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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

Aspen Air Filter

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
LintelLift Garage Lintel Repair

Before and After Pictures from Mississauga
TripleSafe™ Installation in Mississauga, ON

TripleSafe™ Installation in Mississauga, ON

Before After
TripleSafe™ Installation in Mississauga, ON TripleSafe™ Installation in Mississauga, ON

Looking for protection from a potential sump failure and a flooded basement this Mississauga, ON homeowner, contacted us. They wanted their basement to be kept dry all the time with no more worries about it in the future. We installed our TripleSafe™ Complete Sump Pump System with three levels of protection for the basement.

Filling Voids Underneath Front Step in Mississauga, ON

Filling Voids Underneath Front Step in Mississauga, ON

Before After
Filling Voids Underneath Front Step in Mississauga, ON Filling Voids Underneath Front Step in Mississauga, ON

An animal had dug out a hole under this front step causing it to settle. Billy, Installation Foreman, used PolyLevel® Injection to lift and stabilize the step while filling in the voids created by the animal. He then used our NexusPro® Joint Sealant to seal the gap between the patio and the stoop to prevent any other water damage.

Front Slab Lift in Mississauga, ON

Front Slab Lift in Mississauga, ON

Before After
Front Slab Lift in Mississauga, ON Front Slab Lift in Mississauga, ON

 Four slabs at the front of a house in Mississauga, ON have been lifted by our patented PolyLevel® Injection resulting in eliminated trip hazards, as well as improved step height and slope.

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]
More Awards

Mississauga, ON's Go To Basement Waterproofing & Foundation Repair Experts

Every time I contacted Clarke Basement, they were on time and returned any calls promptly, and if i had any...
Happy Customers Surrounding Mississauga, ON
Work Requests

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Reviews From Mississauga
Testimonials From Mississauga
This is the way a company should do business!
Testimonial by Gary M. from Mississauga, ON
Lucio & Russell are exceptional at their craft! Experts, knowledgeable and precise. With every detail,...
Testimonial by Josephine C. from Mississauga, ON
Our experience was positive and we would not hesitate to hire Clarke Basement Systems again should the need...
Testimonial by Pat M. from Mississauga, ON

Mississauga, ON Basement Waterproofing Company

Basement waterproofing in Mississauga, ON

This TrenchDrain prevents additional water from entering the basement from the outside.

Mississauga lies on the shores of Lake Ontario in the Southern Ontario. Home to around 714,00 residents, Mississauga is the sixth-largest city in Canada – and these homeowners need access to a proven basement waterproofing company to solve their wet basement problems. Clarke Basement Systems has been serving Mississauga ever since we opened our doors in 2003, and we're the company to call if your basement is in trouble!

A wet basement or crawl space can lead to numerous hazards for your home. Mould or rot can grow and cause poor indoor air quality and structural damage, while dampness humidity is also uncomfortable. Your basement will quickly become unusable, and you'll have to remove stored items or laundry appliances. This will also most likely decrease the value of your home overall.

Rather than having to deal with a bigger mess in the long run, let Clarke Basement Systems install a complete basement waterproofing system that will protect your home! We offer a variety of sump pumps, drainage lines, dehumidifiers, and additional products to make your basement a drier, cleaner space. We also specialize in crawl space encapsulation, which uses unique crawl space products – including an extremely popular moisture barrier – to prevent moisture and water vapor from entering the space.

Get the most from your below-the-home spaces by working with Clarke Basement Systems for your waterproofing needs. Our fully trained and certified specialists are authorized by Basement Systems, Inc. to use their proven, warrantied products in your home. Schedule a free estimate in Mississauga today!

Foundation & Structural Repair in Mississauga

diagram of foundation slab that is experiencing upheaval in Mississauga, ON

Foundation or slab heave is one of the many foundation problems your home may be experiencing.

Clarke Basement Systems is also a foundation repair specialist able to restore stability to your home. The soils around your home are crucial to bearing the weight of your foundation and the rest of your home. But a variety of factors can create difficulties in this process and will eventually damage your foundation. Have you noticed any of these symptoms around your home?

  • Sagging floors and floor cracks
  • Wall cracks
  • Bowing walls
  • Sticking doors and windows
  • Tilting chimneys

Clarke Basement Systems's foundation experts will be able to pinpoint the cause of your foundation troubles by inspecting these symptoms and the conditions of your property. Once we know what the problem is, we'll be able to recommend the best course of action using our Foundation Supportworks proven products. From foundation piers to wall braces, we have the technology to restore your foundation; and all of these products come with a written warranty for your peace of mind!

Don't forget to check your garage lintel for signs of structural stress. The garage door carries a lot of weight above it, which can cause the lintel to become weakened or compromised over time. Cracks along the brickwork, sagging, and pulling away from the home can be due to a failing garage lintel. We offer expert garage lintel repair by installing the patented LintelLift garage lintel repair system.

We've seen all kinds of foundation, crawl space, and basement issues in the past, and your home should not be any more difficult than the problems we've fixed before. We offer free estimates for all of our services in and around Mississauga - schedule yours today!

