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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

Egress Windows

Before and After Pictures from Whitby
Concrete Island Causing a Serious Hazard, Whitby, ON

Concrete Island Causing a Serious Hazard, Whitby, ON

Before After
Concrete Island Causing a Serious Hazard, Whitby, ON Concrete Island Causing a Serious Hazard, Whitby, ON

A parking lot in Whitby, Ontario, had a concrete slabs that had sunken substantially on the inside the curb. This was causing many potential trip hazards for visitors to the Center. The Engineering Technician from the Town of Whitby wanted to fix this problem as soon as possible, before someone got hurt.    

The customer called Canadian Concrete Leveling to fix the island in the parking lot.  Our team injected PolyLevel foam into the sunken slabs. This lifted the concrete back to its original pour line and stabilized the concrete slab. The trip hazard is no longer existent and the technician is happy know they don't have to worry about it anymore.


Beautiful New Cleanspace® Walls in Whitby, ON

Beautiful New Cleanspace® Walls in Whitby, ON

Before After
Beautiful New Cleanspace® Walls in Whitby, ON Beautiful New Cleanspace® Walls in Whitby, ON

Our workers were so excited with this transformation that they couldn't hold the camera still! A beautiful waterproofing job completed in Whitby, ON, leaves the homeowner ecstatic! 

Sunken Patio Causing Water Leaking Concerns, Whitby, ON

Sunken Patio Causing Water Leaking Concerns, Whitby, ON

Before After
Sunken Patio Causing Water Leaking Concerns, Whitby, ON Sunken Patio Causing Water Leaking Concerns, Whitby, ON

A home in Whibty, Ontario had sinking concrete in their backyard. The patio around the pool had sunk a couple inches down and the step above the slab was becoming a trip hazard. This was also a concern because water was draining too close to the house. The customer was worried that water would intrude into the basement and further settling. 

The customer took precautions and called Clarke Basement Systems.  Billy McKeown and the Canadian Concrete Leveling crew came in and used PolyLevel Injections on the sinking patio by the house. The PolyLevel foam went deep beneath the concrete slab and filled in the voids that were allowing the concrete to sink. Now the customer has a leveled patio and no longer has to worry about water damage to the home. 


Company Awards
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]
Readers Choice Award Winner 2015
The Community of Markham has chosen our business as the winner of the annual Markham Economist & Sun Reader’s Choice... [Read more]
Clarke Basement Systems received #32 Dealer for Total Sales 2017-2018 out of hundreds of dealers across North America from Contractor... [Read more]
More Awards

Dependable Basement Waterproofing & Foundation Repair Contractor Serving Whitby, ON

We were devastated to find 3 inches of water in our newly renovated basement.  I would recommend Clarke Basement Systems without...
Happy Customers Surrounding Whitby, ON
Work Requests

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Reviews From Whitby
Testimonials From Whitby
My experience with Clark Basement Systems was fantastic. Chris answered all of our questions in a patient and easy to understand manner.
Testimonial by George E. from Whitby, ON
Needless to say we are relieved that the source wasn't related to the Clarke's installation and through the whole discovery process both Rob and Steve were...
Testimonial by Gunar Z. from Whitby, ON
Steve made me feel at ease right away. It was an easy decision to go with CBS!
Testimonial by Nancy S. from Whitby, ON

Basement Waterproofing & Crawl Space Repair in Whitby, 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 Whitby 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 in Whitby

Foundation repair problems destroy your Whitby 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
  • Sticking Windows
  • Underpinning

Concrete repair experts

The sunken and cracked concrete around your Whitby 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
Case Studies From Whitby
The homeowner noticed stair step cracks in brick veneer on the exterior and a space between the foundation wall and actual bricks. The floor in the...
On a brand new construction project it was found that the soil bearing the weight of the house was unstable, causing the front elevation of the house...
During a visit to a potential new home our customer noticed that the basement of the home had puddles of water in various locations throughout the...
Job Stories From Whitby, ON
Damp and Musty Basement Transformation in Whitby, ON

Loretta and Eric G. noticed the presence of a leak in their basement that caused the carpet and drywall to go mouldy. This was an issue as their youngest son was living in the basement, and the condition of the basement was affecting his quality of air and living. Loretta and Eric G. decided to contact Clarke Basement Systems for the best possible solution.

Our solution included the use of our patented CleanSpace® Basement Wall Vapor Barrier, WaterGuard® Below-Floor Drain and TripleSafe™ Complete Sump Pump System. These systems worked together to pump the water away from the house, as well as to remove the dampness and smell while reducing humidity.

Now Loretta, Eric and their son can enjoy their basement worry-free. Clarke Basement Systems is pleased to have been able to assist these Whitby, ON homeowners with transforming a wet, musty basement into a dry, healthy space!

