Waterproofing Basement Walls from the Inside: Interior Basement Waterproofing in Toronto

Are you experiencing issues with leaking basement? No need to worry, Gj MacRae is here to assist you with licensed and insured professionals for interior basement waterproofing solutions.

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Interior Basement Waterproofing Services
by GJ MacRae

“Quality is doing things right when no one is looking.” – Henry Ford

Interior Basement Waterproofing services in Toronto

Interior Basement Waterproofing Services in Toronto

How often are you in your basement? Other than doing laundry or throwing some items in storage you probably don’t go in the basement a lot. That just says how little importance we give to our basements. Without even living up to their full potentials, basements are being heavily underused. What if we told you that you can do a lot more with your basement rather than it just being a crawlspace or a laundry room. Water seepage, mould and mildew growing everywhere, musty damp smell, water flooding in during rains, and even possible pest infestation. The reason for all this? WATER LEAKAGE! This situation arises due to insufficient interior basement waterproofing, resulting in water entering through cracks in your foundation walls, and demanding basement leak repair. 

GJ MacRae is an interior basement waterproofing company in Toronto and we have been providing basement waterproofing and foundation repair services for almost five decades. We are a complete basement waterproofing contractors and foundation repair company that provides a total solution for a leaky basement and a crumbling foundation. We serve Toronto and surrounding areas and have been working for decades to deliver you a dry and leak proof basement. 

The Interior Basement Wall Leakage Problem

Many of us face problems during the rainy season when our basements start to flood. When the rain starts to collect around the house it starts to enter the soil and then into the basement through the foundation walls. Over the years, if left untreated, these basement walls start to develop cracks and small holes in them and the excess moisture and water from the rain starts entering our basement. Since the walls are porous and there is nothing to stop the water, your entire basement is now damp. And there are numerous problems that arise with a damp basement. Your walls start growing mould and mildew and badly deteriorate the air quality. Your walls start getting more cracks and with excess rain water entering the basement, you might have to bid farewell to your valuable items. On top of that, if this continues for some time, it can really start to damage the foundation walls and risk the entire structural integrity of your house.

leaky basement in toronto

That’s where we come in. We are a complete basement waterproofing company in Toronto and have been providing interior basement waterproofing services for the last 50 years. Interior basement waterproofing means that your basement remains dry, and you no longer have to face water seepage and leaking problems. Our highly effective interior basement waterproofing methods are backed by our experienced staff to give your basement another life by fully waterproofing it. Why keep a wet and musty basement when you can have a dry and leak-proof basement that is usable? Get affordable wet basement waterproofing services in Toronto by GJ MacRae. 

Interior Basement Waterproofing Strategies: Prevention of Interior Basement Wall Leakage

  • Effective Sealing: Apply waterproof coatings or sealants to basement walls to create a barrier against moisture intrusion.
  • Proper Drainage: Ensure efficient exterior and interior drainage systems to divert water out from the foundation.
  • Sump Pump Installation: Install a sump pump to collect and discharge water accumulating in the basement.
  • Gutter Maintenance: Regularly clean and maintain gutters and downspouts (Gutter Outlets/ Rainwater Pipes) to prevent water from pooling near the foundation.
  • Landscaping Adjustments: Grade the soil away from the foundation and consider using plants that help absorb excess moisture.
  • Foundation Repairs: Quickly address any cracks or gaps in the foundation walls or structure to prevent water from seeping in.
  • Window and Door Sealing: Seal gaps around windows and doors to prevent water infiltration during heavy rainfall.
  • Interior Waterproofing Systems: Install interior drainage systems and vapor barriers to manage moisture within the basement.
  • Regular Inspections: Conduct routine checks for leaks, cracks, and signs of water damage to address issues early.
  • Ventilation: Improve air circulation with proper basement ventilation to reduce humidity and moisture buildup.

Combining these approaches allows you to establish a complete shield against leaks in your interior basement walls. If these strategies prove insufficient, don’t hesitate to contact GJ MacRae for professional interior basement waterproofing in Toronto.

