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Wet Leaky Basement Repair & Foundation Crack Repair in Toronto.

Water damage in your basement doesn’t just threaten your property—it impacts your health, safety, and home value. MT Drains & Plumbing provides professional basement waterproofing services in Toronto backed by 20+ years of experience and real, proven results.

Whether you’re seeing water stains, smelling must, or spotting hairline cracks in your foundation—we’ll inspect your basement, diagnose the issue, and install a solution that lasts.

Call (647) 370-5325 or Request a Free Quote for your no-obligation inspection.

Why Waterproofing Matters in Toronto

Toronto’s mix of older housing stock, clay soil, and erratic weather makes basement leaks incredibly common. Spring thaws, heavy rainfalls, and rapid temperature swings all contribute to water entering your home through:

Foundation cracks

Poor grading

Outdated weeping tile systems

Leaking basement windows or window wells

Ignoring these issues often leads to

Mold growth

poor indoor air quality

Structural damage

shifting foundations

Higher repair costs

down the line

Decreased property value

during resale

Common Basement Waterproofing Problems We Solve

Damp or musty basement smell
Water pooling after rain
Foundation cracks or bowed walls
Leaking around basement windows
Peeling paint and white efflorescence
Water seeping where floor meets wall

If you’ve spotted any of these signs, don’t wait. Acting early can save you thousands in structural repairs and cleanup.

Basement Waterproofing Services in Toronto

No two basements are alike. That’s why we offer a wide range of waterproofing services—customized to your home, your soil conditions, and your goals.

Interior Waterproofing

Ideal for finished basements or when exterior excavation isn’t possible
We install drainage channels along the perimeter, vapor barriers on walls, and sump pumps to direct water out of the home
Minimal disruption, fast turnaround

Exterior Waterproofing

Involves excavation around the foundation
We apply a waterproof membrane, drainage board (e.g., DELTA-MS), and replace old weeping tile
Best for long-term protection and resale value

Sump Pump Installation

Removes collected water through an automatic pump system
We install both primary and battery backup systems to ensure 24/7 protection—even during power outages

Foundation Crack Repair

Seals cracks using high-pressure polyurethane or epoxy injection
Stops existing leaks and prevents future spreading

Weeping Tile Replacement & French Drains

Directs groundwater away from your foundation
Weeping tiles are buried perforated pipes surrounded by gravel that relieve hydrostatic pressure before it causes leaks

Window Well Installation

Protects basement windows by diverting water with drainage and gravel
Prevents leaks and meets Ontario Building Code for egress windows

Our 6-Step Basement Waterproofing Process

Knowing what to expect puts homeowners at ease. Here’s how we work:

Free Inspection
We visit your property, assess all signs of water intrusion, and identify the root cause.
Custom Quote
You’ll receive a detailed scope of work, price breakdown, and timelines.
Permits & Rebates (If Required)
We handle all necessary permits and help with any rebate applications.
Preparation & Setup
Our crew protects your property, sets up safety barriers, and begins excavation or interior setup.
Waterproofing Work
We install membranes, sump pumps, drains, and sealants—whatever your job needs, done to code.
Final Walkthrough & Warranty
We review the work, test the system, clean the site, and issue a written warranty.

Get Help From Our Licenced & Insured Waterproofers

Toronto Basement Waterproofing Pricing

Every project is different, but here’s a realistic pricing range for homeowners planning a waterproofing project in the city:

Service	Typical Cost Range
Interior Waterproofing	$80 – $240/linear foot
Exterior Waterproofing	$150 – $350/linear foot
Crack Repair	$1,600 – $3,200 per crack
Sump Pump Installation	$2,100 – $2,700
Window Well Installation	$1,800 – $3,200
Backwater Valve (Interior/Exterior)	$2,000 – $3,200

All quotes include material, labour, cleanup, and a written warranty. No hidden charges or surprise fees.

Compare: Interior vs Exterior Waterproofing

Feature	Interior Waterproofing	Exterior Waterproofing
Disruption	Minimal (inside work only)	Moderate (requires excavation)
Effectiveness	Excellent for mild–moderate leaks	Best for severe, long-term leaks
Timeline	1–2 days	3–7 days
Cost	Lower upfront cost	Higher upfront, better ROI
Use Case	Finished basements, condos	Homes with frequent flooding

Materials We Trust and Use

We use only proven, industry-standard materials to ensure your waterproofing system performs for the long haul.

