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 East Gwillimbury
Crawlspace Encapsulation in East Gwillimbury, ON

Crawlspace Encapsulation in East Gwillimbury, ON

Before After
Crawlspace Encapsulation in East Gwillimbury, ON Crawlspace Encapsulation in East Gwillimbury, ON

From dirty and musty to healthy and clean, we turned this East Gwillimbury, ON homeowner's crawlspace into something out of a dream!

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

Innovative Basement & Concrete Repair Contractor in East Gwillimbury, ON

Happy Customers Surrounding East Gwillimbury, ON
Work Requests

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Basement Waterproofing Experts Serving East Gwillimbury, 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 East Gwillimbury 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 East Gwillimbury 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 East Gwillimbury 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.
Job Stories From East Gwillimbury, ON
Wall Crack in East Gwillimbury, Ontario

If left unchecked, a leaking crack in your foundation wall can cause significant damage. Luckily, for our customer in East Gwillimbury, Ontario, they found it just in time. Having a finished basement and finding a leak is not ideal for any homeowner.


Chris Luke, System Design Specialist, met with the homeowners to go over possible solutions for their water seepage issue. Chris recommended an excavation around the perimeter of the cracked area and have a liquid rubber and drainage matting installed. Foreman, Shane, and his crew began the processes by digging out the dirt and working together to install the waterproofing system.


Our customer is relieved to have their basement protected!  No matter what concerns our customers have, our team will always go above and beyond to service our customers!

Work Requests From East Gwillimbury, ON
Project Location: East Gwillimbury, ON
We purchased the house last September and got basement leaking problem since March 2021. It has caused the wet basement and moldy smell.
Project Location: East Gwillimbury, ON
Have a crawl space that we are looking to get a quote to have vapor barrier installed on the sand/dirt floor.
Project Location: East Gwillimbury, ON
We have water coming into our basement from under our back door.
Project Location: East Gwillimbury, ON
Water seepage when it rains, in several locations in the basement. Challenges with management of seepage.
Project Location: East Gwillimbury, ON
My wife and I just moved into a bungalow with a crawl space. The main part of the house have somewhat bouncy floors. The addition portion has a large sag in the floor. Upon investigating, it appears that the sag was created when they put in a hatch door to the crawl space. I would like a quote as to $$ to strengthen the floors in the main part of the house and repair the sag in the addition. Thank you.
Serving the following East Gwillimbury, ON postal codes
L9N 0A2, L9N 0A3, L9N 0A4, L9N 0A5, L9N 0A6, L9N 0A7, L9N 0A8, L9N 0A9, L9N 0B1, L9N 0B2, L9N 0B3, L9N 0B4, L9N 0B5, L9N 0B6, L9N 0B7, L9N 0B8, L9N 0B9, L9N 0C1, L9N 0C2, L9N 0C3, L9N 0C4, L9N 0C6, L9N 0C7, L9N 0C9, L9N 0E1, L9N 0E2, L9N 0E3, L9N 0E6, L9N 0E7, L9N 0G3, L9N 0G4, L9N 0G5, L9N 0G6, L9N 0G7, L9N 0G8, L9N 0G9, L9N 0H1, L9N 0H2, L9N 0H3, L9N 0H4, L9N 0H5, L9N 0H6, L9N 0H7, L9N 0H8, L9N 0H9, L9N 0J1, L9N 0J3, L9N 0J4, L9N 0J5, L9N 0J6, L9N 0J7, L9N 0J8, L9N 0J9, L9N 0K1, L9N 0K2, L9N 0K4, L9N 0K5, L9N 0K6, L9N 0K7, L9N 0K8, L9N 0K9, L9N 0L2, L9N 0L3, L9N 0L4, L9N 0L5, L9N 0L6, L9N 0L7, L9N 0L8, L9N 0L9, L9N 0M1, L9N 0M2, L9N 0M3, L9N 0M4, L9N 0M5, L9N 0M6, L9N 0M7, L9N 0M8, L9N 0M9, L9N 0N1, L9N 0N5, L9N 1B1

our service area

Clarke Basement Systems service area