Benefits of Interior Basement Waterproofing

interior basement waterproofing

It goes without saying how important it is to waterproof your basement. We have years of experience in this field as a basement waterproofing company. Here are some major benefits of waterproofing the basement from the inside.

Enjoy a Dry Basement

Interior Waterproofing your basement means that you now have leak proof and dry basement walls. Doesn’t matter how much it rains outside, your walls are now sealed and water cannot enter your basement walls. Without waterproofed walls, your basement would flood heavily during rains and damage all the valuables in the basement. Hence, interior basement waterproofing allows you to enjoy a leak proof and dry basement. 

No More Mould and Mildew

Places that are damp and wet, invite mould and mildew and this is not a good combination! This invites various health hazards and poor air quality. A basement is a place that is poorly ventilated and on top of that, to have mold all over the walls is the worst thing you can ask for. But, with interior basement waterproofing, you get dry and leakproof walls. So, you no longer have to worry about mold or mildew over your walls.

More Usable Space

Having a dry basement means that you have now more usable space. Most basements are used just as laundry rooms and for storage and not much else. But a dry basement means that you can use the basement as your store room, gameroom, or a bedroom. If your basement isn’t tall enough, you can opt for basement underpinning for more headroom and a refreshed space!

Stronger Foundation Structural Integrity

Continuous hydrostatic pressure from outside can really affect the foundation’s structural integrity. Due to the pressure, the walls move in and out and that can cause the cracks to increase. All this can be avoided if you can keep your basement walls dry and leakproof. Properly sealing your foundation cracks and applying interior basement waterproofing systems will ensure that your walls are safe and strong from any kind of damage imposed by water. Having dry foundation walls means that the foundation’s structure is maintained. 

Higher Property Value

Getting a property with a large usable basement that is dry is what every property buyer is looking for. Everyone loves more space in their house and most buyers are willing to pay extra for houses with such features. Having a dry basement means that the space is now usable and hence a good selling feature for your homeSo if you invest in waterproofing your basement, you not only enjoy the basement while you live in the home but also get good returns when you are trying to sell. 

Tired of Dealing with Basement Wall Leaks? Find the Solution with Gj MacRae’s Expert interior basement waterproofing in Toronto!

Our Interior Basement Waterproofing Process


Step 1

The very first step in the Interior basement waterproofing process is to dig around the inside of your basement walls approximately 12” to 15” inches wide through the concrete floor. Then remove around 10 to 12 inches of soil from the trench. Small holes are drilled at the base of the walls to allow trapped water in the foundation wall to pass through into weeping tile or drains.

Step 2

The next step is to install a weeping tile drainage system at the base of the trench. This is installed to collect and drain away all the excess water coming off from the membrane and into a sump pump or floor drain. The excess water from the holes is also collected with the weeping tile drain.


Step 3

A drainage membrane is then installed all around the walls of the basement. This membrane helps to redirect the water towards the drainage system to redirect to a sump box or floor drain.


Step 4

Then, three quarters of the trench is filled with clear gravel. Gravel allows for rapid drainage and works well with the weeping tile drain. A sump pump is installed at an appropriate location to pump out all the water collected in the sump basin or a connection to an existing floor drain is made.


Step 5

The concrete floor is then reinstalled and the floor is ready. Now the cleanup is done. After the cleanup, the interior basement waterproofing process is concluded. You will now have a waterproof basement.

Frequently Asked Questions:

Waterproofing the basement from the inside ensures that your basement remains dry for half the cost of an exterior waterproofing repair method. Any excess water that enters in the basements is redirected away from the walls using weeping tile and sump pumps. 

The basement’s size, condition, and waterproofing technique can all affect how long and how much it will cost to waterproof a basement. If you want a more precise estimate, it is advisable to contact with a specialist.

Depending on the contractor, different waterproofing services may come with a warranty or guarantee. When choosing a contractor, it’s crucial to inquire about warranties or guarantees and to check the fine print before signing any contracts.

It’s difficult to give an exact time frame because the duration of the project depends upon various factors and might take anywhere from a few days to a few weeks. Only upon a proper inspection, we can provide you with a rough estimate of the time duration.

