontario M3N 1V7

RCC Waterproofers is a family-owned and operated organization that has been providing waterproofing services in the Greater Toronto Area for over 50 years. They are one of the most reliable and trusted waterproofing companies in Toronto.

Their experienced specialists are dedicated to ensuring that your property is correctly waterproofed and protected from moisture damage. RCC Waterproofers provide a wide range of waterproofing services, including basement waterproofing, structure waterproofing, roof membrane installation, and more.

They use just the highest quality products and products offered, and their group of knowledgeable specialists will ensure that your residential or commercial property is properly waterproofed and secured from moisture damage.

If you’re looking for a dependable and skilled waterproofing company in Toronto, then RCC Waterproofers are the perfect choice. Contact them today for more information about their services or to set up a consultation.

Consumer Reviews

“Mauro assessed our residential/commercial property and could figure out which parts of our home had a leakage. He was extremely quick with his responses. He recommended a different specialist (NOT associated with RCC) that would help us detach our a/c however, we found him quite unreliable. So, we opted for another contractor that we were referred by a close friend.

Ryan and his team were incredible! They found the issue and performed the repairs in ONE day and took tons of images for us to view after it was done. They managed to put everything back (piece stones) in its original position and probably made it look nicer, too! Mauro and Ryan were excellent and we highly recommend them to our friends and families.” – Alexandra Fung

“From the moment our RCC Representative Justin visited our house to investigate and provide insights and a quote for waterproofing work, it was quite clear that we had actually made the best choice. Justin handled everything with the utmost professionalism and kept us on the loop the entire time.

On the agreed date, the team was right on time and the team leader did an outstanding job keeping me updated on each step of the repair process. This included taking images of each procedure and making the images readily available to me for my records … really excellent! They completed the work professionally, tidying up of all work spaces. Kindly do not hesitate to settle for RCC. Thanks once again Justin and Team RCC” – Greg Kesseler


Waterproofing FAQs

What could cause my basement to be leaky, musty or damp?

There are many causes of dampness or water infiltration. The resulting hydrostatic and lateral pressures can often force water into basement walls or under foundations, causing damage and causing leaks. Heavy rain or snow can lift the water table and rise.

Installing tile drains or French drains can divert groundwater away from your home’s foundation to reduce pressure. Unfortunately, clogged, broken, improperly installed or poorly maintained water pipes can back up and flood your basement.

Even the quality of windows can affect how much penetration moisture can have. Caulking and weatherstripping around the window frame may be missing or damaged. Water can collect in window drains if debris blocks the water and drains into the basement.

Is a white chalky substance on my basement walls dangerous?

Efflorescence is a seasonal problem, usually caused by water in the ground and dampness. Porous concrete can be susceptible to water migration through the walls. When the water reaches the surface, it evaporates and leaves sediments. The slow evaporation of water in wet weather increases the risk of efflorescence growth.

Moisture penetrates through the foundation floor’s walls to cause the crushed stone’s chemical breakdown. Efflorescence weakens the concrete and, if ignored, can affect the wall’s structural integrity. We suggest several treatments that can be used to prevent efflorescence by reducing surface moisture.

What will happen if I decide to hold off on getting my basement fixed?

Ignoring basement problems doesn’t mean they go away. It is actually quite the opposite. Worse yet, ignore any problems that may arise and finish your basement, which can be a nightmare!

In addition to obvious water damage, constant dampness and excess moisture in the basement can lead to mould growth, which is associated with numerous health risks. If you’re worried, you might have problems on the pitch. Or, if you’re thinking of finishing your basement, don’t hesitate to call in the professionals.


This concludes our list of the top basement waterproofing companies in Toronto. We hope our list helps you decide which business to hire to end the constant flooding in your basement. If you know of another basement waterproofing company that provides high-quality services, please let us know by name. In the future, you will find their names here if we find them appropriate.


Basements are arguably one of the most neglected parts of any house. When they start leaking, they can cause a lot of damage. A wet basement is not only a nuisance but can also result in the development of moulds and structural problems. If you’re dealing with a damp basement,…