Exterior Basement Waterproofing Toronto & GTA
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Exterior Basement Waterproofing Services in Toronto
Basements are frequently overlooked because they are among the least utilized areas of a house. However, the truth is that basements require just as much attention, if not more, as other parts of the house. Serving as the literal foundation and structure of your home, a well-maintained basement can work wonders. Unfortunately, many people fail to consider their basements and often leave them neglected. As a result, when basements begin to leak, mould can develop, leading to significant damage to the foundation. Moreover, years of neglect can result in cracks in basement walls, causing water seepage problems and substantial harm to the foundation structure.
GJ MacRae is a basement waterproofing company in Toronto, and we have been providing basement waterproofing services for almost 50 years. We are a complete basement waterproofing and structural foundation repair company specializing in exterior foundation waterproofing services. We provide exterior basement waterproofing services in Toronto and surrounding areas and ensure your basement is dry and free of leaks.

The Exterior Basement Wall Leakage Problem
So, where does the problem start? Many older homes need a proper waterproofing system installed around their basements, starting with adequate drainage maintenance. All the rain and groundwater around our house begin to get sucked inside the ground and slowly reaches the concrete basement walls. The water then starts to get inside the basement through various cracks. This leads to water damage and also starts to deteriorate your foundation walls. Mould and mildew grow, and the basement smells musty and damp. This mould practically makes the basement unusable. In the worst-case scenario, your foundation walls start to get even more cracks due to hydrostatic pressure, which can jeopardize the entire structural integrity of the basement and your foundation. And trust us, you do not want that!
But you have nothing to worry about if you consult a professional exterior basement waterproofing company in Toronto like GJ MacRae because we have reliable solutions to your basement issues. We use the latest basement waterproofing techniques to dry your basement walls. Plus, waterproofing basement walls from the outside means no water can enter your basement, and therefore, you can avoid all the external basement wall waterproofing problems.
Benefits of Exterior Basement Waterproofing
Now that you know how important it is to waterproof your basement, let’s discuss the significant benefits of waterproofing basement walls from the outside or exterior.

No More Basement Flooding
One of the most significant benefits of proper exterior basement waterproofing is that your basement doesn’t flood when it rains outside. Trust us; you do not want your basement to be attacked because it is challenging to get that water out of your basement once it’s already there! With proper, high-quality basement waterproofing, you do not have to worry about all this because excess water cannot enter your basement and stays dry. Also, many people lose valuable items to basement flooding, which is not a problem with a dry basement.

Say Bye to Mould and Mildew
Mould and mildew thrive in damp basements. It looks awful and is a severe health concern; a wet basement invites this bacteria growth. But with exterior basement waterproofing, your walls are dry, and it is very difficult for mould or mildew to grow in such situations. Also, you eliminate that unpleasant, musty smell caused by a damp basement.

More Space
There isn’t much one can do in a wet basement. You can’t store anything or renovate. So, it’s practically inhabitable and nearly useless if wet. But a dry basement has many options! You can use it as a store room, game room, or even to set up a bedroom or apartment. Suddenly, extra space is available in your house just because you decided to waterproof your basement.

Improved Structural Integrity
Continuously being wet and dry can take its toll on your concrete foundation or basement walls, and the hydrostatic pressure from the outside doesn't help either. Years of this can destroy your foundation walls and may cause serious problems. But a dry and waterproofed basement eliminates the risk of leaks in your basement walls. Therefore, dry basement walls suggest that your basement foundation and structure are strong and that the structural integrity of your basement is maintained.

Higher Property Value
As a property buyer, you will always look for a house with extra space and a dry basement. Therefore, investing in waterproofing your basement has a much larger return on investment and can secure you good value when selling your house.
Our Exterior Basement Waterproofing Process
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The first step in the exterior basement waterproofing process is to excavate around the entire perimeter of your house. Additionally, we can use hand excavation to ensure minimal damage to the foundation.
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Next, we cleaned the entire basement walls with a wire brush and prepared them to be coated with primer. We then use hydraulic cement to seal the cracks. A quick-drying primer is applied, which provides extra adhesion to the wall.
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After the cracks are sealed and dried, we apply a rubberized membrane to the entire foundation wall. These rubber membranes are airtight and waterproof, meaning air or water cannot pass through them. Sometimes, we apply another layer of a rubberized membrane for extra protection.
04
After the patch is set, we install a drainage system in the form of weeping tile. This step is crucial as it redirects excess water and hydrostatic pressure away from the foundation walls. We then cover the drainage system with clear gravel for long-lasting results.
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After the installation of the drainage system, the backfilling process starts. We like to power-tamp the soil every 6-10 inches. This helps us to really lock the membrane in place and also to restore the original grading.
Why Choose GJ MacRae?
- Highest Rated Customer Service: Customer satisfaction is our primary goal. We will work with you closely to understand your needs and provide the best solution to your foundation repair project.
- Comprehensive Services: With GJ MacRae, homeowners can find all foundation repair solutions under one roof. From foundation crack repair to exterior waterproofing and weeping tile installations, we have the expertise and resources to address your complete waterproofing needs from start to finish.
- Extensive Experience: With nearly 50 years of experience in the industry, GJ MacRae is known for delivering quality, long-term basement waterproofing solutions while tackling even the most challenging waterproofing projects with confidence and expertise.


