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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

Egress Windows

Before and After Pictures from Markham
Water Leakage Caused Lost Space, Markham, ON

Water Leakage Caused Lost Space, Markham, ON

Before After
Water Leakage Caused Lost Space, Markham, ON Water Leakage Caused Lost Space, Markham, ON

A home in Markham, Ontario had a water leaking problem at the side wall. There was a crack, form ties and floor wall joint seepage in the poured concrete wall. The basement was finished but the floor was constantly wet so the homeowner and their grand kids could not use the space.

The customer had used Clarke Basement Systems previously for other work and knew we could help with the water issues. Chris Luke was the design specialist that helped come up with a solution and answered any questions the customer had. Lucio the installation specialist and his team came in and installed a Waterguard around the perimeter of the leaking wall. Thermal Dry Wall Membrane was installed to stop leakage and moisture on the walls and direct it to the drain. A SuperSump with Iceguard was installed to avoid flooding and keep the lines durable during the cold seasons. 

With a fully waterproofed basement it can be put back together without having to worry about wet floor, leaking form ties or cracks that leak. They have their space back and they feel confident to let their grand kids play in the area!

Solution to a Leaky Basement in Markham, ON

Solution to a Leaky Basement in Markham, ON

Before After
Solution to a Leaky Basement in Markham, ON Solution to a Leaky Basement in Markham, ON

A home in Markham, Ontario, had Water seeping up from the floor and wall and the block foundation wall was full of water. This was a problem because the prospective home buyers were not interested in buying a home with a leaking basement.

The homeowner needed to sell the home to move away for a job. She called Clarke Basement Systems and spoke to Ben Wallis, who told her everything that would be done to fix the basement. Jose Martinez and the team installed WaterGuard around the perimeter of the basement, ThermalDry wall membrane on the walls and a SuperSump. Block wall voids were purged so the wall did not retain water anymore. The ThermalDry wall membrane directs any moisture into the WaterGuard and it is then pushed into the SuperSump. The customer was satisfied because she was now able to obtain a home inspection report indicating the problem had been solved with a fully-transferable warranty. 

 

Water and Mold in a Finished Basement in Markham, ON

Water and Mold in a Finished Basement in Markham, ON

Before After
Water and Mold in a Finished Basement in Markham, ON Water and Mold in a Finished Basement in Markham, ON

This 1970's home located in central Markham, ON had a fully finished basement, the old block foundation had some nasty issues that were lurking behind the drywall. It started off with the customer noticing a small patch of damp drywall, a few days later a small puddle appeared on the floor along the same wall but in a different location it was then they realized they needed to call in the professionals. The homeowners were puzzled, never having a leak in the basement before and not knowing what was happening. We sent out our local inspector to take a look and see if he could help to source the leak and provide a solution. The homeowners decided to start removing drywall in the area that was wet to prevent mold growth. Our inspector showed up and the bottom of the drywall was already removed, he quickly noticed that the bottom few rows of block were very wet, and some even had mold growth already. With a solution in mind he explained to the homeowner what was happening, why it was happening and what we could do to fix this issue. It didn't take long for the work to get started and when it did it was a matter of hours before the issue was dealt with. We went in removed the bottom few feet of drywall and studding, installed the WaterGuard interior trench drainage along the footings and put up ThermalDry moisture barrier wall membrane to catch and control the water. Now that the water issue is dealt with the homeowner has re-finished the bottom few feet of drywall and is now back to being the recreation room for the family to enjoy.

Company Awards
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]
Readers Choice Award Winner 2015
The Community of Markham has chosen our business as the winner of the annual Markham Economist & Sun Reader’s Choice... [Read more]
#32 DEALER  FOR TOTAL SALES 2017-2018
Clarke Basement Systems received #32 Dealer for Total Sales 2017-2018 out of hundreds of dealers across North America from Contractor... [Read more]
More Awards

Your Trusted Markham, ON Basement Waterproofing & Foundation Repair Contractor

Happy Customers Surrounding Markham, ON
Testimonials
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Reviews From Markham
Testimonials From Markham
After being satisfied with previous waterproofing services performed by Clarke Basement Systems, Jim from Markham, Ontario decided to call us when he...
Testimonial by Jim from Markham, ON
It was a very good experience. Starting from the estimate - the estimator came in and was very professional. He gave me a good estimate and an approximate...
Testimonial by Nadeen from Markham, ON
A great job with the installation
Testimonial by S. M. from Markham, ON

Professional Basement Waterproofing and Sump Pumps in Markham, ON

At Clarke Basement Systems we put customer service first and are proud to serve our area. Our team of trained technicians use only high quality materials from the best manufacturers in the business to ensure that you get only the best results. We want to find the solution that will work best for you!

