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Basement Waterproofing Toronto

Thousands of Happy Clients & Counting

Welcome to Aquamaster Basement Waterproofing Toronto. Serving clients all around Southern Ontario since 2009. Fully licensed & insured team, quality workmanship, competitive pricing, and top-quality materials are a part of everything we do. Our team can help with waterproofing, foundation repairs, basement underpinning and a lot more.


Book a free on-site estimate today!

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Built to Last for Decades

Home Stars 300+ Reviews for Basement Waterproofing Solutions
Basement Waterproofing Best of Award Winner in 2019, 2020, 2021
25-Year Waterproofing Warranty Badge
Google 200+ Reviews for Basement Waterproofing Services
BBB Accreditation - Reviews for leaky basement Services Toronto
Aquamaster Basement Waterproofing Contractors team in Toronto office

Hire Basement Leak Repair Experts in Toronto

First Choice for Basement Waterproofing in Toronto

True experts in what we do. Our team at Aquamaster Basement Waterproofing has the expertise and equipment to handle any type of basement repair project. From repairing small leaks, or wet and leaky basements to crack repairs and major structural damage projects like underpinning, bench footing, and more. 

Trust our decades of experience and flawless process to take care of your project. Start today with a free on-site estimate!

Basement Waterproofing Cost Toronto

How Much Does it Cost?

An average basement waterproofing project in Toronto & GTA costs from $70-$350 per linear foot with an average price of basement waterproofing of $100 per linear foot. The specific price will depend on the waterproofing method, depth of the foundation, extent of the foundation damage, and scope of the project and waterproofing materials used. Aquamaster Basement Waterproofing can help select the right basement waterproofing service for the right price. For example, the average cost of Interior Waterproofing is $70, while Exterior Waterproofing often costs $90. If you decide to go the Foundation Repair route, you can expect to pay $1,500-$3,200 depending on the depth of the crack. While Sump Pump Installation will cost around $500, Window Well Installation - from $1,600, and Battery Backup Pump price starts from $1,200. 

Learn More About Cost

How Long Does Basement Waterproofing Take?

How Long Will my Project Take?

Basement waterproofing services can take anywhere from 1 day to 2+ weeks to complete. The specific duration of the project can be estimated during the free on-site consultation. Types of service, materials, how easy it is to access the basement and other factors can impact the duration of a project. Internal Waterproofing typically takes up to 2 weeks, Exterior Waterproofing also takes about 2 weeks, Wall Crack Repair - 1 day, while Foundation Repair time varies depending on the extent of the damage. Bench Footing will take about 5 weeks to complete, similar to Basement Underpinning services. Window well installation normally takes 1-2 days, while Crawlspace Encapsulation will take 3-10 days. If you are looking for a Basement Walkout Construction you can expect your project to last about 4 weeks.

Learn More About Timelines

Our Basement Waterproofing Projects Often Include

Popular Basement Waterproofing Services in Toronto

Infographics showing what problems basement waterproofing services can solve - basement leaks, wet walls, floor, water seepage and more

When designing your project, our team of waterproofing contractors will consider a number of factors – the location of the property, how much groundwater is in your area, the extent of water damage, your plans for the property, your budget, and more. Depending on these factors we will recommend the right basement waterproofing services.

Example of Exterior Basement Waterproofing Project in Toronto, near CN Tower

External basement waterproofing is a method of preventing water from entering a building's foundation or basement walls by creating a waterproof barrier on the outside of the structure. This barrier is designed to prevent water from penetrating the walls or foundation and entering the building, which can lead to water damage, mold, and other issues.

This methodology typically involves excavating the area around the foundation, repairing wall cracks, french drain installation, backfilling the trench and landscaping.

Exterior Waterproofing Cost - $100-$300/linear foot

Basement Underpinning Project in Progress near Nathan Phillips Square in Toronto

Basement underpinning is a construction method that involves strengthening the foundation of a building by increasing the depth or width of the foundation. This is typically done by excavating underneath the existing foundation and installing additional supports, such as concrete or steel beams, to increase the load-bearing capacity of the foundation.

Underpinning is often used to stabilize foundations that have been weakened by soil movement, settling or other factors. It can also be used to increase the height or depth of a basement, allowing for additional living space or storage.

Basement Underpinning Cost - $85-$450 per linear foot

Waterproofing Contractor Installing a Window Well

Window well installation refers to the process of creating a secure and functional enclosure around basement windows or below-grade windows that are partially or fully below ground level. Window wells serve multiple purposes, including providing natural light, ventilation, emergency exits, and access for maintenance and escape.