Damp and Musty Basement Transformation in Whitby, ON - Photo 1
Fixing a Sinking Swimming Pool Deck in Whitby, ON

Mike M. noticed that his swimming pool deck started to sink unevenly and began pulling the coping liner away from the swimming pool. Canadian Concrete Leveling had an instant fix for this pool and tripping hazard.

The solution included using PolyLevel® to even out the deck. This miracle fix compound is made up of high-density polyurethane. Upon the injection of PolyLevel®, the chemical compound begins to expand to fill the void causing the unlevel concrete. Thanks to the PolyLevel® injection, not only has the initial issue been alleviated, but now any trip hazards have also been eliminated.

Now Mike is to enjoy his swimming pool deck once again. Canadian Concrete Leveling is pleased to have been able to resolve this Whitby, ON homeowner’s problem.

Fixing a Sinking Swimming Pool Deck in Whitby, ON - Photo 1Fixing a Sinking Swimming Pool Deck in Whitby, ON - Photo 2
Unreliable Sump System Replaced for THE BEST Sump System Available in Whitby, ON

Stephen S. was sick and tired of coming home to find his Whitby, ON, home’s basement completely submerged in water. Not only was it ruining all his stored items, but damaging the structural integrity of his home! He knew that he had to resolve this issue ASAP and couldn’t put it on the back burner any longer. Stephen researched the top Waterproofing companies in the Durham region  and decided to hire Clarke Basement Systems.


Steve Matthews, System Design Specialist, isolated the water seepage issue in Stephen’s home. He found that there was MASSIVE hydrostatic pressure against the foundation of the home, resulting in water driving into the basement. Normally, a sump pump would be able to keep up with all the water entering the home, but this was not the case. Due to the amount of water entering the basement, the generic home builder sump system could not keep up. Steve Matthews recommended that the customer replace his sump system with the TripleSafe™ Sump Pump System. 

The TripleSafe™ System keeps your basement dry with triple the protection. Most sump pumps fail because of either a failed pump, a pump that can't handle high volumes of water or power failure. The TripleSafe assures protection from all three-sump pump problems. Dave Jackson, our job foreman, installed the new sump system and noticed the hydrostatic pressure disappear within minutes! He also rerouted the water discharge line to an area farther away from the house, so that water wouldn’t continue to come back in.


There’s no doubt that Stephen can now enjoy a dry, healthy basement, and have peace of mind of knowing it won’t flood again.


Unreliable Sump System Replaced for THE BEST Sump System Available in Whitby, ON - Photo 1
Water Seepage No More! Whitby, ON

Brittany O. had water leaking into her Whitby home’s basement every spring thaw. The result was a damp, musty basement with damage to all her items stored down there. Brittany described the situation as “scary” because it was not only compromising the structural integrity of her home but was creating an unhealthy environment for her. She knew that the problem needed to be resolved properly, so she called Clarke Basement Systems.


Chris Luke, one of our System Design Specialists, put a foolproof plan together to resolve the water issue. Dave Jackson, the Foreman on the job, followed Chris’ plan and installed Cleanspace® walling to catch all the water seeping in through the foundation. The water flows to our patented WaterGuard® Below-Floor Drain System where the water gets redirected to the SuperSump® Premier Sump Pump System. All the water that was coming into the basement gets pumped out and away from the house, and the beautiful white Cleanspace® walls brightened up the basement too!


Since the job is complete, Brittany no longer considers her basement scary. She can now store her belongings down there without any fear of water damage! Her basement is now a healthy space for her and her family.

Water Seepage No More! Whitby, ON - Photo 1Water Seepage No More! Whitby, ON - Photo 2Water Seepage No More! Whitby, ON - Photo 3Water Seepage No More! Whitby, ON - Photo 4
Concrete Island Causing a Serious Hazard, Whitby, ON

A parking lot in Whitby, Ontario, had a concrete island that had sunken substantially, inside the curb stones. This presented many potential trip hazards for visitors to the Centre, which the Engineering Technician from the Town of Whitby wanted us to alleviate.    

The customer called us regarding the area next to the electric car charging station in the Iroquois Center parking lot. Our team came and in injected PolyLevel foam. This lifted the concrete back to its original position and allowed the concrete to be stable for the future. The trip hazard is no longer there and the technician is happy know they don't have to worry about it anymore.


