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

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

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 Cobourg
Full Basement Waterproofing in Oshawa, ON

Full Basement Waterproofing in Oshawa, ON

Before After
Full Basement Waterproofing in Oshawa, ON Full Basement Waterproofing in Oshawa, ON

A home in Oshawa, Ontario had water leaking into the basement. There was water at floor wall joint as well as cracks on the foundation wall that had attempted to fix. The homeowners couldn't use their basement anymore due to mould and constant water making the area unhealthy. 

The customer called Clarke Basement Systems to fix their basement problems and make use of the space again. Steve Matthews, the inspector,  explained what we would be doing to correct these water issues. Lucio Flores and the team came in and installed a WaterGuard® Below-Floor Drain, CleanSpace® Vapour Barrier, TripleSafe™ Complete Sump pump and an IceGuard® Discharge Line System. The CleanSpace® was installed on all the walls keeping the moisture and water away from the basement, dropping it all into the installed WaterGuard®. The WaterGuard® pushes all the water into the TripleSafe™. The sump pump pushes the water out through the IceGuard® away from the home. This leaves the customers confident in renovating their basement again and no worrying about water damage in the future. 

Egress Window Installation in Cobourg, ON

Egress Window Installation in Cobourg, ON

Before After
Egress Window Installation in Cobourg, ON Egress Window Installation in Cobourg, ON

A homeowner wanted a new egress window installed in order to meet the building requirements for a basement apartment. Now the customer has larger windows that allow the sunlight into the basement for a brighter space.

A Flooding Basement Church in Cobourg, ON

A Flooding Basement Church in Cobourg, ON

Before After
A Flooding Basement Church in Cobourg, ON A Flooding Basement Church in Cobourg, ON

A church in Cobourg, Ontario, had a basement that water was found puddling in, in the low areas of the floor. This was happening because of hydrostatic pressure pushing water up through the floor. With constant puddles, comes water damage and odours that no customer wants.

The customer called Clarke Basement Systems and we came up with a solution that fit their needs and budget. Our TripleSafe™ Complete Sump Pump System was installed to rid the area of the pressure and stop any future flooding. Two IceGuard® Discharge Line Systems were also installed on the discharge line to prevent the possibility of future freezing of the lines. The church is now waterproofed so that the customer does not have to worry about flooding or water damage in the future. 

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

Full-Service Foundation & Basement Repair in Cobourg, ON

Even our plumber was impressed with the repairs. Would highly recommend...
Happy Customers Surrounding Cobourg, ON
Work Requests

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Reviews From Cobourg
Testimonials From Cobourg
Lucio, Stefano, and Dymytro completed our TripleSafe System yesterday and we are very pleased with the installation.
Testimonial by Paul K. from Cobourg, ON

Basement Waterproofing Experts Serving Cobourg, 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 Cobourg 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 Cobourg 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 Cobourg 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 Cobourg
This customer wanted to have an Egress Window installed. The customer was concerned that if an emergency were to arise, their children would need an...
After buying their first home the customer found that the basement was extremely damp. The smallest amount of rain water would pool around the...
The customer’s complaint was that the basement was terribly humid, the meter that has been purchased to measure the humidity said that there...
Job Stories From Cobourg, ON
Basement Waterproofing and Mould Removal in Cobourg, Ontario

Every homeowner is afraid of mould. It’s unsightly, smells, and can have terrible health effects. In many cases it can simply be scrubbed away, and the issue is gone, but sometimes mould can take over and cause damage to your beloved space. Caused by moisture, when you find mould in your home, you’re usually dealing with not only a mould problem, but a water seepage problem too. 

Katy, a homeowner in Cobourg, Ontario, owns a gorgeous bungalow with a finished basement. She discovered that water was entering the front wall of her home in three different spots, causing mould to grow and build up. She was concerned about potential health issues caused by the mould and it was difficult to use the space. With a bungalow only consisting of two floors, she was unable to use almost half of the space in her home, causing frustration and cramping on the main level. A fun space to entertain and shoot some pool was inaccessible and the problem was only getting worse. 

Katy reached out to Clarke Basement Systems for a permanent solution for her mould madness.  A team was sent out to remove the mould, along with 83 feet of drywall and insulation. System Design Specialist Ryan Hanlon designed a waterproofing system and Foreman David Jackson got busy installing it. The system consisted of CleanSpace® Vapor Barrier, WaterGuard® and a TripleSafe™ Sump Pump. Together these products prevent moisture from entering the space and send any water that does enter into a drain where it is pumped out. Since most Ontario basements deal with high humidity on a regular basis, we also installed an Aprilaire De-Humidifier to ensure the basement stays dry and safe. 