Window Well Installation Cost - $1,600-$4,000

Plumbing Rough Ins Installed in the Basement

Basement plumbing rough-ins & basement bathroom rough-ins are some of the most popular services along with new construction waterproofing. They involve our team of Aquamaster waterproofing contractors installing pipes and vents for the plumbing system in new construction projects. This service involves routing pipes through wall cavities, running vent stacks to the roof, laying underground pipes, and installing fixtures and end elements etc.

Example of Interior Basement Waterproofing Project

Internal waterproofing is a method of preventing water from entering a building's basement or foundation walls by installing a waterproof barrier on the inside of the structure. This barrier is designed to prevent water from penetrating the walls or foundation and entering the building. It is important to note that internal basement waterproofing doesn't prevent water from entering the foundation walls, but helps manage the water that has already made it through. 

Interior Waterproofing Cost - $70-$350/linear foot

Basement Wall Crack Repair in Progress

Cracked basement walls or floors will almost 100% lead to water leaks or even worse. After the basement cracks are detected, we will go for foundation crack repair. Foundation cracks will be injected with an epoxy-resin solution that bonds the pieces of the concrete foundation together. While larger basement wall and floor cracks may require other repairs.

Foundation Crack Repair Cost - $1,500-$3,200


Basement leak detection services are the first step our team will take before the leak repair. Pipes, basement wall cracks, and many other issues can create wet or damp basement walls & floors. Our team has all the necessary equipment and training to identify the source of the leak and repair it.

Waterproofing Contractors installing a weeping tile in front of CN Tower

A weeping tile, also known as a drain tile or french drain, is a porous pipe that is used to manage groundwater around a building's foundation. The pipe is typically made of plastic or clay, and is installed around the foundation.

The purpose of a weeping tile is to collect groundwater and divert it away from the foundation to prevent water damage and flooding. Ask our experts how your property can benefit from weeping tile installation or cleanout services!

Sump Pump Installation and Battery Backup Replacement Example

Sump pump installation is often a part of interior basement waterproofing. Sump pumps are mechanical devices that are used to remove excess water from the basement or crawl space of a building. It is typically installed in a sump pit, which is a hole dug into the basement floor or crawl space. The sump pump is designed to automatically activate when the water level in the sump pit reaches a certain point, and then pumps the water out of the pit and away from the building. A sump pump is a common element of internal waterproofing systems.

Sump Pump Installation Cost - $500-$3,600

Installation of Backwater Valve or a Backflow Preventer

A backwater valve, also known as a backflow preventer or sewer backup valve is used to prevent the reverse flow of wastewater or sewage into a building's plumbing system. Heavy rainfall, flooding, or a blockage in the public sewer system, can cause

sewage or wastewater to back up into the building causing water damage and contamination.

A waterproofer sealing the crawlspace of a building

If your property has a crawlspace, you need to take care of it. Due to the difficulty of the task, crawlspaces often don't have concrete floors, as a result, moisture can enter the space causing foundation damage, mold growth, and poor air quality on your property. Our team can help seal the crawlspace, install a dehumidifier, or convert the crawlspace into a full-sized basement. If you have a crawlspace, ask us how to make the most out of it!

Example of Basement Walkout

Walkout basement construction is an excellent way to add functionality to your basement and allow better ventilation, sun, and more. Walkout basements are a popular investment for property owners who are looking to increase the value of their property or make their basement into a more functional space or even convert it into a rental with a separate entrance. 

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Team of Waterproofing Contactors who work at Aquamaster Waterproofing

Common Waterproofing Problems in Toronto

Signs that you Need Basement Waterproofing Services

Aquamaster Basement Waterproofing can help with a number of services, all designed to prevent wet basement problems & repair basement leaks. Depending on the specific source of the leak, your project can include a variety of leaky basement services. Our team is here to help with waterproofing projects of any difficulty in Toronto, Metro Toronto, Downtown Toronto, Scarborough, Richmond Hill, Hamilton, Oakville, Mississauga, and other locations throughout Ontario.


Our team of basement waterproofing contractors is here to help repair existing leaks and help you keep the water out of your basement. Here is some of the wet basement repairs we work on most often:

  • Water Coming Up from the Basement Floor – a common problem to have. There is a number of potential causes of this problem, with groundwater being one of the common ones.

