Water in Your Basement? We’ll Stop It — Fast.

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Professional, Long-Term Waterproofing Backed by Real Experience

Water in your basement? We’ll stop it—efficiently, cleanly, and with lasting results.

For over 20 years, MT Drains & Plumbing has delivered dependable basement waterproofing Toronto homeowners trust. Whether you’re battling a persistent wet basement or simply want peace of mind, our licensed technicians assess the issue, explain your options, and install systems built to last.

Call (647) 370-5325 or request a free local quote that homeowners trust.

Why Waterproofing Matters in Toronto

Most Toronto basements were built long before today’s waterproofing codes. Clay-rich soils, freeze–thaw cycles, and heavier downpours now drive moisture straight through aging foundations. The Canada Mortgage and Housing Corporation’s CMHC guide to fixing a damp basement confirms that once water finds a path, repair costs climb quickly—especially in neighbourhoods like East York, the Junction, and North Toronto, where a single storm can leave floors soaked.

Common entry points include:

Cracks along basement walls

Poor grading

Outdated weeping tile systems

Leaking basement windows or window wells

We identify the cause—not just the symptom—and recommend tailored solutions based on your property layout, foundation type, and budget that keeps your basement dry even during spring thaws.

Signs You Might Need Waterproofing

Many issues start small and go unnoticed. If any of the indicators below look familiar, schedule an inspection:

Damp or musty 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

Spotted one or more of these? A professional inspection can determine whether waterproofing is needed—and which method is right for you.

Basement Waterproofing Services in Toronto

We offer both interior and exterior solutions, along with specific services like crack repair and sump pump installations.

Sump pump installation or upgrades

Approx. Cost: $2,100–$2,700

A dependable sump pump is the heart of any effective waterproofing system, keeping the lower level of your home dry during heavy rain.

Basement Underpinning

Strengthen and deepen your home’s foundation to add space and improve structural support.

Weeping tile or French drain installation

Approx. Cost: Included in exterior waterproofing / varies

Install perimeter drainage systems that redirect groundwater away from your foundation walls.

Foundation Crack Repair & Injection

Approx. Cost: $1,600–$3,200 per crack

Even a hairline crack can turn into a wet basement problem—our team seals foundation cracks as part of complete basement waterproofing Toronto solutions.

Window Well Drains & Covers

Approx. Cost: Included in exterior waterproofing / varies

Without proper drainage, window wells funnel water straight into a wet basement; our Toronto crew installs code-compliant drains and covers.

Leaky Basement Repair

We trace every leak to its source, eliminate the pathway, and leave you with no more wet basement stress.

Our 6-Step Wet Basement Waterproofing Process

Preventing water is the core objective of our entire process—every product we choose and every step we take is designed to stop moisture before it ever reaches your foundation.

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

Free Onsite Inspection
We assess signs of moisture and diagnose all signs of water intrusion.
Detailed Quote
Clear pricing, scope of work, and timelines—no surprises.
Permits & Rebates (If Required)
We manage the paperwork, including eligibility for city subsidies.
Site Preparation
Our team protects your home, sets up clean access, and preps the work zone.
Waterproofing Installation
All materials installed to code by our in-house crew —no subcontractors.
Final Walkthrough & Warranty
We explain what was done, test the system, clean up, and issue a warranty.

Toronto’s Clay Soil & High Water Table: Why Leaks Happen Here

Toronto homes sit on dense glacial clay that absorbs water but releases it slowly. After heavy rain or spring thaws, groundwater can rise more than a metre, building hydrostatic pressure against foundation walls. Clay doesn’t drain like sand, so moisture has only one escape route—through cracks, tie-rods, and the floor-wall joint. Add frequent freeze–thaw cycles and you have the perfect recipe for seepage, efflorescence, and bowing walls.

Our exterior membranes, dimple boards, and French-drain systems are engineered specifically for clay soils and fluctuating water tables. By relieving pressure and channelling water away, they keep your lower level permanently dry.

Concerned about soil pressure around your foundation? Book a no-obligation inspection, and our waterproofing specialists will recommend the right solution for your property.

Get Help From Our Licenced & Insured Waterproofers

Speak with our waterproofing specialists and get clear, upfront pricing today.

Toronto Basement Waterproofing Pricing

We price every basement waterproofing Toronto project based on scope, site access, and method—not on guesswork. Here’s what most homeowners can expect:

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 Installation	$2,000 – $3,200

All pricing includes materials, labour, cleanup, and warranty.

Interior vs. Exterior Waterproofing: A Quick Guide

Both options stop water intrusion, but the right choice depends on leak severity and access.

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, reliable products from trusted brands:

DELTA®-MS Membrane – Creates an air gap between soil and wall
Aqua Bloc 770-06 – Seamless, flexible waterproof coating
DMX Drain Board – Boosts exterior drainage performance
Corrugated Pipe with Filter Sock – Prevents clogging
Bakor Yellow Jacket Mesh – Reinforces waterproof membranes
Limestone Gravel – Improves subsurface drainage
Parging Mix – Adds a protective finish over foundation walls

Toronto Waterproofing Rebates: What You Need to Know

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

A homeowner in Midtown was dealing with recurring leaks and humidity. Our inspection showed hydrostatic pressure causing seepage at the floor-wall joint. We installed interior drain channels, a dimpled membrane, and a sump pump with backup. The system has performed flawlessly since—even during record rainfall.

Main Water Line Replacement With Trenchless Technology in Toronto

The new house was built but the lead main water supply from outside ( property

Trench Drain Installation at a Gas Station in Barrie

When people fill their cars with gas, the last thing they want to do is

Garage Trench Drain Installation in Toronto

Trench drain installed at the edge of the garage to move water away from the

Main Water Line Replacement With Trenchless Technology in Toronto

The new house was built but the lead main water supply from outside ( property

Trench Drain Installation at a Gas Station in Barrie

When people fill their cars with gas, the last thing they want to do is

Garage Trench Drain Installation in Toronto

Trench drain installed at the edge of the garage to move water away from the

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 who no longer worry about a wet basement.

“We’re here to solve the issue, not just patch it. Every system we install is meant to last—and we stand behind it.”

Request a Free Basement Waterproofing Quote in Toronto

If you’ve noticed moisture or other water problems in your basement—or simply want to prevent them—book a no-pressure inspection today. We’ll provide clear options, honest pricing, and responsive service.

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—classic wet basement signs—book a basement waterproofing Toronto inspection.

Is interior waterproofing enough for my home?

For many wet basement issues, an interior system is sufficient, 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—backwater valve installations and other repair services—require permits. We handle every application and inspection on your behalf.

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 your property through cracks in the foundation or through window wells.
High humidity: High humidity levels 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 your home, 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.