Basement Crack Repair Toronto & GTA
Are basement cracks causing you concern? Not to worry; GJ MacRae is here to assist you with top-tier basement crack repair services that will permanently address your concerns.
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Reliable Basement Wall Crack Repair Experts in Toronto
Do you have a cracked foundation wall problem but don’t know where to turn? That’s where GJ MacRae Foundation Repair comes in. We are a renowned basement waterproofing and foundation repair company in Toronto and have been serving the GTA for almost five decades. We have over 10,000+ satisfied customers; we take pride in our work and guarantee quality workmanship and customer satisfaction.
We are a second generation family-owned business with almost five decades of experience, and we have perfected the art of basement foundation crack repair and basement waterproofing. Our highly skilled staff, along with the latest methods, team up to create the perfect solution for your basement wall & foundation crack repair. GJ MacRae Foundation Repair has served the GTA, Hamilton, Etobicoke, Mississauga, Toronto, Oakville, Burlington, Milton, Georgetown, and surrounding areas since 1975. Call us today for a free foundation crack repair estimate.

The Problem with Cracked Foundations
Our Basement Crack Repair Waterproofing Process
01
First, we begin with hand excavation to locate the below-grade utilities like gas lines, water pipes, and telephone lines. Then, we remove obstacles like AC units, interlocking stones, or concrete walkways to access the repair area.
02
We thoroughly examine the existing weeping tile system and replace it if any damage is found. The exposed foundation walls are cleaned with a wire brush, and all the cracks, voids, and tie-rod holes are ground out and repaired with hydraulic cement.
03
Once the hydraulic cement is cured, we apply a layer of primer from the footing to the top of the foundation walls. This later allows the rubberized membrane enough adhesion to set appropriately with the foundation walls.
04
After the primer is dry, we apply the first layer of the rubberized membrane, followed by a fiberglass mesh layer. The fiberglass mesh provides flexibility and movement to the rubberized membrane, allowing it to move along with the structure instead of against it.
05
After it is all set, we apply another layer of rubberized membrane on top of the fiberglass mesh. We then install a final layer of plastic. Lastly, we installed a layer of drainage board. This helps to reduce the hydrostatic pressure and diverts large volumes of water directly vertically down to the weeping tile system.
06
We now proceed to the backfill process. We power-tamp the native soil every 6 “-12” inches to ensure that the drainage is consistent, all the layers of the rubberized membrane are locked in place, and the original grade can be restored after the repairs.
07
We attach a termination strip at the top of the drainage board to ensure it is not separated. Separating can cause trouble and potentially let rainwater get behind the patch, leading to a very unpleasant sight in the above-grade areas.
08
After the repairs are backfilled, we complete the process by adequately sweeping the repair area. The rolled tarps are reused to restore the original look of the repaired area.
Signs That You Need Basement Foundation Crack Repair
A solid foundation is the backbone of any structure. It provides stability and support to the structure. So, even minor cracks can be a cause for your concern. Here are some key signs that indicate you need basement foundation crack repair:
- Visible Cracks
The most obvious sign is the presence of visible foun cracks in your basement walls or floors. These cracks start small but get widen over time.
- Leaking Water
Water seeping through cracks in your basement walls or floors is a clear indication of a problem with your foundation.
- Uneven Floors
Noticing sloping or dipping floors, could be a sign of underlying foundation issues that require professional attention.
- Doors and Windows Misaligned
You may notice that doors and windows in your home no longer close properly. It can be due to changes in the structure caused by foundation movement.
- Cracks in the Exterior Walls
Foundation settlement or soil movement around the perimeter of your house is another sign that you need professional basement foundation repair
- Gaps Between Walls and Ceiling
It is a clear sign of foundation movement if you observe gaps forming between your basement and foundation walls and the ceiling. These gaps may appear suddenly or gradually over time.
- Bowing or Buckling Walls
Foundation problems can cause basement walls to bow inward or outward. If you notice any signs of bowing or buckling, it’s a sign to fix the foundation basement issue promptly.