If you have problems with mold or water damage in your basement, then it's time to get it checked by professionals like the folks at Clarke Basement Systems. Some of the major warning signs of a waterproofing problem are:

  • Wet or damp basement floor
  • Leaking or damp basement walls
  • Pooling or standing water
  • Crystaline deposit on concrete surfaces
  • Musty odors
  • Condensation
  • Sump pump issues leaky basement windows

Our excellent products like vapor barriers, dehumidifiers, and drainage systems will keep your basement dry and healthy. Need help removing water and keeping the area dry? Then our TripleSafe sump pump is the thing for you! With a primary pump, a secondary pump, and a third, battery operated backup pump, you can always have the peace of mind you deserve knowing that you home is well-protected. 

Expert Foundation Repairs and Concrete Repair in Markham, ON

Animation of wall anchors in Markham, ON

For problems with bowing, leaning walls or sinking, settling foundations, Clarke Basement Systems is your local expert for the job! We offer a variety of excellent products like wall anchors and I-Beam wall braces to correct bowing, leaning walls. Additionally, we offer foundation piers, helical piers, and slab piers to correct your uneven, sloped, or sinking floors. Other signs of a foundation problem are: 

  • Uneven or sloping floors
  • Cracks in the interior or exterior wall
  • Sagging floors over a crawl space
  • Hard to open windows and doors
  • Tilting chimneys
  • Street creep

Need a solution to cracked, uneven concrete in your home or on sidewalks or patios? Then look no further than our concrete leveling, concrete crack repair, and concrete sealing services!

With the PolyLevel Concrete Lifting System from Clarke Basement Systems, a polyurethane foam gets injected under the concrete slab which raises it to the appropriate height so that it's even with the rest of the concrete around it, eliminating it as a safety hazard. 

In addition, we also provide durable cracked concrete repair with NexusPro. NexusPro is a flexible concrete sealant that repairs concrete cracks and joints. Since NexusPro resists UV rays, temperature fluctuations, extreme weather conditions, and more, your concrete repair will be long-lasting!

After utilizing all of our ultra-durable concrete repair solutions, try SealantPro, a tough concrete sealant that extends the life your slabs by 3 to 5 times overall in just one coat. SealantPro bonds with your slabs on a molecular level to guard against oil, gasoline, liquids, and debris, assuring your concrete and your home looks great for a lifetime!

Dependable Crawl Space and Mold Repairs in Markham, ON

Crawl space with vapor barrier installed in Markham, ON

One of the most neglected and unassuming areas of the home is the crawl space. When left unchecked, a crawl space can become a breeding ground for mold, mildew, and even small animals and other pests, not to mention cause other problems for your home like affecting air quality or foundations. By installing vapor barriers, thermal insulation and dehumidifiers, you can turn you dirty, unsafe crawl space into a healthy, energy-efficient space. 

Signs of a crawl space problem:

  • Sagging floors
  • Condensation
  • Mold
  • Wood rot
  • Foundation cracks

Having problems with musty smells and mold in your basement or crawl space? We have the time-tested products and methods to improve the air quality of your home as well as find solutions for problems such as beams sagging due to wood rot. 

Clarke Basement Systems has the tools and expertise to get your project done the right way the first time. Our friendly, knowledgeable staff and certified technicians use only high quality products and are ready to help you find a solution that will work for you and your home. Call us today for a free estimate!

 

Get a Free Estimate!

Case Studies From Markham
Updated
A home in Markham, Ontario had water seeping into the basement. The water was flooding in from the window areas of the basement. The home had older...
Patterned
A home in Markham, Ontario, had a patterned concrete pool deck that had been sinking down a little more each year. This was happening for several...
Full
A home in Udora, Ontario had water coming in from the perimeter of the basement. This was caused by exterior foundation waterproofing that had...
Job Stories From Markham, ON
Sunken Concrete Along a Home in Markham, ON

Our customer in Markham, Ontario, had a concern with a concrete slab located on the right side of their home. The slab had sunken near the house, directing rainwater towards the foundation. Our customer's concern was that the pooling water would lead to further damages. Also, on top of the slab sat a pool heater and a pump. Since the heater was sitting at an angle, the flame was not aiming where it was supposed to, resulting in damaging the heater.

