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Products & Services

Mold Services
Dust Mites Control
Mold Spores
Mold Prevention
Dry Rot & Brown Rot

Basement Repair Services & Products
WaterGuard Interior System
DryTrak Drainage Channel
TrenchDrain Drain Grate
IceGuard Discharge Line
FlexiSpan Wall Crack Repair
Polyurethane Crack Sealing
WellDuct Window Drainage
BrightWall Waterproof Panels
ThermalDry Wall Barrier
Basement to Beautiful Pre-Finishing Wall Insulation Panels
Drain Tile Installation
SuperSump Pump System
TripleSafe Pumping System
UltraSump Battery Back Up
SaniDry Dehumidifier

Crawl Space Repair Services & Products
CleanSpace Encapsulation Vapour Barriers and Liners
Turtl Access Hatch
EverLast Crawl Space Doors
SaniDry CSB Dehumidifier
SmartDrain Water Drainage
SilverGlo Wall Insulation
TerraBlock Floor Insulation
SmartSump Sump Pump
WallCap Block Wall Sealer
SmartVent Flood Vents

Foundation Repair Services & Products
Push Pier Underpinning for Settlement, Foundation Leveling, Sinking Foundation Repair
Structural Repair
Geo-Lock Wall Anchors
Geo-Lock Helical Anchors
PowerBrace Bowed Wall Repair
CarbonArmor Fiber Wall Repair
SmartJack Crawl Space Support
Slab Pier Repair
PolyLevel Concrete Lifting & Leveling
ShotCrete Wall Restoration

Before and After Pictures from Toronto
CrawlSpace Encapsulation in Toronto, ON

CrawlSpace Encapsulation in Toronto, ON

Before After
CrawlSpace Encapsulation in Toronto, ON CrawlSpace Encapsulation in Toronto, ON

This crawlspace in Toronto was dirty, musty and unusable until Clarke Basement’s professional installation team transformed it into a clean and healthy space. 

Lifting a Pool Deck in Toronto

Lifting a Pool Deck in Toronto

Before After
Lifting a Pool Deck in Toronto Lifting a Pool Deck in Toronto

Lifting of an entire pool deck to improve slope, removed trip hazards and closed up gaps in the coping. The lift ranged from 1" to 3".

Lifted an Entire Backyard Patio in Toronto

Lifted an Entire Backyard Patio in Toronto

Before After
Lifted an Entire Backyard Patio in Toronto Lifted an Entire Backyard Patio in Toronto

This was a lift of an entire backyard concrete patio to achieve slope away from the home. 

Company Awards
Clarke Basement Systems has been awarded the HomeStars Best of 2016 award which we are very proud of.... [Read more]
The Community of Markham has chosen our business as the winner of the annual Markham Economist & Sun Reader’s Choice... [Read more]
Ratings are calculated based on consumer-review websites and blogs, social networks, business rating services and other award information to determine... [Read more]
More Awards

Your Trusted Toronto, ON Foundation Repair & Basement Waterproofing Contractor

We had a great experience with Clarke Basement Systems. They were extremely knowledgeable. They were really professional.  I loved their...
Happy Customers Surrounding Toronto, ON
Work Requests

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Reviews From Toronto
Testimonials From Toronto
Elizabeth from Toronto called on Clarke Basement Systems for help with her wet basement.
Testimonial by Elizabeth from Toronto, ON
We would like to let you know that your company present high standard of business practices. From receptionist to professional visiting (Ron Monk in our...
Testimonial by Theresa from Toronto , ON

Experienced basement waterproofing and foundation repair contractor serving Toronto, ON

Basement flooding is a major problem in Toronto, ON. Since the city’s sewer system isn’t designed to handle heavy rainfall over a short amount of time, surface flooding and basement flooding are all too common. In preparation for the area’s frequently severe weather, it’s important that Toronto homeowners take action to reduce the risk of basement flooding in their homes. If you have cracks in your foundation or basement walls, a faulty drainage system, or leaky basement windows, it’s likely that your basement will suffer from water damage.

That’s where we come in! Clarke Basement Systems is a locally owned and operated basement waterproofing company that has been serving the Toronto, ON area for over a decade with high-quality products and trusted service. We specialize in waterproofing basements and crawl spaces, repairing foundations, and lifting sinking concrete in Toronto, ON. Our warrantied solutions are proven to last for the long-term, and we have access to the best basement waterproofing and foundation repair products in the industry.

If you need basement waterproofing, crawl space encapsulation, foundation repair, or concrete leveling, contact us today to let our experts evaluate your home and provide a free estimate for the work you need! We proudly serve Toronto, ON, and areas nearby.