- Cracks in Exterior Concrete
Cracks in exterior concrete indicate soil movement or drainage issues that also affect your basement foundation. So, inspect the exterior concrete around your home. Also, include sidewalks, driveways, and patios for signs of cracking.
What Could Go Wrong If You Ignore A Crack In Your Basement Wall?
Ignoring a basement foundation crack repair? It seems like a minor issue but can lead to substantial problems. Here’s what could go wrong if you neglect a foundation or basement wall cracks:
- Water Damage
Even a small crack can let water into your basement. This leads to dampness and mould growth inside the foundation and basement floors. Moreover, it can damage your items stored in the basement.
- Structural Damage
Over time, basement or foundation wall cracks can widen. It compromises the structural integrity of your home. If left as it is, it can weaken the foundation and basement. Moreover, it can lead to sagging floors, tilting walls, and even the collapse of parts of your house.
- Pest Infestation
Gaps and cracks in your basement wall create entry points for pests. Rodents, insects, and termites can enter your home from the cracked walls. Once they are inside, these pests can cause further damage to your home. It also can pose health risks to you and your family.
- Decreased Property Value
A damaged basement can significantly lower the resale value of your home. Potential buyers will be discouraged by the possibility of having to deal with structural repairs and water damage. This can lower the offers and make it difficult to sell your property.
- Health Risks
Damp basements resulting from water seepage through cracks can create a breeding ground for mould and mildew. Exposure to mould spores can exacerbate respiratory problems and allergies.
- Increased Energy Bills
Water infiltration through basement cracks can lead to increased humidity levels in your home. It makes it harder for your HVAC system to regulate temperature efficiently. This can result in higher energy bills as your heating and cooling systems will be used more to maintain comfortable indoor conditions.
- Legal Issues
In some cases, ignoring a crack in your basement wall can lead to legal issues. Suppose the damage affects neighbouring properties or violates building codes, you can be in legal trouble. You will be liable for damages or fines if the problem is not addressed promptly.
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 basement foundation crack repair solution to your home.
- 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 foundation and basement wall crack repair 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 foundation crack repair 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 basement foundation crack repair 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, basement crack repair expert 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
Check Out Our Latest Basement Crack Repair Projects Completed in Toronto, Ontario
Some Kind Words 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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Strong Foundation for a Strong Home
Your basement has so much potential. Don’t let it go to waste because of leaks, cracks, or dampness. Transform your wet and musty basement into a dry, cozy space you can love. Whether you fancy a game room, a gym, or a hangout spot, you can transform your leaking basement into your dream space!
Call GJ MacRae Foundation Repair today; you’re only one call away from a dry basement! We’ll check out your basement situation and give you the ideal waterproofing solution. Get the best basement crack repair service from the most experienced team in the GTA today; call us at (905) 824-2557

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.
Schedule a Free Consultation Today
Fill out our request form and we will contact you as soon as possible for a free foundation repair consultation!
Frequently Asked Questions
Basement foundation wall cracks can be caused by various factors such as foundation settling, concrete shrinkage, saturated soil, negative grade, damaged eavestrough systems, soil expansion or contraction, and hydrostatic pressure.
Repairing basement wall cracks yourself is not recommended, as it requires specialized equipment and expertise. Hiring a professional to diagnose and repair the issue properly is best.
The cost of foundation wall crack repair can vary depending on the extent of the damage and the method used for repair. Please get in touch with us directly for a free quote today.
The best method for repairing basement wall cracks depends on the cause and severity of the foundation crack. Some standard techniques include rubberized membranes, structural underpinning installations, and carbon fiber reinforcement. As an experienced foundation repair company, we know how to handle cracked foundation walls.
The time it takes to repair a basement wall crack depends on the extent of the damage and the method used for repair. Simple repairs can take a few hours, while more complex repairs may take several days. Only after a proper examination will we be able to tell you a timeframe.
Preventative measures to prevent basement wall cracks include proper grade and drainage, maintaining a consistent moisture level, and addressing foundation settling, which can help prevent basement wall cracks from occurring in the future.
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 requires minimal 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.
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.