 

Our customer knew to call Canadian Concrete Leveling, after previously having a job completed by our company. An appointment was then set up with Project Lead, Paul Mendell. Paul advised our customer about all the benefits Polyurethane would do to fix their issue. Kyle and Steve, injected our expanding Polyurethane under the concrete.

 

How does Polyurethane work?

Polyurethane fills the voids underneath the slab, then lifts and stabilizes the concrete back to the original height.

 

Our customer was pleased with the job. The slab is now stabilized and ready for a new pool heater. Water is no longer directed towards the home giving our customer peace of mind that no future damage will occur.

Concrete Walkway Repair in Markham, ON

Not many people may think about the struggles someone may have getting around on their own. Our customer in Markham, Ontario, had a mobility disability and struggled with using the front walkway of their home. The concrete slabs had settled creating trip hazards and forcing water to pool near the garage causing water damage. The primary concern was that the uneven concrete could cause serious injuries. Also, they were looking to sell the house in the near future and wanted it fixed.

 

After reaching out to Canadian Concrete Leveling an appointment was set up with System Design Specialist, Ron Monk. Ron recommended installing Polyurethane and NexusPro™ Sealant. The Polyurethane allows our team to lift and level settled concrete, the Polyurethane pushes down on the loose soils underneath and raises the slab eliminating trip hazards. The NexusPro™ Sealant is injected along the expanded joints and cracks to seal the concrete preventing water from seeping through.

 

Our customer is happy that the concrete is leveled and that our team has eliminated all the tripping hazards. The walkway is now safe and the home is ready to sell shortly.

Crack Forming From Window in Markham, ON

A customer in Markham, Ontario, had a crack in their basement foundation. It began to form from the corner of the window and had been leaking in water leading to pooling on the basement floor.

 

Chris Luke, System Design Specialist, advised our customer on what product would best suit this problem. Mark Dougherty, a Foreman, installed:

 

  • a FlexiSpan® Crack Repair System

 

The polyurethane sealant never dries out or cracks and adapts with the natural movement of the foundation wall. This system will seal it permanently and includes a 25-year warranty that is transferrable to new homeowners if put on the market.

 

Our customer was happy with the repair of the foundation and was thrilled about the warranty.

Water Leaking in Markham, ON

A customer living in Markham, Ontario had contacted us because water had been running in through the east wall of the finished basement ruining their new carpet and baseboards. The customer was worried the rest of the space would be damaged by the water which would then affect the value of the home, and the customer’s peace of mind.

 After the customer spoke with Ben Wallis, System Design Specialist, they decided to install a proper sump system, and a perimeter drainage system for the east wall of the home inside the basement. Adam Paulikot, Foreman, and his crew began by removing part of the floor perimeter as well as the drywall along the east wall. They installed a system with products that work together to manage the water coming into the basement and redirecting it into the sump system:

  • SuperSump® Premier Sump Pump System
  • WaterGuard® Sub-Floor Drainage System
  • IceGuard® Discharge Line

 A ThermalDry® Wall Membrane was installed to funnel moisture or groundwater into the WaterGuard® system installed below the floor. The WellDuct® Window Well Drain was also installed. It directs water from the window well into the WaterGuard®. After the installation, the floor was concreted flush with the original level of the floor.

 Our customer was very happy the new system was permanently taking care of the groundwater seepage issue in their basement. Our customer now had peace of mind that the house was safe and waterproofed.

Window Well Installation Stops Seepage and Adds More Light, Markham, ON

A home in Markahm, Ontario, had a problem with the side window well. The window well was not draining, causing water to pool and enter through the window. This was causing staining on the wall and floor and the basement to be wet. 

 

The homeowner called Clarke Basement Systems and talked to Rob Malcomson, who explained the process of the job. Don Clarke and the team came in and installed our SunHouse window well. They are enclosed window wells with a cover to stop water from entering the well. New drainage was installed to Weepers on the exterior of home, ensuring any water entry will drain properly. The  customer is happy because there is no more water entering through window and as a bonus, more light is now being bounced into the basement space.

