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Basement Crack Repair in Toronto

Basement cracks can allow water intrusion, weaken foundation walls, and lead to ongoing moisture issues if left unaddressed. Our basement crack repair services in Toronto focus on identifying the cause of the crack and applying the correct repair method to restore structural integrity and prevent future leaks.

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Stop Water, Mold & Structural Damage at the Source

Cracks in your basement walls or floors aren’t just cosmetic—they’re often early signs of water intrusion, foundation shifts, or hydrostatic pressure. At MT Drains & Plumbing, we provide professional basement crack repair services in Toronto, backed by decades of hands-on experience and long-term warranties.
Free onsite inspections. Fast response. Trusted since 1991.
Our Waterproofing Services
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Water in Your Basement? We’ll Stop It — Fast.

Call (647) 370-5325

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Do You Need Foundation Crack Repair?

You might if you’ve noticed:

  • Water leaking through the wall or floor

  • Thin vertical or horizontal cracks getting wider

  • Musty basement smell or visible mold

  • Floor lifting or wall bowing

  • Cracks near windows or door frames

  • A damp or humid basement despite running a dehumidifier

We’ll identify the type of crack, find the root cause, and fix it properly.

What Causes Basement Cracks in Toronto?

Whatever the cause, we’ve repaired it before—and we’ll get yours fixed right the first time.

Hydrostatic Pressure

When groundwater pushes against your foundation

Soil Shifting & Settlement

Common in older homes and clay-rich areas

Poor Drainage or Grading

Directs water toward the home instead of away

Shrinkage or Thermal Stress

Concrete expands and contracts over time

Construction Defects

Thin walls, poor rebar placement, or missed expansion joints

Our Basement & Foundation Crack Repair Services

Epoxy & Polyurethane Injection

Best for vertical or diagonal cracks under 5 feet. We seal from the inside using high-pressure injection that prevents further water intrusion.

Exterior Crack Repair

For larger cracks or exterior breaches, we excavate to the foundation, seal the crack from the outside, and apply a waterproof membrane.

Structural Reinforcement

For horizontal or step cracks (often structural), we may install carbon fiber strips or recommend underpinning if movement is detected.

Drainage Solutions

If water pressure is the root cause, we’ll install a French drain, interior perimeter drain, or weeping tile system to divert moisture away.

Waterproofing Add-Ons

We offer sump pump installation, backup systems, window well drainage, and other waterproofing upgrades if needed during repair.

Interior vs. Exterior Crack Repair: What’s the Difference?

TypeInterior RepairExterior Repair
Best ForActive leaks, vertical cracksLarger or recurring leaks, exterior stress
Access NeededBasement interior onlyRequires excavation
DisruptionMinimalModerate (landscaping impact)
WaterproofingPolyurethane/epoxy injectionMembrane + sealant
Cost Range$400–$1,200$1,200–$3,500+

What to Expect From Our Process

We’re a licensed, insured contractor with over 30 years of crack repair experience in the GTA.

1. Free Inspection

We assess the type, size, and cause of the crack.

2. Clear Estimate

No guesswork or sales games. You get transparent pricing.

3. Fast, Clean Repair

We schedule work quickly and respect your space.

4. Warranty Issued

Every repair is backed by our written guarantee.

Book Your Crack Repair Estimate

Don’t wait for minor cracks to turn into major damage. Let our team inspect your basement and recommend the right solution—no pressure, just facts.
(905) 761-5551

Real Results, Real Customers

“We had a crack in the basement corner leaking after storms. Pavel found the source, gave us a quote on the spot, and had the crew fix it the next day. Clean, efficient, and totally dry ever since. Highly recommended.”

O.S, Toronto
basement waterproofing project in Toronto

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Have a question about your situation? Our team will review the details and explain the right next step.
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Call (647) 370-5325

