Proudly Serving Greater Toronto including - Mississauga, Markham, Vaughan & nearby

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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
ShotCrete Wall Restoration

Concrete Repair
PolyLevel Concrete Lifting & Leveling
NexusPro Cracked Concrete Repair
SealantPro Concrete Sealant
Interior Slab Repair
Concrete Sidewalk Repair
Concrete Pool Deck Repair
Concrete Driveway Repair

Before and After Pictures from North York
Bigger Window and Dry Basement in Toronto, ON

Bigger Window and Dry Basement in Toronto, ON

Before After
Bigger Window and Dry Basement in Toronto, ON Bigger Window and Dry Basement in Toronto, ON

A home in Toronto, Ontario was experiencing basement flooding due to a window located close to a downspout. It was not draining away the water fast enough and when it rained the homeowners spent a lot of time mopping up the water to prevent damage from the flooding.  

The customer called Clarke Basement Systems and Claude Mathieu explained the solution we came up with to rid them of their problem. Don Clarke and the team came in and excavated to create new positive drainage.  They installed the new SunHouse™ Window Well enclosure allowing more sunlight in, and none of the leaves and debris backing up the drain would cause the basement to flood again.  

The homeowner was pleased knowing they wouldn't have to waste any time cleaning up water that leaked into the basement. They wouldnt need to pay for damaged floors and the window brought in more light. 

Our Solution to Failure of Proper External Waterproofing in Toronto, ON

Our Solution to Failure of Proper External Waterproofing in Toronto, ON

Before After
Our Solution to Failure of Proper External Waterproofing in Toronto, ON Our Solution to Failure of Proper External Waterproofing in Toronto, ON

A home in Toronto, Ontario had a basement that was very damp and leaked in several locations when it rained. The basement is large, and they would see water coming up through the ceramic tile joints.  The issue was hydrostatic water pressure from below the house, as well as moisture penetration through the foundation walls. This unwanted water entry was a result of a failure of a proper external waterproofing system when building the home. The basement was finished, and they wanted to have space with no water leaking in causing mould and damage.

The customer no longer wanted to deal with a smelly basement and damaged items, so they called Clarke Basement SystemsJose Martinez and the team installed a WaterGuard® around the perimeter of the basement to capture groundwater.  A ThermalDry® Wall membrane was used to direct moisture from foundation walls and direct it to the WaterGuard.  A SuperSump® Premier sump pump with UltraSump® Battery Back-up in case of a power failure was installed to collect water and discharge it outside through our IceGuard® Discharge Line System. This system ensures that any ground water penetrating the basement is captured and pumped away from foundation. The customer is happy knowing they can finish the basement and use the space with no worry about water damage.



Leaking Front Window Turns Soaks Basement in Cookstown, Ontario

Leaking Front Window Turns Soaks Basement in Cookstown, Ontario

Before After
Leaking Front Window Turns Soaks Basement in Cookstown, Ontario Leaking Front Window Turns Soaks Basement in Cookstown, Ontario

When dealing with a stressful situation, lightening the mood can be helpful. Sometimes we make fun of the situation we're in, or we give something a quirky name.

A couple in Cookstown, Ontario, was dealing with a water seepage issue below their front window. The water was preventing them from utilizing their basement, and they had started referring to it as the "exterior fishbowl." They dreamed of finishing their basement but wanted to get rid of the fishbowl first.

They decided to reach out to Clarke Basement Systems. System Design Specialist Chris Luke met the couple at their home and inspected the space.  He designed a system to keep their basement dry and give them the means to finish the room with confidence.

Foreman Jose Martinez dug a trench around the basement's perimeter and installed our WaterGuard® Drain System. The customers already had a sump system in place, so Jose connected the drain to the system. The basement encapsulated with CleanSpace® to stop moisture at the walls, and a WellDuct® was installed beneath the window. 

The homeowners can't wait to finish their basement finally. They're happy with the work done by our team and no longer have an exterior fishbowl.

Company Awards
Best of 2019 Homestars Award
Hailed as HomeStars' highest honour, the Best of Awards, presented by DEWALT, Canadian Contractor and RenoRun, recognizes the most trusted... [Read more]
HomeStars Best of 2016 Award
Clarke Basement Systems has been awarded the HomeStars Best of 2016 award which we are very proud of.... [Read more]
More Awards

Foundation Repair & Concrete Leveling Experts in North York, ON

I thought you did a fabulous job. I was so happy.  I called, the salesman came right away. I said...
Happy Customers Surrounding North York, ON
Work Requests

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Reviews From North York
Testimonials From North York
This far exceeded our expectation and allowed us to move forward with the balance of our basement project!
Testimonial by Trevor K. from Toronto, ON
"I highly recommend him, he's a great asset to the company"
Testimonial by Domenic V. from Toronto, ON
Did a great job, was on time and cleaned up the work area.
Testimonial by Ali J. from Toronto, ON

Basement Waterproofing Experts Serving North York, ON

Water in the basement or crawl space leads to mold, rot, musty odors and structural issues. It also leads to a reoccurring headache for you. Luckily, Clarke Basement Systems has a team of trained experts that are available to permanently fix the problem.