Protect Your Foundation
- Competitive Pricing: GJ MacRae offers competitive basement waterproofing services without compromising quality. We provide transparent, fair quotes that ensure homeowners receive the best long-term value.
- Quality Materials: GJ MacRae uses high-quality repair materials combined with the latest waterproofing techniques, and we are experts in all phases of basement waterproofing. Plus, we offer innovative solutions that guarantee long-lasting protection against water infiltration.
- Protect Your Investment: When protecting your foundation walls and basement from water damage, choosing GJ MacRae Foundation Repair for basement waterproofing in Toronto ensures you receive the highest quality repair solution to safeguard your foundation long-term.
Basement Waterproofing and Foundation Repair Projects in Toronto and the GTA
A Word from Our Customers
The Impolite Canuck2024-10-27 GJ MacRae did an amazing job on my cracked foundation. Highly recommend. Guys were professional, punctual, courteous, informative and left zero mess. They even fixed some rod leaks I discovered after the second deluge last August at no extra charge. Peggy Smith2024-08-25 Very happy with a recent job completed by GJ MacRae Foundation Repair at our home. The service was excellent, the owner and working crew were very courteous and knowledgeable about their trade. They completed the work on time and on budget and they did a great job! I would highly recommend this company for any foundation/basement you may have. bklodt2024-07-15 Used GJ MacRae for a foundation repair at our heritage house built circa 1894. The experience was positive from the quoting through 3 days execution of the work. Was done on time and on budget with a hard working crew who were experienced and left behind a strong and waterproof block wall. Gavin the owner was a pleasure to work with. Would use them again if ever needed. Lisa Kemp2024-07-15 G J MacRae installed a sump pump in my house to help with a water problem in my basement. The workers were professional and knowledgeable and took care with the quality of their work. They did an excellent job. I’m very happy with the result and would recommend them. Kyle Yamamura2024-06-21 Highly recommend the team at GJ MacRae. Excellent quality of work and customer service - which is hard to find these days. The waterproofing of my basement was fast, clean and effective - all at a very reasonable price. Thank you! Malique Ouedraogo2024-06-15 GJ MacRae repaired the foundation of my parents-in-law place in May of 2024. They had had a leak for quite some time and even with the heavy rains we had in late May/early June, their basement is now 100% dry. The team was courteous, patient with questions and very honest. They were reliable workers - showing up on time, cleaning up after themselves and tried to be as unobtrusive as they could when working in the house. They worked with a high level of integrity. My parents-in-law would highly recommend this company. Paitra VB2024-06-13 Dean and the team from GJ MacRae were great! Dean was super quick to reach out and come and check out our crawlspace where it was leaking, and got his team in as soon as possible to fix it up. Would definitely use them again! David2024-06-10 GJ MacRae went above and beyond to get our project finished. We're very grateful for their dedication and excellent workmanship! Kent Parker2024-05-25 We love in an attached house in downtown Toronto. A neighbour’s recent renovation to a shared wall uncovered an encroachment issue from 1948 that required us to move our footings. After a few quotes, we decided to work with GJ MacRae Foundation Repair. From the quoting process, careful planning and execution, their work was flawless, expertly explained and done to our (and our neighbour’s) satisfaction. Would 100% recommend.
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Need Exterior Basement Waterproofing in Toronto? Give Us a Call!
A seasoned homeowner knows the importance of basement waterproofing, and we are just the right team to get your basement waterproofed. We have been serving the GTA for over 48 years and can provide the best solution for your basement.
If you are someone who has a leaky basement, give us a call. Schedule an appointment, and our team will arrive to inspect your situation and provide you with a solution. We also service Oakville, Mississauga, Burlington, Hamilton, Milton, Georgetown, and Toronto. We provide basement waterproofing services all year round. If you notice any signs of seepage or water leaking, call (905) 824-2557. Or, you can fill out the form below, and we will contact you as soon as possible.

Our Service Areas
At GJ MacRae, we take pride in extending our services across the GTA to meet our valued customers’ unique needs, and our dedicated team is committed to delivering top-notch solutions all year long. Our expansive service areas are a testament to our unwavering commitment to the highest quality foundation repair services and customer satisfaction in the GTA.
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Fill out our request form and we will contact you as soon as possible for a free foundation repair consultation!
Frequently Asked Questions
Waterproofing the basement from the outside ensures that water cannot enter the basement walls and cannot damage the concrete foundation. Waterproofing basement walls from the outside ensures that your concrete walls are dry and mould-free.
Most leakage problems arise from the outside, but waterproofing your basement from both outside and inside keeps your basement secure permanently from rain and water seepage.
A drainage system like weeping tile ensures that the excess rainwater inside the soil is adequately collected and redirected away from the foundation walls. A rubberized membrane blocks water from entering your foundation wall but doesn’t offer much when moving water away; hence, weeping tile drainage comes into play.
You do not need to move out of the home during a basement waterproofing repair process. The complete project is carried out outside your home, and you can live peacefully inside while the work is done outside. No heavy machinery is involved as we like to use hand excavating to dig up your foundation wall from the outside.
Expert Waterproofing Services for Your Home
GJ MacRae Foundation Repair has been the industry leader for reliable basement waterproofing in the Greater Toronto Area Since 1975. Nearly five decades of experience inform our proven multi-stage repair process based on below-grade drainage considerations that allow us to waterproof concrete blocks, poured walls, and stone rubble foundation walls properly for the long term. Our repair solutions for leaking foundation cracks include using bitumen-based barrier membranes and high-efficiency weeping tile systems, which give us the edge in reliability and allow for the most robust foundation repair warranty available today in the GTA. Experience the GJ MacRae difference for year-round basement leak repairs in Toronto, Oakville, Mississauga, Burlington, Hamilton, Milton, and Georgetown. If you spot cracked foundation walls, leaky foundations, or any other basement waterproofing issues in your house, reach out and call us today at (905) 824-2557.