Concrete Island Causing a Serious Hazard, Whitby, ON - Photo 1
Work Requests From Whitby, ON
Dublin Street in Whitby
I have water coming into my house for the second time this year after rainfalls in my crawlspace/basement
Stokely Cres in Whitby
Water is coming into the basement. I had the rear of the house repaired last year and now it seems the front of the house is also in need of a repair. I messaged Steve but not sure he is still with your company. Thanks.
Holsted Rd in Whitby
Have an aprox 3ft baseboard in teh basement that is showing water damage and some mold. Need to get it repaired.
King Street in Whitby
Hello, We have some water damage and mold in our finished basement laundry room. Trying to identify the source and what is required to fix the issue ahead of renovating the space.
Ian Fleming Crescent in Whitby
1. The pink wall insulation in the basement has absorbed water (coming through porous concrete wall). Because of this, there appear to be mold growth in the pink insulation (in two places). 2. There are three minor wall cracks in the basement. Have not seen water coming through these cracks. But would like to have these cracks repaired. 3. Basement has musty smell. 4. In the cellar, there is a small crack on the concrete ceiling. Some water (enough to wet the concrete) comes in through this crack when it is raining. 4. Cellar has musty smell. Would like to obtain a free quote on what would be your recommendations to fix the above issues and cost. Thanks.
Lafayette Boulevard in Whitby
Water found in furnace room. Can not locate source. I have also found Mold on drywall in area. Looking for a quote.
Splendor Drive in Whitby
Small damp spot where the slab floor and poured concrete wall meet in basement.
WatfordStreet in Whitby
Have a leak a tt the floor cove joint could someone contact please
Hialeah Crescent in Whitby
Baldwin St N in Whitby
Water entering from corner of cold cellar
Heaver Drive in Whitby
Sunken front porch steps. Requires repair.
Country Lane in Whitby
Basement leaks
Strandmore Circle in Whitby
Good morning, Do you do concrete jacking/repair? I have a section that needs to be lifted by a pool. Thanks.
Regal Briar Street in Whitby
Part of the concrete pad around my swimming pool has heaved and needs levelled
Kent Street in Whitby
Hello, I have two estimates I'd like 1) I recently had a concrete slab poured and the surface is pitted, uneven and blisters. I am not sure if the repair can be done before it is fully cured, but I'd like a quote to repair surface. 2) I have a pool deck that has uneven concrete and I just learned on this website that it can be raised and I'd like a quote on that. thank you,
Bluebell Cres in Whitby
Selling the house - home inspector says there is a crack in foundation - would like to get it looked and quoted for repair ASAP please . Thanks, Gayle
Kent St. in Whitby
Front concrete walk way needs to be leveled. Please provide free written quote. Thank you.
Trinity Crescent in Whitby
Hi there. I'm interested in a quote to raise my concrete pool deck. It has settled in one area. Thank you.
Grand Trunk St in Whitby
Part of the house used to be a deck and the foundation is above ground, as a result that part of the house is sinking. We need to put in support.
Kenneth Hobbs Ave in Whitby
There are a couple of spots in our small unfinished basement that have leaked in the past, and we have just noticed what appears to be a bit of mold in some insulation. We would like an estimate on having the mold safely removed, and having the walls sealed in some way to prevent future water intake. (We are planning to have the basement finished in the near future)
Serving the following Whitby, ON postal codes
L1M 0A1, L1M 0A2, L1M 0A3, L1M 0A4, L1M 0A5, L1M 0A6, L1M 0A7, L1M 0A8, L1M 0A9, L1M 0B1, L1M 0B2, L1M 0B3, L1M 0B5, L1M 0B6, L1M 0B7, L1M 0B8, L1M 0B9, L1M 0C1, L1M 0C2, L1M 0C4, L1M 0C5, L1M 0C6, L1M 0C7, L1M 0C8, L1M 0C9, L1M 0E1, L1M 0E2, L1M 0E3, L1M 0E4, L1M 0E5, L1M 0E6, L1M 0E7, L1M 0E8, L1M 0E9, L1M 0G1, L1M 0G2, L1M 0G3, L1M 0G4, L1M 0G5, L1M 0G6, L1M 0G7, L1M 0G8, L1M 0G9, L1M 0H1, L1M 0H2, L1M 0H3, L1M 0H4, L1M 0H5, L1M 0H6, L1M 0H7, L1M 0H8, L1M 0H9, L1M 0J1, L1M 0J2, L1M 0J7, L1M 0J8, L1M 0J9, L1M 0K1, L1M 0K2, L1M 0K3, L1M 0K4, L1M 0K5, L1M 0K6, L1M 0K7, L1M 0K8, L1M 0K9, L1M 0L1, L1M 0L2, L1M 0L3, L1M 0L4, L1M 0L5, L1M 1A1, L1M 1A2, L1M 1A3, L1M 1A4, L1M 1A5, L1M 1A6, L1M 1A7, L1M 1A8, L1M 1A9, L1M 1B1, L1M 1B2, L1M 1B3, L1M 1B4, L1M 1B5, L1M 1B7, L1M 1B8, L1M 1B9, L1M 1C1, L1M 1C2, L1M 1C3, L1M 1C4, L1M 1C5, L1M 1C6, L1M 1C7, L1M 1C8, L1M 1C9, L1M 1E1, L1M 1E2, L1M 1E3, L1M 1E4, L1M 1E5, L1M 1E6, L1M 1E7, L1M 1E8, L1M 1E9, L1M 1G1, L1M 1G2, L1M 1G3, L1M 1G4, L1M 1G5, L1M 1G6, L1M 1G7, L1M 1G8

our service area