Case Studies From Mississauga
Karen from Mississauga had just recently had her mom move in with her in her basement. However, a part of the basement had still not been finished,...
This home on the quiet side of Mississauga had a basement that gave the homeowners trouble for four years straight. The room with the Sump Pump and...
Purchasing a new home is always an exciting, and sometimes nerve-racking, experience. Whether it’s your first home or your fifth, you’re...
Job Stories From Mississauga, ON
New Basement Apartment Becomes Unlivable due to Water Seepage

Karen from Mississauga, Ontario, had just recently moved her mom into her basement and was in the middle of transforming it into a proper apartment. Unfortunately, the small unfinished part of the basement had some water seepage from the garage wall. After speaking to System Design Specialist, Dean Merendino, he designed a well-suited solution for Karen and her mom.


A team from CBS first installed our WaterGuard® interior drainage system. Next, they encapsulated the space with our CleanSpace® wall membrane and replaced the old sump with our patented SuperSump®. Collectively; the three installations will work together to collect and dispose of any unwanted water that finds its way into the apartment. When the crew finished, Karen and her mother were thrilled they had chosen the right people to look after their home.


Existing Customer Requests New UltraSump®

A previous customer that used Clarke Basement Systems was so impressed with our previous waterproofing that they asked for us to come back as they believed it was time for a new sump pump. Installation Professional Lucio Flores went and installed our patented UltraSump® system. The UltraSump® is equipped with a battery backup that will turn on when a power failure, or outage occurs. We also equip discharge lines with our IceGuard® to prevent any blockages from ice or debris when reaching the exterior of the home.


Think it’s time for a new sump? Call us today!

Basement used to leak every year? Mississauga, Ontario

This home in Mississauga, Ontario, had a basement that was causing the owners trouble every spring season. The cellar has multiple floors yearly, so the HVAC room had a leak trickling down to the basement's lower level. The flooding would leave inches of water throughout the whole bottom floor. This would cause the foot to warp, belongings to be damaged, and potential room for mold to grow throughout the basement. With the homeowners calling in waterproofers every year, they did not find one that fixed the job permanently - until they found us. With some research and looking at the top of their search, the homeowners found us- Clarke Basement Systems. Once the appointment call was made, we could send our friendly and honest System Design Specialist, Dean Merendino, to the home for a better look. He suggested our wall membrane and perimeter drainage system to make this basement waterproofed ultimately. The owners trusted his opinion and knew, based on his experience, that he was trustworthy to proceed with the work.



Later that week, our installation duo, Dustin and Alan, arrived at the home to start the waterproofing job. The job was to take half the work day and take two days to properly cure the concrete that was poured on top. Step by step will be to cut out the existing wet drywall along the floor line; from there, we will jackhammer a trench on the perimeter of the floor to create our drainage system. Our clean space membrane will be installed to prevent water from penetrating the walls, our piping in the trench, gravel, then concrete on top. The process seems simple when listed, but Dustin and Alan need to be precise with measurements and ensure they don't disrupt any of the electrical and drainage. The work was done immaculately, and the finished product made it look much neater than the work before. The homeowner was initially skeptical since she wanted to ensure the job was done correctly and know if it would hold out for many years to come. Alan cleaned up the job well, and we used our HEPA-filtered fan to remove all floating dust particles and protect the basement. She was thrilled to see the fantastic work and wanted to the right a review for the great experience. 

Basement used to leak every year? Mississauga, Ontario - Photo 1Basement used to leak every year? Mississauga, Ontario - Photo 2Basement used to leak every year? Mississauga, Ontario - Photo 3
Front Step Settled in Mississauga, ON

 Our customer in Mississauga, Ontario, had an issue with the front step of their home that had been sinking for a few years. Recently our customer had noticed that an animal had dug out a large hole underneath the concrete which further weakened the substrate, creating an area where water could wash out any loose soils.


John DiNicolantonio, Project Lead, informed our customer on how the installation process would work. Billy, Installation Foreman, installed:


  • Polyurethane
  • NexusPro™ Joint Sealant 


Our Polyurethane foam is injected beneath the concrete to lift and level the slabs. The foam compresses the substrate and then lifts the concrete, thus ensuring that the area is protected from further settlement. Billy used our NexusPro™ Joint Sealant as a caulking to seal any cracks and gaps in the concrete to prevent water from penetrating the substrate.

 Our customer was pleased that our team was able to lift the step back up to its original height and were able to stabilize the rest of the walkway to protect the area from further settlement.

Uneven Driveway in Mississauga, ON

Walter  of Mississauga, Ontario had an uneven driveway located at the entrance of his garage. The cement had cracked and had become a tripping hazard for the customer. The customer also had further concerns that water would leak into the cracks and freeze causing further damage to the driveway. Due to the unevenness of the driveway, the customer had a struggle getting into the garage with his vehicle due to the change in the height.

After a full review of the problem, Bill and Kyle were able to inject a structural grade polymer into the cement to fill the voids which allowed the concrete to lift and stabilize. The nexus pro sealant was used to seal and fracture cracks that may cause further damage to the driveway.

Walter was very pleased with the work done. With having the garage at a safe height, he can now enter the garage with a vehicle. The driveway has an overall more appealing look, without the worry of being a tripping hazard.

