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

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Reviews From Alliston
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

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

Respected Basement Waterproofing & Concrete Repair Contractor Serving Alliston

Luke on installation was a real pleasure to deal with...
Happy Customers Surrounding Alliston, ON
Work Requests

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Basement Waterproofing Experts Serving Alliston, 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 Alliston 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 Alliston 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 Alliston 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 Alliston, ON
Creepy Crawl Space Confrontation in Alliston, ON

Crystal K. noticed some groundwater and unpleasant odours in her crawl space. No longer wanting to deal with these unfortunate circumstances, especially with the Spring Thaw around the corner, she called Clarke Basement Systems for the best permanent solution.

One of our System Design Specialists, Robert Langton, devised a solution including the use of our patented WaterGuard® Below-Floor Drain System, CleanSpace® Wall Vapour Barrier System, SuperSump® Premier Sump Pump System, ThermalDry® R20 Wall Insulation and Drainage matting. Together, these systems were able to successfully encapsulate the space, which in turn sealed the crawl space from the earth’s moisture leading to an elimination of groundwater, bad odours and potential energy loss.

Crystal no longer has to settle for a musty, wet crawl space nor how it negatively impacts her home. Clarke Basement Systems is pleased to have been able to assist this Alliston, ON homeowner with all of her waterproofing needs.

Creepy Crawl Space Confrontation in Alliston, ON - Photo 1Creepy Crawl Space Confrontation in Alliston, ON - Photo 2Creepy Crawl Space Confrontation in Alliston, ON - Photo 3
Work Requests From Alliston, ON
Project Location: Alliston, ON
Looks like a need a crawl space encapsulation. What is the minimum space from dirt to bottom wood you can work with?
Project Location: Alliston, ON
I have I basement crack aproximately 6ft long that does leak and 4 more that are 2 to 3 ft long, no leaks yet. it is a poured foundation aproximately 4 years old. Look forward to hearing from you.
Project Location: Alliston, ON
Two sections of the basement of my 130 year old home are dirt. Interested in the cost of encapsulating the areas.
Project Location: Alliston, ON
One room in basement has musty smell so I ripped out the almost 10 year old carpet, pad beneath and wiped cement floor with bleach solution. Some parts of cement floor were "powdery" and reddish brown so I scraped that powder off. Smell us still there so wondering how to get rid of it and also what the powder is. Thanks! Steph
Project Location: Alliston, ON
Crack in the basement foundation. Water coming in after rainfall.
Project Location: Alliston, ON
Leak in the foundation under the basement window.
Project Location: Alliston, ON
Leaking cove joint in basement
Project Location: Alliston, ON
100 year old house in Alliston. Stone foundation with cracks. House might have to be jacked up.
Project Location: Alliston, ON
Hi In preparation of finishing our basement we need to level our basement floor. However some of the issues seem to be just the slope. Not sure if your product is what I need to level this basement. Would be interested in talking with someone and possibly receiving a quote. Thx
Project Location: Alliston, ON
West foundation wall in basement leaks intermittently from various locations, including rebar holes and where wall and footing meet and others.
Project Location: Alliston, ON
Small leak in foundation
Project Location: Alliston, ON
My basement is leaking ever since the ice storm. It hasnt stopped. It is leaking where the wall meets the floor
Project Location: Alliston, ON
We have three issues that need to be addressed in our garage: (1) the garage floor needs to be lifted to bring grading to code, (2) the garage floor has sunken, (3) foundation repair from water slowly flowing into garage.
Project Location: Alliston, ON
Crack in foundation/ brick motar joints has resulted in water in basement looking for an estimate to repair.
Project Location: Alliston, ON
We have a gap letting in water where the poured concrete window ledge meets the block foundations.
Project Location: Alliston, ON
Recently bought this house (July 6th) and have had leaking in the basement. It seems to be coming from rusted metal posts in concrete foundation and other cracks.
Project Location: Alliston, ON
Water coming in basement finished area Looking for a price
Project Location: Alliston, ON
Water coming up through basement floor when freeze thaw happens
Project Location: Alliston, ON
I needs repair at a house that I just sold in Alliston crack in the foundation
Project Location: Alliston, ON
Water seeping in were foundation and floor meet.
Serving the following Alliston, ON postal codes
L9R 0A1, L9R 0A2, L9R 0A3, L9R 0A4, L9R 0A5, L9R 0A6, L9R 0A7, L9R 0A8, L9R 0A9, L9R 0B1, L9R 0B2, L9R 0B3, L9R 0B4, L9R 0B5, L9R 0B6, L9R 0B7, L9R 0B8, L9R 0B9, L9R 0C1, L9R 0C2, L9R 0C3, L9R 0C4, L9R 0C5, L9R 0C6, L9R 0C7, L9R 0C8, L9R 0C9, L9R 0E1, L9R 0E2, L9R 0E4, L9R 0E5, L9R 0E6, L9R 0E7, L9R 0E8, L9R 0E9, L9R 0G1, L9R 0G2, L9R 0G3, L9R 0G4, L9R 0G5, L9R 0G6, L9R 0G7, L9R 0G8, L9R 0G9, L9R 0H1, L9R 0H2, L9R 0H3, L9R 0H4, L9R 0H5, L9R 0H6, L9R 0H7, L9R 0H8, L9R 0H9, L9R 0J1, L9R 0J3, L9R 0J4, L9R 0J5, L9R 0J6, L9R 0J7, L9R 0J8, L9R 0J9, L9R 0K1, L9R 0K2, L9R 0K3, L9R 0K4, L9R 0K5, L9R 0K6, L9R 0K7, L9R 0K8, L9R 0K9, L9R 0L4, L9R 0L5, L9R 0L7, L9R 0L8, L9R 0L9, L9R 0M2, L9R 0M3, L9R 0M6, L9R 0M7, L9R 0M8, L9R 0M9, L9R 0N1, L9R 0N2, L9R 0N3, L9R 0N4, L9R 0N5, L9R 0N6, L9R 0N7, L9R 0N8, L9R 0N9, L9R 0P1, L9R 0P2, L9R 0P3, L9R 0P4, L9R 0P5, L9R 0P6, L9R 0P7, L9R 0P8, L9R 0P9, L9R 1A1, L9R 1A2, L9R 1A4, L9R 1A5, L9R 1A6, L9R 1A7, L9R 1A8, L9R 1A9, L9R 1B1, L9R 1B2, L9R 1B3, L9R 1B4, L9R 1B5, L9R 1B6, L9R 1B7

our service area

Clarke Basement Systems service area