Basement waterproofing and crawl space encapsulation in Toronto

If you have water in your basement, you're probably wondering how it got there and what you can do to prevent future leaks before they happen. Basement flooding occurs most frequently when there is heavy rainfall or melting snow, but there are also many everyday reasons why your basement might flood. Some common causes of basement flooding include:

  • Crack or leak in your home's foundation or basement walls
  • Basement floor crack
  • Leaky basement windows or doors
  • Poor lot grading and/or drainage
  • Failure of foundation drains
  • Sump pump failure
  • Clogged eaves troughs or downspouts
  • Sewer backup

Whether your basement floods every time it rains or you have a small basement leak, a wet basement can mean expensive damage and mould problems. If you have a basement water problem, no matter how big or small, Clarke Basement Systems can prevent flooding and leaks with our proven basement waterproofing system. From our patented WaterGuard drainage system and powerful sump pumps to our energy-efficient dehumidifiers, we offer the high-quality products and professional installation you need to keep your basement dry all the time!

Crawl space encapsulation job in Toronto

A crawl space in Toronto sealed with our CleanSpace crawl space encapsulation system.

We are also experienced in dealing with water damage and mould problems in crawl spaces. Our CleanSpace crawl space encapsulation system seals your crawl space to keep out moisture and pests and prevent mould and rotting, making your entire home healthier and more comfortable while reducing energy costs. We also offer sump pumps and dehumidifiers specifically designed for crawl spaces that will keep the area moisture-controlled and watertight.

If you already have a mould problem in your crawl space, it’s important to act fast to keep the mould spores from spreading throughout your entire home. Mould can be a persistent problem that’s difficult to permanently remove, and can cause health issues such as increased allergy and asthma symptoms. Clarke Basement Systems provides wood damage repair, dry rot damage repair, mould prevention, and more to keep you and your family safe and comfortable with better indoor air quality.

Toronto expert basement and foundation repair services

Foundation problems are common in Toronto because of the frequent occurrence of basement flooding, which can cause foundations to crack. Even if you’ve never had water in your basement, you can still have foundation issues due to poor compaction, plumbing leaks, or expansive soils which tend to shift when there are changes in soil moisture. When the soil beneath your foundation expands or contracts, foundation settlement and sinking can occur as the soil layers become less stable.

Bowed wall in Toronto basement

Bowing, cracked basement walls are a common sign of a foundation problem.

Your foundation plays an invaluable role in holding up and supporting the rest of your home, so it’s essential to call in a professional foundation repair contractor as soon as you notice any signs of damage to ensure that the structural integrity of your home remains intact. Some common signs of foundation damage to look out for include:

  • Floor and wall cracks
  • Bowing basement walls
  • Windows and doors that stick
  • Cracks over doorways or around windows in the upper levels of the home

If you think you might have a foundation problem, we have the solutions and experience to effectively repair and stabilize your home. Our patented foundation pier systems can solve many foundation problems such as bowing walls, sagging crawl space, and foundation heave. We value the safety and satisfaction of our customers above all else, and our qualified foundation contractors will design a custom solution to solve your home’s specific needs!

Toronto PolyLevel concrete leveling for your sunken or damaged concrete

If you have a cracked or sinking concrete driveway, sidewalk, or patio, uneven concrete steps, or an interior concrete slab that’s sinking, PolyLevel concrete lifting from Clarke Basement Systems might be the right solution for your home. This state-of-the-art process uses an expanding foam which is injected under the damaged concrete to lift and stabilize the slab. PolyLevel is a faster, stronger, more affordable, and less invasive alternative to traditional mudjacking and concrete replacement.

Cracked, sinking sidewalk in Toronto

Do you have a walkway outside your home that looks like this? We can raise it with PolyLevel!

PolyLevel can restore your damaged and sunken concrete with permanent stability. We provide concrete leveling for pool decks, sidewalks, patios, driveways, concrete stairs, concrete slab floors, and more. With flat, level concrete surfaces, you can enjoy your home without concern about the safety liability of tripping on your property. Concrete leveling can also do wonders for restoring your home’s curb appeal and value, especially if you are preparing your home for sale. Why put up with the eyesore of cracked, damaged concrete when you can have a beautiful, even surface?

If you need basement waterproofing, crawl space repair, foundation repair, or concrete leveling services for your Toronto home, call the local experts at Clarke Basement Systems today. We offer free, no-obligation consultations and cost estimates in Toronto, ON, and throughout surrounding areas!

Case Studies From Toronto
New homes in Toronto are baving the weeping tile system connected to sump pumps rather than the city storm sewers. The builder of the home wanted to...
The homeowner had a single sump pump that was originally installed when the home was built. He was concerned about pump failure and power loss to the...
The basement block walls were damp with water seeping into the basement in one area. The basement floor was thin and in spots broken to expose the...
Press Releases From Toronto
Clarke Basement Systems is the winner of the HomeStars Best of 2013 award for foundations.... [Read more]
At this year's Team Basement Systems Convention, Clarke Basement Systems earned four awards for their waterproofing and foundation repair work throughout Toronto, Ontario.... [Read more]
Toronto, ON - Clarke Basement Systems has earned the “Best of 2012 in Toronto” award in the waterproofing category given by HomeStars. Home Stars offers a free service for homeowners to inquire about reputable companies and to write their own reviews about their experiences.... [Read more]
Job Stories From Toronto, ON
Wet Toronto, ON Basement Fixed With WaterGuard and TripleSafe

The City of Toronto, ON was having issues with one of their water waste plants, which was suffering from water intrusion into the basement after heavy rainfall. The building was 50 years old and was in need of repair, so they reached out to Clarke Basement Systems to remediate their problem.