  • Wet Basement Walls or Floor – if walls or floors in your basement feel damp when you touch them, there must be something causing this. In scenarios like this, our basement waterproofing contractors often start with leak detection services. Once the source of the leak is identified we repair the cause of the leak.

  • Tie Rod Leaks – tie rods are used to hold together the form for foundation pouring. Once the tie rods are removed, this leaves a hole in the foundation that may allow water to enter the basement.

  • High Humidity – one of the signs of basement leaks is high humidity. Moisture makes it through the foundation and humidity in your basement increases.

  • Musty Odor – may be a sign that your basement has mold or fungi in your basement. Mold & fungi prefer high-humidity environments and wet basement problems may lead to mold growth over time. If you hear a musty smell in your basement, you should consult an expert.

  • Wet Wall Stains – water can make it through the basement wall cracks, through a leaking window well, or through another source. If it does, you will likely see basement wall leaks. This is a sign that you should talk to waterproofing contractors.

  • Basement Leak Prevention – ideally, waterproofing should be used to prevent basement leaks before they happen, as opposed to leak detection & repair after they happen.


If you are looking to protect your basement & your property from potential water damage, Aquamaster Waterproofing is here to help. Get one of our experts on the phone today & start with 10% OFF!


Waterproofing Products we Use

Basement Waterproofing Materials in Our Projects

The quality of waterproofing depends on a number of factors. Waterproofing materials, quality of workmanship, process. If you are looking to get lasting results, everything counts.

That's why we use top-quality basement waterproofing materials in all our projects. Aqua Bloc 770-06 liquid waterproofing membranes, Delta MS Air Gap, DMX Drain, Parging Mix, top-quality 3/4 inch limestone gravel, Bakor 990-06 yellow Jacket Fibre Mesh and so much more.

This is not our first rodeo, over the years we've perfected our waterproofing & quality assurance process, we use some of the best waterproofing materials on the market. So you can rest assured that your basement waterproofing will be done to the highest quality! Book a free estimate today & discuss materials that would best fit your needs with our waterproofing contractors!

Don't Take Our Word for It!

Basement Waterproofing Testimonials


I used Aquamaster for two separate home waterproofing projects and I was extremely satasified with their work and price. Their team are highly skilled, thorough and were able to complete the 10.5 hour job in one day. They were even kind enough to seal my window frame after I noticed a minor leak. I would highly recommend Aquamaster for all your waterproofing and plumbing needs.

Stephanie G.

Residential Client

The Aquamaster team is absolutely fantastic! They went above and beyond to diagnose and correct the problem that I had with my basement plumbing caused by old pipes and persistent tree roots. I used them once in 2012 and in 2020. I cannot say enough good things about this team - highly recommend.


Felicia F.

Residential Client


Chris D.

Residential Client

Aqua Master quoted me a very fair price for waterproofing and finshed the job ahead of schedule. We haven't had any water issues in our post-war hm since then. Highly recommend this business for its professionalism and quality of work. Hire with confidence!

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What are your Service Areas?

Proudly Serving Greater Toronto Area & Beyond!


King City








Port Perry

And Southern Ontario...

In the News

Media About Aquamaster Basement Waterproofing

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Why Choose Us?

3,000+ Happy Clients Chose Aquamaster


True Warranty Coverage

Work, materials and labour warranty for 25 years. Fully transferable from owner to owner.

24-Hour Emergency

Our emergency team is available 24 hours a day.


Licensed & Insured

Aquamaster team is fully licensed & insured to work in plumbing, concrete, underpinning and waterproofing.



We offer all our clients 10% Off their first Aquamaster service. Get the offer today!

In Business Since 2009


We've been around for a while. We will be around for a lot longer!

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Proudly Serving South Ontario

Aquamaster team is proudly serving multiple locations in Toronto, GTA and multiple locations in Sothern Ontario.


Best Materials

We always choose high quality materials because we want to provide high quality service.


Peace of Mind

Our processes are well-thought through, so you don't have to worry about it!

Waterproofing & Leak Repair Process


Discovery Call

Connect with one of our certified experts, so we can advise on the best way to approach your project.


On-Site Survey

More complex projects require on-site surveys, where a certified Technician will provide a no-obligation estimate.



We sign a contract that outlines details of your project.



We do the work, you get peace of mind and a 25-year transferable warranty.

Get a Free On-Site Waterproofing Service Estimate Today!

Unparalleled quality service, 25 years warranty, all available today with 10% off.

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