MT Drains & Plumbing Reviews

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MT Drains & Plumbers LTD4.8
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Valeria S.
Great experience with MT Drains & Plumbing in Barrie for our basement waterproofing project. Pavel was knowledgeable, straightforward, and easy to deal with, and the office team was responsive and organized throughout the process. Fair pricing, quality workmanship, and the job was completed professionally. Would definitely recommend MT Drains & Plumbing for basement waterproofing and drainage work.
VIACHESLAV O.
I would like to sincerely thank MT Drain Plumbing for the excellent work they did. The entire team was professional, punctual, courteous, and very respectful throughout the process. Everything was well organized and completed on time. I especially appreciated how carefully they protected the surrounding areas and contained everything to prevent dirt, debris, or other materials from getting where they shouldn’t. The work was completed quickly, efficiently, and to a very high standard. I was also pleasantly surprised by the price — it was significantly lower than the quotes I received from other companies, which made the experience even better. I would also like to mention that the team members who came out to assess and discuss the work with me were extremely polite, professional, and punctual. I highly recommend MT Drain Plumbing to anyone dealing with waterproofing issues, drainage problems, or water management around their home. If you’re looking for a company that provides quality work, fair pricing, and excellent customer service, I definitely recommend giving these guys a call. Thank you again to the entire MT Drain Plumbing team for a job very well done!
Brandon C.
We have now used MT Drains for the second time as they delivered great work for us. Pavel and his team are very helpful and responsive. They are quick to reply and do a site visit to diagnose the issue. They always provide options and scenarios to help you understand the issue and the solution. I would definitely recommend them for your waterproofing needs. Thanks again to the team!!
Simon S.
Update on August 24 2026: We needed to replace a shower cartridge and it turned out that we also needed to replace our main house water supply shut off valve before the shower job could be done. Olga in the office was very helpful in scheduling the job as well as in dealing with our municipality who needed to be involved as well. When Denis the technician arrived to do the job - early, which I always appreciate! - he assessed the job & dealt with the municipality further to expedite the job. It also turned out that the shower cartridge was badly corroded & required Denis' expert work & his experience to remove it without damaging the fixture. (This is a job the internet says you can do yourself, but when the cartridge is very old & corroded as this was, a professional is required!) He then easily installed the new cartridge. As usual, I was impressed by the professionalism and pleasantness of MT Drains' staff, both in the office & in the field. Update on Dec 17 2024: A toilet in our house came away from the floor in a way that broke the flange it was bolted to. I called MT Drains because they had done a fine repair job in our kitchen a few months earlier (see below). Viktoriya in the office was very friendly & helpful in getting us a cost estimate in a timely fashion and setting up an appointment to fix the problem that fit our schedules. We received email confirmation and reminder of the appointment, and a text confirmation on the morning of the appointment itself. The technician, Amir, arrived a few minutes before the start of the window for the appointment, which I always appreciate a lot! He was friendly, polite and professional. He assessed the repair requirements, confirmed the estimate, and completed the job in a timely manner. Amir also cleaned up everything and even took the garbage away with him. Viktoriya followed up shortly thereafter by phone to check that we were pleased with the job, and then sent the invoice to me for the agreed amount. She also confirmed that they received our payment right away. I’ve used MT Drains’ services for plumbing issues before and will happily use them again! The drain from our kitchen sink was leaking near the place where it attached to the sink itself. The reason turned out to be corrosion that was rotting away the place where the drain pipes attach to the sink. Pavel from MT Drains responded to my Trusted Pros posting within minutes, and was able to have a plumber come that very day. Dima arrived within the agreed time frame. He was polite, friendly, efficient and very skilled at diagnosing the problem and making the repair by replacing the corroded parts. He also cleaned up after his work. Viktoriya in the office was also very helpful and professional - the entire operation was fast, efficient, effective, friendly and professional. I will definitely call on MT Drains for any future plumbing needs.
Joel M.
I experienced a sudden pipe leak and needed help fast, so I contacted Plumber Rapid Rescue Markham. They were quick to respond and scheduled me the same day, which was a huge relief. The plumber showed up on time, explained what caused the issue, and fixed it efficiently without any pressure or upselling. If you’re looking for a dependable plumbing company in Markham, I’d definitely recommend giving them a call.
Connie J.
I had a leak in my bathroom that involved replacing old pipes and taps. I am very pleased with the timely and professional service.
Nolan A.
After noticing water coming through a wall during heavy rain, we contacted MT Drains for waterproofing. Pavel came by for the estimate and thoroughly explained our options. His crew was fantastic—respectful of our property and hardworking. They waterproofed the entire affected wall from the outside, and we've had zero issues since. We’re very impressed and grateful!
Paul A.
We are repeat customers of MT Drain Richmond Hill and could not be happier with their services. Our first experience with them involved basement waterproofing, and we have had no issues with it for the past six years, even during periods of heavy rainfall. In addition, they provided us with gorgeous window-well covers that have attracted inquiries from friends and neighbors. Beyond their excellent work, the team is punctual, budget-friendly, and extremely courteous. They also prioritize property protection and ensure that no damage is incurred. Communication is excellent, and they follow up promptly, demonstrating their professionalism.
Paul A.
For some time, our basement had been experiencing water leakage after rain showers. The issue persisted, and with every passing storm, the leaks became more severe, leaving me feeling anxious. After researching online for a reliable company, I discovered Mt Drains. I reached out to them and was pleasantly surprised by how promptly they responded and came to assess the situation. The technician who attended to us was not only personable but also provided us with the best solution to our problem. The workers who carried out the job were equally professional and friendly, and upon completion, the area looked better than it did before. I am highly satisfied with their services and will undoubtedly recommend them to anyone in need.
Mihail M.
Guys did an amazing job , fixing leak in the basement . Very professional job . Thanks again
Valeria S.recommends
We called MT Drains & Pluming after a leak in the basement after heavy rain. The team was courteous and very professional. We ended up hiring Pavel for external basement waterproofing. The job was done on time and the price was reasonable.
Anton P.
Great company to deal with. Had leaking basement, called them and they came next day. Started working in 2 days and finished all in 3!weeks. Highly recommend.