Claude Mathieu went to the water waste plant to assess the situation, and found that they were in need of effective drainage. He suggested the DryTrak interior waterproofing system, combined with the Flangeless WaterGuard perimeter drainage system. He also advocated the use of the TripleSafe Sump Pump for added protection against future flooding. Primary Foreman Rob Trevisan brought a team of specialists to perform installation, and they have saved the water waste plant from future water issues.

CleanSpace and SaniDry Repairs Toronto, ON Crawl SpaceWhen Tony L. discovered his Toronto, ON crawl space was in disrepair, he knew ignoring the problem would only make it worse. Tony contacted Clarke Basement Systems, and their representative Claude Math

When Tony L. discovered his Toronto, ON crawl space was in disrepair, he knew ignoring the problem would only make it worse. Tony contacted Clarke Basement Systems, and their representative Claude Mathieu went out to diagnose the situation.


After examining the property, Claude was able to recommend several crawl space repair products, including the CleanSpace liner and a SaniDry high efficiency dehumidifier. Primary Foreman Jose Martinez and his team arrived on the scene to perform the installation and completed the project quickly and efficiently. Tony was grateful to Clarke Basement Systems for their hard work and courteous service, and he was very pleased with the outcome.

Work Requests From Toronto, ON
Brock Ave in Toronto
Hello, I'm looking to get an estimate to fix/replace a rotated beam in our basement crawlspace. Overall the crawlspace is in pretty rough shape and likely needs some waterproofing as well -- we had a small leak a few months ago when the snow melted suddenly. Thanks for your time! Kaitlin
Abbeywood Trail in Toronto
1 visible crack in the basement foundation. Need that repaired before it grows and gets worse. Need to inspect the rest of the foundation.
Elliotwood Corut in Toronto
My side door exterior access has a cement step set on a cement slab that is tilting towards the house. My concern is water draining towards the house (not yet happening)
Lindner Street in Toronto
Hello, We have a crawlspace to the rear of our home, under our kitchen. There are signs of rats and mice - a significant amount of droppings, there are holes to the outside (visible sunlight!) and to the neighbouring property, it is poorly insulated, and the space has no vapour barrier. It's an embarrassing nightmare! Would you be able to give me an idea what it might cost to clean it and seal it? Thank you! Heather Doherty Platel
Kenilworth Ave in Toronto
Looking to do some renovations. Interested in increasing basement height as well as dealing with some water leakage issues
Serving the following Toronto, ON postal codes
M3C 0C1, M3C 0C2, M3C 0C3, M3C 0E3, M3C 0E4, M3C 0H9, M3C 0J1, M3C 0L8, M3H 0C3, M3H 6A7, M3M 0A9, M3M 3G1, M4B 0A3, M4B 2J8, M4B 3E5, M4B 3E9, M4C 0A1, M4C 0A2, M4C 0A3, M4C 0A6, M4C 1A1, M4C 1A3, M4C 1A4, M4C 1A5, M4C 1A6, M4C 1A7, M4C 1A8, M4C 1A9, M4C 1B1, M4C 1B2, M4C 1B3, M4C 1B4, M4C 1B5, M4C 1B6, M4C 1B7, M4C 1B8, M4C 1B9, M4C 1C1, M4C 1C2, M4C 1C3, M4C 1C4, M4C 1C5, M4C 1C6, M4C 1C7, M4C 1C8, M4C 1C9, M4C 1E1, M4C 1E2, M4C 1E3, M4C 1E4, M4C 1E5, M4C 1E6, M4C 1E7, M4C 1E8, M4C 1E9, M4C 1G1, M4C 1G2, M4C 1G4, M4C 1G5, M4C 1G6, M4C 1G7, M4C 1G8, M4C 1G9, M4C 1H1, M4C 1H2, M4C 1H3, M4C 1H4, M4C 1H5, M4C 1H6, M4C 1H7, M4C 1H8, M4C 1H9, M4C 1J1, M4C 1J2, M4C 1J3, M4C 1J4, M4C 1J5, M4C 1J6, M4C 1J7, M4C 1J8, M4C 1J9, M4C 1K1, M4C 1K2, M4C 1K3, M4C 1K4, M4C 1K5, M4C 1K7, M4C 1K8, M4C 1K9, M4C 1L1, M4C 1L2, M4C 1L3, M4C 1L4, M4C 1L5, M4C 1L6, M4C 1L7, M4C 1L8, M4C 1L9, M4C 1M1, M4C 1M2, M4C 1M3, M4C 1M4, M4C 1M5, M4C 1M8, M4C 1N3, M4C 1N4, M4C 1N5, M4C 1N6, M4C 1N7, M4C 1N8, M4C 1N9, M4C 1P1, M4C 1P3, M4C 1P4

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