Multiple Crack Repair in Mississauga, ON

A home in Mississauga, Ontario had several wall cracks located in the basement and crawlspace. The wall cracks were leaking causing damage to some wall material in the finished area of the basement and there was water on the floor of the crawlspace which could damage stored items. The homeowner didn't want the problems to worsen and wanted to finish parts of the basement. 

The customer called Clarke Basement Systems and spoke to Ron Monk who explained everything that would be done to the impacted areas. Mark Dougherty and the team came in and installed Flexispan Wall Crack Repair System and Drainage systems. Flexispan seals the crack with a polyurethane sealant then provides a secondary drainage strategy to ensure the wall crack never leaks again. No amount of wall movement will cause the crack to leak again. The crack is sealed first with a flexible polyurethane sealant. A secondary drainage membrane is installed over the first layer and then a third layer of the polyurethane sealant is applied. The floor is opened up below the crack and cactus board is installed on the footing. When the floor is restored, the cactus board allows for a gap between the floor and wall and footing and floor. This drainage strategy ensures that if the crack ever leaked through the first polyurethane seal it would be drained to the sub-floor by the secondary drainage membrane.

The customer was satisfied because the cracks were permanently repaired with a 25 year warranty against leakage. The warranty is nationally backed through the Basement Systems Dealer Network and is transferable should they decide to sell the home.


Multiple Crack Repair in Mississauga, ON - Photo 1
SuperSump and WaterGuard Remedy Leaky Mississauga, ON Basement

When Brendon & Anne C. discovered significant water intrusion into their basement, they knew they needed to act before they suffered property damage. While trying to find a contractor up to the challenge, they found Clarke Basement Systems.


Don Clarke met with the couple to diagnose the severity of the situation, and after close inspection he recommended the WaterGuard Perimeter Drainage System, ThermalDry Wall Waterproofing, SuperSump sump pump system, and finally IceGuard to prevent drain lines from freezing. Primary Foreman Jose Martinez oversaw the installation, ensuring a long-lasting solution to Brendon and Anne’s leaky basement. The couple was very happy with the results and would recommend Clarke Basement Systems to others.

Work Requests From Mississauga, ON
Project Location: Mississauga, ON
I have a foundational water leak.
Project Location: Mississauga, ON
Leak in the cold room
Project Location: Mississauga, ON
Rotting floor joist repair
Project Location: Mississauga, ON
Damp wet cold room
Project Location: Mississauga, ON
Garage floor is often wet after rain storm thus I think that there is leaking from outside wall into the garage.
Project Location: Mississauga, ON
We have an addition that was built in 1992. There was material drywall cracking which was repaired and reappeared a year later. We are looking to see what it would take to shore up the foundation as likely root cause. Ground underneath is clay.
Project Location: Mississauga, ON
Step cracking in shared party wall through garage and back into house area, and stucco cracks in basement on interior wall of attached semi detached homes.
Project Location: Mississauga, ON
My sump pump is getting old and I would like a quote on a new one installed with battery back-up. Thank you. Wesley
Project Location: Mississauga, ON
A noticeable stair like cracks a long the side wall of my garage as well as in one corner under the lintel.
Project Location: Mississauga, ON
Small job for a senior citizen. Backyard shed is sinking. Need to lift it and place a foundation. Hoping you do small jobs too. Thanks
Project Location: Mississauga, ON
I see the house in all 3 levels floor sag toward the center, and the doors jammed.
Project Location: Mississauga, ON
Water and moisture on the cold cellar floor. Would like to know where the water is coming in from and how to prevent it.
Project Location: Mississauga, ON
House doesn't have basement but seems like it's sinking in the middle of the structure.
Project Location: Mississauga, ON
Water seeping into my basement due to a crack in foundation wall. House next door was demolished and they had water flooding from their service pipe, which apparently was not shut off. Restoration crew opened up the drywall and found the crack. Need to have the crack sealed and ensure no other immediate seepage in that section of the foundation. Cost efficiency is important for us. We are existing customers with our sump pump.
Project Location: Mississauga, ON
We notice quite a bit of moisture on our cold room walls and would like a solution to this problem. Would like advice and a quote.
Project Location: Mississauga, ON
A couple of small leaks detected during snow-melt. Looking for repair options before we finish the basement.
Project Location: Mississauga, ON
We have a leak in the cold cellar in our basement.
Project Location: Mississauga, ON
Based on some signs of a problems in the interior and exterior of the house, we want to find out if we have a foundation issue, and if we do, what are the solutions.
Project Location: Mississauga, ON
Bowing wall in basement, new cracks on main floor walls and ceiling
Project Location: Mississauga, ON
Hi, I have a couple of cracks develop on my garage wall. Looking to have it fixed. Best Regards, Neil.
Serving the following Mississauga, ON postal codes
L4T, L4V, L4W, L4X, L4Y, L4Z, L5A, L5B, L5C, L5E, L5G, L5H, L5J, L5K, L5L, L5M, L5N, L5P, L5R, L5S, L5T, L5V, L5W, M7A, M7R
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