DELTA®-MS Dimpled Membrane – Creates an air gap between soil and foundation
Aqua Bloc 770-06 – Seamless liquid membrane for tough-to-seal areas
DMX Drain Board – Enhances drainage on exterior walls
Corrugated Drain Pipe with Filter – Helps channel water efficiently
Bakor 990-06 Yellow Jacket Fibre Mesh – Reinforces liquid membranes
3/4” Limestone Gravel – Promotes drainage and relieves pressure
Parging Mix – Protects foundation exterior coatings

City of Toronto Waterproofing Rebates: Basement Flooding Protection Subsidy

Toronto homeowners may qualify for partial reimbursement when installing eligible flood prevention systems under the Basement Flooding Protection Subsidy Program. The City offers rebates for the following services:

Backwater Valve Installation: Up to $1,250
Sump Pump Installation (with backup): Up to $1,750
Foundation Drain (Weeping Tile) Disconnection: Up to $400

Important: Each item has different rebate caps, and reimbursement applies to eligible costs only.

Basic Eligibility Requirements

Your home must be located in Toronto and be an existing, single-family residential home.
The work must be completed by a City-licensed contractor (like MT Drains & Plumbing).
Downspouts must be disconnected from the sewer system (if applicable).
You must submit your application within 12 months of the installation.

We handle qualifying work and can walk you through the paperwork to help you apply. Ask us about rebates during your inspection.

Case Study: Interior Waterproofing in Midtown

We recently completed an interior waterproofing project in Midtown Toronto for a homeowner dealing with recurring basement leaks and musty odours. After identifying hydrostatic pressure as the root cause, our team installed a full perimeter drainage system, a dimpled membrane, and a sump pump with backup. The basement has remained completely dry since, even during heavy rainfall.

External Basement Waterproofing and Foundation Repair in Toronto

Sometimes homeowners might experience water in the basement due to water-heavy rain. The best solution

Exterior Waterproofing Done Underneath Side Door in Mississauga

Exterior waterproofing is a crucial leak preventative measure. Unlike interior projects that address water that’s

exterior basement waterproofing project in Etobicoke

Exterior Waterproofing Etobicoke

MT Drains recently performed an exterior waterproofing job in Etobicoke. The property had a significant

Why Toronto Homeowners Trust MT Drains & Plumbing

Over 20 years in waterproofing and plumbing across the GTA
5,000+ jobs completed with long-term results
Fully licensed, insured, and WSIB-compliant
BBB Accredited, HomeStars Verified, and TrustedPros Recommended
All work covered by written warranties
No subcontractors — every technician is part of our in-house team
Dozens of verified 5-star reviews from Toronto clients

“We’re not here to give you a band-aid fix. We install systems that protect your home for the long haul—and we back that with real warranties.”

Request a Free Basement Waterproofing Quote in Toronto

A dry basement isn’t just a convenience—it’s a safeguard for your entire home. Whether you’re dealing with a minor leak or recurring flooding, our licensed Toronto team will inspect, quote, and waterproof with care.

Response within 1 business day. No obligation. No pressure.

FAQ

How can I tell if my basement needs waterproofing?

If you notice moisture, musty odours, cracked walls, or standing water—those are all warning signs. An inspection can determine the exact cause and solution.

Is interior waterproofing enough for my home?

For many homes, yes—especially if the leaks are minor or your basement is finished. However, exterior waterproofing is often the better choice for long-term protection.

Can I waterproof during winter?

Yes. Interior waterproofing can be done year-round. Exterior work depends on weather and soil conditions, but we work well into the cold season.

Do you need permits for waterproofing in Toronto?

Some projects, like backwater valve installations, require permits. We handle all applications and inspections.

Do you handle mold removal too?

We don’t offer mold remediation, but we can refer you to trusted partners. Waterproofing will prevent future growth by eliminating moisture.

Will my homeowners insurance cover waterproofing?

Usually not—but it’s worth checking. Insurance often covers water damage, not prevention.

What Can Cause a Wet Carpet in the Basement?

There are several potential causes of a wet carpet in a basement in Toronto. Some of the most common include:

Leaky pipes: A leak in the plumbing system can cause water to seep into the basement and cause a wet carpet.
Flooding: Heavy rain or snowfall can cause water to seep into the basement through cracks in the foundation or through window wells.
High humidity: High humidity levels in the basement can lead to condensation on surfaces, which can cause a wet carpet.
Clogged or malfunctioning sump pump: A sump pump is used to remove water that has accumulated in the basement. If it is clogged or not working properly, it can cause water to buildup and create a wet carpet.
Improperly installed or maintained drainage: Improperly installed or maintained drainage systems can cause water to collect around the foundation and seep into the basement, creating a wet carpet.
Improperly installed or maintained window wells.

It is important to identify the cause of the wet carpet and take appropriate action to fix the problem. It's better to seek professional help in order to find out the source and prevent any further damage.

Basement Waterproofing in Toronto