Window Well Installation Stops Seepage and Adds More Light, Markham, ON - Photo 1Window Well Installation Stops Seepage and Adds More Light, Markham, ON - Photo 2Window Well Installation Stops Seepage and Adds More Light, Markham, ON - Photo 3
Wet Cold Room Caused Smelly Finished Basement, Markham, ON

A home in Markham, Ontario, had a large 32-foot-wide cold room that no longer could be used for storage due to groundwater seeping. Further inspection found the water had traveled beyond the cold room and into their carpeted recreation room that was open to the upper levels of their home.  The homeowner feared their finished basement space would be damaged, and needed the peace of mind their basement would be dry while they were away from home for extended periods. Because of their upcoming vacation, it was important to find a reliable system they could trust...fast!

The customer was pleased with a previous FlexiSpan crack repair we'd completed years prior, and knew they could trust Clarke Basement Systems to fix their wet basement issues. They spoke to our sales rep; Colin Clayden who explained everything to them in detail and came up with the best solution for their wet basement. The foreman; Dave Jackson and the team came in and installed a WaterGuard waterproofing system around the perimeter of the cold room to capture water entering from the footing a floor/wall joint. They put CleanSpace anti-microbial wall membrane to capture water and create a vapor barrier between the basement and damp basement walls. A TripleSafe Sump Pump System was added to provide reliable 24/7 protection against basement flooding for the worst case scenario, even if the power were to go out. IceGuard was installed to prevent discharge line freezing when the temperatures swing between day and night, and season to season. Lastly, WellDuct to efficiently route water to the TripleSafe when the window well drainage is not able to keep up. The basement no longer has a musty, moldy smell to there basement and will be protected from any water leakage. The customer can rest easy and travel away from home confidently knowing they will return to a dry cold room any month of the year.

 

 

Wet Cold Room Caused Smelly Finished Basement, Markham, ON - Photo 1Wet Cold Room Caused Smelly Finished Basement, Markham, ON - Photo 2Wet Cold Room Caused Smelly Finished Basement, Markham, ON - Photo 3Wet Cold Room Caused Smelly Finished Basement, Markham, ON - Photo 4Wet Cold Room Caused Smelly Finished Basement, Markham, ON - Photo 5Wet Cold Room Caused Smelly Finished Basement, Markham, ON - Photo 6Wet Cold Room Caused Smelly Finished Basement, Markham, ON - Photo 7Wet Cold Room Caused Smelly Finished Basement, Markham, ON - Photo 8
Water Leakage Caused Lost Space, Markham, ON

A home in Markham, Ontario had a water leaking problem at the side wall of the 40 year old home. There was a crack, form ties and floor wall joint seepage in the poured concrete wall. The basement was finished but the floor was constantly wet so the homeowner and their grand kids could not use the space.

The customer had used Clarke Basement Systems previously for other work and knew we could help with the water issues. Chris Luke was the design specialist that helped come up with a solution and answered any questions the customer had. Lucio the installation specialist and his team came in and installed a Waterguard around the perimeter of the leaking wall. Thermal Dry Wall Membrane was installed to stop leakage and moisture on the walls and direct it to the drain. A SuperSump with Iceguard was installed to avoid flooding and keep the lines durable during the cold seasons. 

With a fully waterproofed basement it can be put back together without having to worry about wet floor, leaking form ties or cracks that leak. They have their space back and they feel confident to let their grand kids play in the area!

Water Leakage Caused Lost Space, Markham, ON - Photo 1
Constant Water Leaks Repaired in Markham, ON Basement

After months of constant leaking in his basement, Markham, ON homeowner Rey C. decided enough was enough and began looking for waterproofing companies to service his basement.  Remembering a company from a home show he visited this spring, Rey decided to contact them for an estimate.

 

Rey contacted the professionals at Clarke Basement Systems and soon after, Clarke sent out Ron Monk to meet with Rey at his home and discuss solutions.  After evaluating the basement and the wall cracks, Ron discussed with Rey that the best course of action would be to install FlexiSpan.  Ron explained to Rey that FlexiSpan was a highly recommended wall sealant.  FlexiSpan is preferred over traditional sealants such as hydraulic cement because of its properties to not dry up or crack over time.  Additionally, FlexiSpan is designed to stretch and move with the naturally shifting motions of the walls to ensure the most protection out of the product.  After explaining the process that would be done to install the product, Ron called in Fitz Wilks, a primary foreman for Clarke Basement Systems to install the product.