Costs may vary based on factors like size, damage extent, and methods. Generally costs around $75- $150 per square.

Choose the interior for minor issues and the exterior for severe infiltration or external causes. Consult professionals for the best approach.

Common signs include dampness, musty odors, water stains, efflorescence, or visible cracks on basement walls.

Properly executed interior basement waterproofing can provide long-lasting protection, but regular maintenance is advised to ensure its effectiveness over time

Interior basement waterproofing typically does not require extensive excavation. It focuses on managing water that has already entered the basement by installing drainage systems, sealing cracks, using sump pumps, and applying waterproofing materials on the inside walls.

Why Choose us?

GJ MacRae Foundation Repair proudly presents almost five decades of exceptional expertise in interior basement waterproofing in Toronto. We provide the best waterproofing solutions for your house basement and ensure they remain dry and leakproof for the long run! As one of Toronto’s best interior basement waterproofing solutions companies, we set the benchmark for quality. The expertise of our staff in waterproofing basements from the inside, combined with modern interior methods, ensures that your foundation walls remain free from moisture. As a completely family-owned business, we are now in our second generation and have served over 10,000+ customers to date. Our quality work and professionalism have led us to feature in Homestars, HGTV, and Google Guaranteed

We offer complete coverage of services, including exterior and interior basement leak repair in Toronto, structural foundation repair, french drain installation, weeping tile system installation, sump pump installation, underpinning, window wells installation, and complete structural foundation repair service.

15 years guarantee gj macrae

A Word from Our Customers

Joseph PastorJoseph Pastor
16:15 24 Jan 23
Excellent service from beginning to end. We would highly recommend this company. Dean assessed the problem (water leaking into our furnace room as a result of a window well that another company had incorrectly installed previously) and provided a thorough estimate detailing every aspect of the project. He then scheduled the job to be done before the big winter storm that had been forecast. The crew arrived exactly on time and completed the job, to the very best professional standard, in less than a day. We are so glad we chose G.J. MacRae. Thank you very much.
Lisa NeedhamLisa Needham
19:43 11 Nov 22
Amazing Service! GJ MacRae Foundation repair provided timely and superior quality service. Everything went exactly as planned from our initial consult and quote. Workers were on time, the quote was accurate and the work was high quality. We have a perfectionist contractor and he was incredibly impressed with Gavin and the team and he noted that the work was exceptional Inside and out on the project. The site was was clean and looked perfect when completed. Would highly recommend this service to our friends and family and others looking for this type of work! We can’t say enough good things and are so thankful!
16:24 11 Nov 22
Our second time utilising GJ MacRae Foundation; separate issues. Their professionalism and respect for their clients is highly commendable. Office team, sales and on-site crew all compliment each other.Highly recommend GJ MacRae Foundation company!
Kate PapadopoulosKate Papadopoulos
23:28 10 Apr 22
My fiancé and I can not say enough amazing things about GJ Mcrae. As first time home owners with water damage in our basement, GJ mcrae took care of everything so quickly and we’re extremely professional, reducing any worries we had. Would recommend this company over and over again. Dean was so easy with work with and continued to support us throughout the process. Thanks so much for the amazing job.
Adam DAdam D
19:38 11 Oct 20
We had GJ Macrae underpin our 1890s house in Leslieville over the summer. The team showed up on time every day, the project moved so smoothly. I wish I had another basement for them to underpin.Highly recommend GJ Macrae for any basement or underpinning work. The final result looks fantastic, we have a beautiful basement, with nice tall ceilings!The whole team was a pleasure to work with! 5 stars!

Industry-leading GJ MacRae Waterproofing Services

GJ MacRae Foundation Repair provides customers with top-notch basement waterproofing services in Toronto. There are various Waterproofing Services available such as Basement Waterproofing, Interior/Exterior Weeping Tile Systems, Sump Pumps Installation, Crack repair, etc. Over 48 years of experience and 10,000+ satisfied customers from Toronto, our licensed specialists are completely confident that we can guarantee the best results with the most reasonable price and warranty for each type of project request.