We will properly install a hidden drainage system in your North York basement and completely encapsulate your crawl space with CleanSpace vapor barrier. We are here to solve the problem for you.

Why Choose Us?
  • Lifetime Warranty on all Perimeter Waterproofing Systems
  • 25-year Warranty on Crawl Space Encapsulation Systems
  • Sump Pump Installation, Repair & Replacement
  • Basement, Crawl Space & Spray Foam Insulation
  • Crawl Space & Basement Dehumidifiers
  • Hundreds of Satisfied Customers

Foundation Crack Repair Contractor

Foundation repair problems destroy your North York home’s value and can be dangerous. Our in-house team of structural and geo-technical engineers are here to help. We design and install the right solution and usually have the project finished in less than a week. You will have peace of mind as we provide a 25-year written warranty against defects on our foundation products.

We Fix
  • Bowing Walls
  • Sagging Floors
  • Stair-Step Cracks
  • Tilting Chimneys  
  • Foundation Cracks
  • Garage Slabs   
We Use
  • Wall Anchors
  • Slab Piers
  • I-Beam Wall Braces
  • Helical Deck Piers
  • Underpinning


Crawl Space Vapor Barrier Encapsulation Experts

Crawl space encapsulation is the best way to eliminate musty odors, mold, moisture and mildew. Clarke Basement Systems has a team of dedicated crawl space encapsulation experts with decades of experience and warrantied products. Our patented crawl space vapor barriers provide a dependable moisture barrier that is guaranteed to last 25 years. Trust our crawl space encapsulation team to permanently fix your leaky or damp crawl space. Our crawl space encapsulation services are proven, dependable and warrantied. Call or click today to schedule your FREE crawl space encapsulation estimate!

Benefits of our Crawl Space Vapor Barriers:

  • Seal Out Cold Air, Humid Air & Moisture
  • Prevent Crawl Space Leaks
  • Improve Energy Efficiency
  • Durable Crawl Space Vapor Barrier Material with 25-year Warranty

Fast & Affordable Concrete Repair

The sunken and cracked concrete around your North York home is both an eyesore and a safety hazard. It is also likely to get worse with time, but we can fix it for you!

Our experts use PolyLevel, a superior polyurethane foam to provide reliable concrete lifting & leveling solutions. Small holes are drilled in the concrete and the expansion of the foam lifts & levels the concrete. The majority of contractors you will call use mudjacking instead of foam. Mudjacking is heavier, requires larger holes in the concrete and does not last as long as PolyLevel.

If your home has cracked concrete steps, pool decks, patios, or other slabs, then NexusPro is the right solution. NexusPro repairs concrete cracks and joints and is ultra-durable, so it will withstand UV rays, extreme weather, and more.

After utilizing our expert concrete repair solutions, consider the powerful concrete sealant, SealantPro. SealantPro further protects your concrete by bonding with it to guard against oil, gasoline, liquids, and other debris. In just one coat, SealantPro extends the life of your concrete by 3 to 5 times overall. 

Call us today to learn more about our proven concrete leveling, cracked concrete repair, and concrete sealing techniques.

We Fix
  • Cracked Driveways
  • Uneven Patios
  • Sinking Sidewalks      

  • Uneven Concrete
  • Sunken Pool Decks
  • Highway & Commercial Issues
  • Changes saved.
Case Studies From North York
The homeowner had groundwater seepage throughout the finished basment and crawlspace of his home. The foundation was built from block. The...
The homeowner had discovered step cracking in the brickwork on the front face of his garage above the door and along the side of the garage. The...
Our customer had a finished basement that was ready for a face lift, the customer called Clarke Basement Systems before refinishing the basement as...
Press Releases From North York
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 thei...
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 wate...
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 North York, 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.

