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Reviews From East Gwillimbury
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 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!

Basement Smell Fixed in East Gwillimbury, ON

Basement Smell Fixed in East Gwillimbury, ON

Before After
Basement Smell Fixed in East Gwillimbury, ON Basement Smell Fixed in East Gwillimbury, ON

Clarke Basement Systems received a call from a stressed customer when they discovered a nasty odour coming from the back area of their basement. Accompanying the smell was some water seepage that appeared to be trickling down the walls. System Design Specialist Ben Wallis headed to East Gwillimbury to inspect the home and provided an expert solution.


        We installed a WaterGuard® sub-floor drainage system and our CleanSpace® wall membrane to guide water toward the sump system. The main reason for the water leakage was the broken sump pump they had. So, we replaced the old sump with our patented SuperSump® system. This way, the two will collect the water and then pump to the exterior discharge line by the SuperSump®. Lastly, we installed an IceGuard® on the discharge line to eliminate any blockages caused by debris or freezing.

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

Innovative Basement Waterproofing & Crawl Space Encapsulation 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 from under your house. 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
Case Studies From East Gwillimbury
A customer in East Gwillimbury was losing sleep over a leak in their basement that was letting quite a bit of water through the foundation walls...
Job Stories From East Gwillimbury, ON
Out with the Old, in with the new SuperSump® System in East Gwillimbury

Homeowners in East Gwillimbury had water seepage due to their old broken sump that wasn’t doing the job anymore. They called Clarke Basement Systems to see about replacing the sump and getting other water seepage solutions. Using our SuperSump®, the water will be effectively pumped out into the discharge line and out of the home. Additionally, we installed our CleanSpace® wall membrane and WaterGuard® sub-floor drainage system. Altogether, the three will work together to keep the basement waterproofed and give peace of mind to the homeowners!

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
I discovered a section of floor in one of our basement rooms where the carpet is soaked through. There is no corresponding sign of water or leakage on the ceiling.
Project Location: East Gwillimbury, ON
Cracks in basement floor
Project Location: East Gwillimbury, ON
Hi there. I have a leak in my basement with quite a bit of water coming through the foundation walls. If somebody could please get back to me so that I can get a quote as soon as possible to have this repaired. Thank you
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.
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