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 Thornton
Frustrated Homeowner Ready to Give Up Before Calling Us in Thornton, Ontario

Frustrated Homeowner Ready to Give Up Before Calling Us in Thornton, Ontario

Before After
Frustrated Homeowner Ready to Give Up Before Calling Us in Thornton, Ontario Frustrated Homeowner Ready to Give Up Before Calling Us in Thornton, Ontario

Walking down to your beautifully finished basement and finding water all over the floor can leave you frustrated.

A customer in Thornton, Ontario, called Clarke Basement Systems after dealing with water in her basement. Every time it rained, or there was a thaw, her floor was flooded, and she was almost to the point of finding a new house.

System Design Specialist Robert Langton met with the homeowner and explained how we could waterproof her basement. She was happy to hear she could stay in her current home, and a date was set for the installation. 

Foreman Dave Jackson and his crew installed our WaterGuard® Drain System around the basement perimeter. This drain sits directly on the floor/wall joint and catches any water coming up from the ground. We encapsulated the walls with CleanSpace® Vapour Barrier to stop moisture seepage and feed water down to the drain. This entire system feeds to a TripleSafe® Sump Pump, where water is expelled out of the home through an IceGuard® Discharge Line. Our TripleSafe® System comes with an UltraSump® Battery Backup, and our IceGuard® System keeps water flowing even during freezing temperatures. Lastly, we controlled the air quality with an Aprilaire® Dehumidifier.

The customer is delighted that she feels comfortable in her own home again. She’s looking forward to many more years and plans on refinishing her basement.

From Cottage Repair to Home Sump Pump in Thornton, Ontario

From Cottage Repair to Home Sump Pump in Thornton, Ontario

Before After
From Cottage Repair to Home Sump Pump in Thornton, Ontario From Cottage Repair to Home Sump Pump in Thornton, Ontario

Sometimes, one thing really does lead to another, especially for a customer in Thornton, Ontario.

Andrew had used us for waterproofing his cottage, and when he was looking for some proactive peace of mind for his home, he decided to bring us back. He reached out to his System Design Specialist, Rob Malcomson, and he inspected the house.

Rob recommended a sump pump to direct water out of the home and a freeze-proof discharge line to get it there. He already had a sump pump, but it was old and failing, and he feared the worst with the spring thaw right around the corner.

Foreman Lucio Flores and his crew removed the old sump pump and replaced it with our Triplesafe® Sump Pump. This three-pump system has an UltraSump® Battery Backup, keeping water moving with or without power. In addition, we installed an IceGuard® Discharge Line through the rear foundation wall, built with an overflow to prevent any backups caused by a freezing line.

Andrew can breathe a sigh of relief, knowing his basement is protected from the spring thaw. He knows he made the right choice bringing us back for his home and was happy to see Rob again.

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

Thornton, ON Basement Waterproofing & Foundation Repair Experts

Done as per the estimate by friendly knowledgeable staff.  ...
Happy Customers Surrounding Thornton, ON
Work Requests

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Basement Waterproofing Experts Serving Thornton, 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 Thornton 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 Thornton 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 Thornton 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.
Work Requests From Thornton, ON
Project Location: Thornton, ON
We found water and mold in a wall in our basement.
Project Location: Thornton, ON
Have some cracks in brick mortar that I have been monitoring and they are getting wider, also noticed some cracks in brick mortar that I didn't see before. There are a couple of cracks in the foundation on the garage side of the house. Just want to get it dealt with before it gets any worse. Thanks for your time.
Project Location: Thornton, ON
We have a wall in our basement that leaks
Project Location: Thornton, ON
Have a crack in my foundation. water is getting trough. Ihave the foundation exposed from the inside

our service area

Clarke Basement Systems service area