Basement Waterproofing Toronto

We specialize in basement waterproofing services for below grade concrete block, poured concrete, field stone, and rubble stone foundation walls. With over 48 years of service in the GTA and backed by the most reliable warranty in the business, see what the GJ MacRae difference is all about.


Foundation Crack Repair Toronto

Is there a crack in your poured, block, or rubble stone foundation wall, and is this crack allowing water to leak into your basement? Why do interior crack repair methods simply not work? Trust the experts and see why GJ MacRae Foundation Repair carries the most reliable crack repair warranty in the business.


Weeping Tile Systems Toronto

A century-old technology, reborn! Our services also include interior and exterior weeping tile systems coupled with deep insights and experience relating to all things drainage. Ask us about the difference between interior and exterior drainage methods and enjoy the benefit of our expertise!


Sump Pumps Toronto

Sump pumps and sump basins are an integral part of all below grade drainage strategies due to their simplicity, reliability, low cost and proven effectiveness. Ensure your sump pump, basin and battery backup system are well maintained and ready for the next big rain or thaw.


Structural Wall Repairs Toronto

Is the structure of your home moving and is this movement accelerating as the years pass? The sooner the integrity of your foundation is restored, the better. We have a full line of time-tested, certified structural foundation repair solutions tailored to your scope and budget.

crumbling foundations

Crumbling Foundations Toronto

Are your foundation walls spalling, eroding or fragmenting? Is this damage accelerating through the years? Stopping moisture penetration through your above grade concrete structure is imperative. We offer brush parging, s-type, adhesive, mesh, fiber and thermal-slurry solutions for a lasting barrier.


Basement Underpinning Toronto

GJ MacRae are pioneers of the overflow underpinning method in the Greater Toronto Area. Our underpinning process allows for safe, reliable vertical increases in basement ceiling height that can turn crawl spaces into full living quarters; and all for less than a standard second story addition.


Structural Carbon Fiber Toronto

When your foundation walls begin to show signs of cracking or bowing it is generally an indication of severe exterior lateral pressure from tree roots, hydrostatics or poorly draining soil. Click here to find out more about our full line of carbon fiber foundation reinforcement applications.

Window Wells

Window Wells Toronto

Basement windows are a great source of natural light and can also act as a designated fire escape, but what happens when window wells begin to deteriorate, clog and leak? Our hand excavated exterior window well repair solutions are permanent and allow for unimpeded drainage all year long, guaranteed.

Need Interior Basement Waterproofing in Toronto?

Nobody likes a leaky basement and we have the perfect solution for that. Having over 48 years of experience in the basement waterproofing industry, we are the ideal team for your house’s interior basement waterproofing in Toronto. If you are someone who is suffering from a leaky basement and cant stand that musty smell from your basement, give us a call right away. 

We provide basement waterproofing services in Toronto and other surrounding areas like Oakville, Mississauga, Burlington, Hamilton, Milton, and Georgetown. We provide services all year round. For more information, give us a call at (905) 824-2557. Or, you Fill out the form below and we will respond to your inquiries at the earliest.


Frequently Asked Questions:

Waterproofing the basement from the inside ensures that your basement remains dry for half the cost of an exterior waterproofing repair method. Any excess water that enters in the basements is redirected away from the walls using weeping tile and sump pumps. 

The basement’s size, condition, and waterproofing technique can all affect how long and how much it will cost to waterproof a basement. If you want a more precise estimate, it is advisable to contact with a specialist.

Depending on the contractor, different waterproofing services may come with a warranty or guarantee. When choosing a contractor, it’s crucial to inquire about warranties or guarantees and to check the fine print before signing any contracts.

It’s difficult to give an exact time frame because the duration of the project depends upon various factors and might take anywhere from a few days to a few weeks. Only upon a proper inspection, we can provide you with a rough estimate of the time duration.

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After you fill out the form below, we will contact you as soon as possible for A FREE ESTIMATE. If you still have any questions, feel free to contact us anytime.