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Basement Waterproofing Company in Thornton

If water is showing up in your basement, it’s not something to ignore. Leaks rarely fix themselves—and they often return worse if the source isn’t addressed properly.MT Drains & Plumbing provides basement waterproofing in Thornton focused on one thing: finding where the water is coming from and fixing it the right way.No generic systems. No unnecessary work. Just clear answers and long-term solutions.

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Common Basement Water Issues We See in Thornton

Homeowners usually contact us after noticing:

  • Water pooling along the basement floor

  • Damp or stained foundation walls

  • Leaks that appear after heavy rain or snowmelt

  • Moisture around window wells or foundation cracks

  • Musty odours that don’t go away

If water has found a path once, it will usually find it again. The key is stopping it at the source.
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Offering Waterproofing Services Since 1991

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How We Approach Basement Waterproofing

Every job starts with diagnosis, not assumptions.
During your inspection, we determine:

  • Where water is actually entering the foundation

  • Whether the issue is isolated or part of a larger drainage problem

  • If an interior solution makes sense—or if exterior waterproofing is required

  • Whether cracks are structural or surface-level

This approach prevents overbuilding and ensures the repair matches the problem.
waterproof membrane installed in Etobicoke basement

We Can Handle All Your Waterproofing Needs

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Interior vs. Exterior Waterproofing — What You Need to Know

There’s no one-size-fits-all solution.

Interior Waterproofing

Often recommended when:

  • Water enters at the wall-to-floor joint

  • Exterior excavation isn’t practical

  • Groundwater needs to be managed, not blocked

Interior systems collect and redirect water safely but don’t stop exterior moisture from reaching the foundation.

Exterior Waterproofing

Recommended when:

  • Water is penetrating through foundation walls

  • Exterior cracks are present

  • Long-term protection is the priority

Exterior waterproofing stops water before it enters the home, making it the most permanent option in many cases.
We explain why a solution is recommended—so you can make an informed decision.

Basement Crack Repair in Thornton

Foundation cracks are common in both older homes and newer builds. Even small cracks can become repeat leak points.
We repair basement cracks using proven methods such as:

  • High-pressure epoxy or urethane injection

  • Exterior membrane repairs

  • Full-length crack sealing when required

All repairs are performed by licensed technicians and backed by warranty.

Why Homeowners Choose MT Drains & Plumbing

  • Licensed and insured waterproofing specialists

  • Serving the GTA since 1991

  • Thousands of completed waterproofing and drainage projects

  • In-house crews — no subcontractors

  • Clear inspections and transparent pricing

  • Solutions designed to last, not just dry things temporarily

We focus on fixing the issue—not selling the biggest system.

Book a Basement Waterproofing Inspection in Thornton

If your basement is showing signs of water intrusion, the next step is understanding why it’s happening.
We provide honest assessments, practical solutions, and professional workmanship—without pressure.
Call Us Now At (905) 761-5551
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FAQ

Do I need interior or exterior waterproofing?
That depends on where the water is entering. An inspection is the only way to know.
Yes. We take steps to protect finished areas whenever possible.
When the source is addressed correctly, waterproofing is a long-term solution.
Only if groundwater management is part of the issue. We’ll explain when it’s necessary.
Coverage varies. We can help explain what’s typically covered and what isn’t.
Have more questions? See our full Basement Waterproofing FAQ page for detailed answers.
Leaky basement being waterproofed in Toronto

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Why Does My Basement Sump Pump Smell Bad?

A foul smell coming from your sump pump isn’t just unpleasant—it can point to a maintenance issue, a drainage problem, or even potential health risks. Here’s what causes that smell and what steps you should take to eliminate it.

Efflorescence Streaks on Basement Walls: Cosmetic Issue or Water Intrusion?

Efflorescence is a common issue in concrete and masonry basements. It shows up as white, powdery streaks or flakes on the wall surface. In many cases, it’s just a cosmetic concern—but it can also indicate ongoing moisture problems.

Here’s how to assess what you’re dealing with and when it’s time to act.

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

MT Drains & Plumbing Reviews

Excellent
MT Drains & Plumbing4.8
Based on 183 reviews
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Quoc Hoan L.
These guys work wonders. They came on the day of and dealt with the problems at our premise within a couple of hours
David L.
Work done promptly.
Simmar N.
Excellent service
Stuart C.
We were having trouble finding a replacement drain cover for our driveway drain. MT Drains and Plumbing handled the job very well getting a new one cut and installed. When I raised a concern Pavel addressed it quickly and effectively. Communication with the customer was always very good. I would use this company again.
Bella B.
nice staff and efficiency! will continue using them next year.
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.
Mykola I.
As a General Contractor, I highly recommend MT Drains & Plumbing. I was dealing with a complex sewer line issue for a project in Richmond Hill. Slava was fantastic—he arrived on time and performed a very thorough inspection.

​He is a true professional who knows his trade inside out. He offered a smart, practical solution to the problem without any hassle. It’s hard to find such reliable and skilled tradespeople these days. Highly recommend Slava for any plumbing or drain needs!"
ilaw Z.
Sid an excellent job and was very quick
Darren A.
Pavel was great to deal with. Very professional, knowledgeable and helpful.
B A.
Timely and professional service, very happy with the results.
Vaidyanathan P.
Eddie and team did an excellent job from start to finish. Their attention to detail, professionalism, and commitment to quality workmanship were impressive. The project was completed on time, and they ensured the area was kept clean throughout. I’m very satisfied with the outcome and would highly recommend them for any bathroom renovation work.
Brandon G.
Nisan B.
Sheryl Y.
Edi and Denys were phenomenal. Work was done quickly, efficiently and cleanly. Things were explained clearly and questions satisfactorily answered. Very happy with the work done. Tub-to-shower conversion.
Photo from customer review
Usor W.
Amazing job

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