Since the repairs have been done Katy has been ecstatic that she can finally use her basement again. She was very pleased with how the work turned out and has played many games of pool since its completion! She has since refinished her basement too and can finally entertain guests in a dry and safe area.

Basement Waterproofing and Mould Removal in Cobourg, Ontario - Photo 1Basement Waterproofing and Mould Removal in Cobourg, Ontario - Photo 2Basement Waterproofing and Mould Removal in Cobourg, Ontario - Photo 3
Crack in Foundation in Cobourg, ON

Our customer living in Cobourg, Ontario, contacted our company regarding a crack in their basement foundation. They wanted to finish their basement, but the issue needed to be fixed first. They needed a quick and budget-friendly solution.

Steve Matthews, System Design Specialist, assessed the crack and provided a permeant solution. Mark Dougherty, a Foreman, installed:

  • a FlexiSpan® Foundation Crack Repair System

The FlexiSpan® System is a polyurethane polymer that will never dry out or crack. This system is perfect because it bends with the natural movement of the foundation.

Our customer was thrilled to have a permeant solution for their cracked foundation. They are now able to finish their basement with no worry of future water damage.

Work Requests From Cobourg, ON
Project Location: Cobourg, ON
Water in basement
Project Location: Cobourg, ON
Wet basement,
Project Location: Cobourg, ON
Basement has flooded a couple of times in the past two years. Primary locations seem to be the joint between the original house and addition and the floor slab cutout for the shower drain.
Project Location: Cobourg, ON
Leaking in basement.
Project Location: Cobourg, ON
There is a crack in the cinder block foundation where water is entering the basement when it rains.
Project Location: Cobourg, ON
Interior basement block wall that appears structural has cracked and requires correction. Please use email for contact as this would be the fastest method of contact for us.
Project Location: Cobourg, ON
Wanted to get the crawl space looked at to see how much/what would need to be done to level our house.
Project Location: Cobourg, ON
Basement waterproof and structural fix for one of the wall
Project Location: Cobourg, ON
Water in basement
Project Location: Cobourg, ON
I believe that water is seeping in through perimeter of home. Would like to schedule an estimate to waterproof foundation/assess the situation.
Project Location: Cobourg, ON
We had a very small leak in our basement laundry room on Feb 21 but it's been dry since. It looks as though there may have been a leak once or twice previously behind the insulation and vapour barrier. We are seeking a quote on what it would take to repair the leak as well as a possible time-frame. Thank you in advance.
Project Location: Cobourg, ON
The sump pump set-up I have presently is located in a crawl space with a liner of 24" deep x 16" wide with a 1/3 hp pump at the bottom of the hole and a battery back up pump located at the mid-way part of the sump hole. There is a 5 ft distance from the top of the sump hole to the exit opening to the tube leading to the outside of the house. During the summer the sump water is pumped out a 1 1/4" hose buried about one foot below ground, and during winter I use a different 1 1/4" hose with a heating cable which are wrapped in insulation tubing laying above ground. Both pumps are getting old and I would like to replace them with your Smart Sump system. With the recent winter rain storm our sump hole was filling every 90 secs for about 6 hours. Please give me a call so we can discuss. Thanks
Project Location: Cobourg, ON
I would like a free estimate to repair a veritcal basement poured concrete crack which is leaking water into my basement. House is 31 years old and this is the 1st crack in the foundation we've found. Looking for an epoxy injection type of repair from inside the basement if possible.
Project Location: Cobourg, ON
Took up old laminate flooring in the newer part of our basement and found a small amount of water. Left the area clear for the last week and it has stayed dry. Also another spot on the floor at the moment is damp.
Project Location: Cobourg, ON
Bought old small house in downtown Cobourg with leaky basement, not sure about grading, there are some cracks, etc
Project Location: Cobourg, ON
I'd like a quote on some minor outside cracks in the foundation before they get bad.
Project Location: Cobourg, ON
Hi I have water in basement in 2 areas & would like someone to take a look at Thank you Karalee
Project Location: Cobourg, ON
I am a Realtor requiring a written estimate asap on underpinning beneath an addition. ( 12 ft x 14ft ) This is time sensitive. It is a condition in the offer.
Project Location: Cobourg, ON
We need vapour barrier in our crawl space
Project Location: Cobourg, ON
Crawl space clean up and restoration
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