Work Requests From North York, ON
Project Location: North York, ON
We are looking to have our existing sump pump system replaced.
Project Location: North York, ON
The sidewalk leading to my front porch has sunk over time. It is 7 feet wide and 2 feet deep.. I need to raise the sidewalk up to make a new step. It needs to be raised 5 inches on one side and 7 inches on the other
Project Location: North York, ON
A bedroom and a spare room in the basement have floor water damage. I have someone who fixed part of the basement but I have no comparative price for this part of the job nor do I know his skill in fixing leaks The floor is tile covered with an artificial wood.
Project Location: North York, ON
Sump pump works well but there is loud echoing sound that is produced every time is runs as well as a knocking at the end, looking for a system that is MUCH quieter to help reduce the noise
Project Location: North York, ON
We noticed mold in our basement and tried opening some drywall to take a look. We saw black mold developing along the edges of the wall floor, and there are signs of water on the ground but we don't know where the water comes from.
Project Location: North York, ON
I'm thinking of concrete injection for my sunroom. Concrete has sunk.!
Project Location: North York, ON
Foundation leak
Project Location: North York, ON
We have an older home, and have done some renovations recently. We need to install new window wells to our basement. Pease contact me so we can get an estimate. Thank you.
Project Location: North York, ON
Wet basement area (wall and bottom of basement steps)
Project Location: North York, ON
Minor seepage in the basement after heavy rain. Need to locate source of seepage and assess repairs. Possible crack in the foundation wall.
Project Location: North York, ON
Foundation settling, stair-step crack in the brick veneer, sticking door
Project Location: North York, ON
I recently purchased a house in Pickering and we have gutted the basement. there are 2 cracks in the foundation that are not wet now but i would like to proactively fill/repair them
Project Location: North York, ON
Our house is a 1962 North York semi with a partially finished basement. We've owned the house for two years; every spring and winter, especially in periods of heavy rain or snow melt, we seem to get some water or dampness coming through the cinder block walls of the unfinished section of the basement. We had some cracks around our foundation & driveay which were repaired in the summer, which we thought was the source of the problem. However, with the recent snow melt, we are still getting water seepage in all the same places. I'm afraid either our weeping tiles are overflowing, or the moisture is coming in through the ground. Each of the three instances of water seepage is coming through the cinderblock walls, about 6 inches off the floor, and it is worst in the cantina from the adjoining wall with our neighbours. We would love it if you could provide some options/solutions. We would like to finish the basement and put in a bathroom, but don't want to do so until we find and fix the source of these water issues. Thank you!!
Project Location: North York, ON
Slanded floor
Project Location: North York, ON
I was wondering how much it would cost to waterproof a 500-600 sqft basment?
Project Location: North York, ON
I have not noticed any issues in basement but previous ownders had added a room to back of house. large void have opened up as if the room is pulling apart from rest of house.
Project Location: North York, ON
Retaining wall leaning
Project Location: North York, ON
I am doing a reno for my basement after I try out all the drywall I saw some wood was damaged. But I am not sure what it is.
Project Location: North York, ON
Water is coming in through a part of my basement. May have a foundation crack, not sure but want to fix.
Project Location: North York, ON
Request for Helical Piles prices. The following is the dropbox link to download the complete set of tender documents:
Serving the following North York, ON postal codes
M1L 4R9, M1L 4S1, M1R 1P6, M1R 1P7, M1R 1R1, M1R 1R2, M1R 1R3, M1R 1R4, M1R 1R5, M1R 1R6, M1R 1S6, M1R 1S9, M1R 1T1, M1R 1T6, M1R 1T9, M1R 1V2, M1R 1V7, M1R 1V9, M1R 5G7, M2H 0A1, M2H 0A3, M2H 0A4, M2H 0A5, M2H 1A1, M2H 1A2, M2H 1A3, M2H 1A4, M2H 1A5, M2H 1A6, M2H 1A7, M2H 1A8, M2H 1A9, M2H 1B1, M2H 1B2, M2H 1B3, M2H 1B4, M2H 1B5, M2H 1B6, M2H 1B7, M2H 1B8, M2H 1B9, M2H 1C1, M2H 1C2, M2H 1C3, M2H 1C4, M2H 1C5, M2H 1C6, M2H 1C7, M2H 1C8, M2H 1C9, M2H 1E1, M2H 1E2, M2H 1E3, M2H 1E4, M2H 1E5, M2H 1E6, M2H 1E7, M2H 1E8, M2H 1E9, M2H 1G1, M2H 1G2, M2H 1G3, M2H 1G4, M2H 1G5, M2H 1G6, M2H 1G7, M2H 1G8, M2H 1G9, M2H 1H1, M2H 1H2, M2H 1H3, M2H 1H4, M2H 1H5, M2H 1H6, M2H 1H7, M2H 1H8, M2H 1H9, M2H 1J1, M2H 1J2, M2H 1J3, M2H 1J4, M2H 1J5, M2H 1J6, M2H 1J7, M2H 1J8, M2H 1J9, M2H 1K2, M2H 1K3, M2H 1K4, M2H 1K5, M2H 1K6, M2H 1K7, M2H 1K8, M2H 1K9, M2H 1L1, M2H 1L2, M2H 1L3, M2H 1L4, M2H 1L5, M2H 1L6, M2H 1L7, M2H 1L8, M2H 1L9, M2H 1M1, M2H 1M2, M2H 1M3, M2H 1M4, M2H 1M5, M2H 1M6, M2H 1M7, M2H 1M8, M2H 1M9, M2H 1N1, M2H 1N2

our service area

Clarke Basement Systems service area