 

Fitz completed the installation process over a day’s time and now Rey’s basement is safer than ever!  Thanks to the professionals at Clarke Basement Systems, FlexiSpan will effectively waterproof the home for years and years to come!

Basement Water Intrusion Remedied in Markham, ON

After a particularly heavy storm, Markham, ON homeowners Douglas and Vanla M. found that water was coming into their basement through an unknown source.  Curious to find out where it was coming from, the couple decided to research waterproofing companies that serviced their area.  They found Clarke Basement Systems and they contacted them that same day.

 

A couple of days after contacting them, Clarke sent out waterproofing specialist Ron Monk to evaluate the couple’s basement.  What Ron found as the unknown source was slight hairline cracks that were letting in moisture.  Although not a huge problem at the moment, if left unattended those cracks could grow and cause extensive damage to the walls and basement.  Luckily for the couple, Ron had an ideal solution for their situation.  Ron proposed installing Flexispan along the hairline cracks.  Flexispan is a polyurethane polymer which seals the cracks and effectively protects them from further intrusion of moisture and other outside elements.  Unlike traditional applications such as hydraulic cement or epoxies, Flexispan will not dry up or crack over time.  Additionally it is designed to bend, move and stretch with a naturally shifting foundation wall.  To install Flexispan, Ron called in primary foreman Fitz Wilks and his crew.

 

After a quick and easy one day installation process, Douglas and Vanla’s basement was no longer troubled by the hairline cracks that cursed it. Now they can look to the future knowing their basement troubles are a thing of the past.

Work Requests From Markham, ON
Doulton Court in Markham
Our basement is leaking and need a foundation professional to assess the issue. Thanks! Edwina
Elson Street in Markham
Looks like a basement wall crack and it is leaking water. The size of the crack is maybe a millimeter in size. I think this repair needs to be completed from outside. Please come and look at it and give me an estimate. Thank you. Baski
Jewell St. in Markham
Garage floor and back patio leveling quote.
Prince Regent St in Markham
We have two concrete slabs that need to be reveled
Macon Pl in Markham
Noticed basement is wet after heavy rain. Tested few areas outside the backyard with the water hose and noticed one area water will go into the house.
Pingel Road in Markham
I had a home inspector reviewing my property and he identified there is water damage around the perimeter of my foundation plus kn the garage which is separated from the house. Please advise when it would be convenient for you to come over and provide a coat quote. Thanks Rodica
in Markham
The garage's floor slopes to inside
Reeve Dr in Markham
- Leaking or damp basement floors during rain - Musty odors in the basement - wet/ humid cold room
Ralph Court in Markham
Need a waterproofing and foundation repair
Landsdown Cres in Markham
Traces of moisture and water on back basement wall inside vapor barrier or when pressing on Visible cracks on foundation walls, and basement floor Not sure if house has a proper down slope to keep water outwards and away from outside walls Would prefer an estimate visit evening time, or Saturdays.
Darren Hill Trail in Markham
Water seeping through multiple cracks in the basement wall.
Cathmar Dr in Markham
Water leak in finished basement, looks like through top of foundation or possible weeping holes. Foundation wall crack has been mostly ruled out. Water comes in during heavy rain only. Would appreciate advice.
Eugenia Court in Markham
One side of my garage wall is sinking, developing stair-step cracks. I would like to get an expert opinion and an estimation cost for fixing it.
Wootten Way North in Markham
Water coming into the basement
Senator Reesor's Dr. in Markham
Basement flooding in several areas after yesterday's storms. This happened once last year as well after significant rain. Flooding is from the bottom walls.
Windridge Dr. in Markham
Water leaking into basement
Abercorn Road in Markham
Water seeps into basement (has for years) and now ground is sinking near the side of the house.
Beckwith Crescent in Markham
Garage floor is cracked and sinking. Prefer for someone to come Sunday afternoon. Saturday afternoon work as well.
Sir Lancelot Drive in Markham
Pool deck heaved
in Markham
The wall in the Basement is wet
Serving the following Markham, ON postal codes
L3P 0A1, L3P 0A2, L3P 0A3, L3P 0A5, L3P 0A6, L3P 0A7, L3P 0A8, L3P 0A9, L3P 0B1, L3P 0B2, L3P 0B3, L3P 0B4, L3P 0B5, L3P 0B6, L3P 0B7, L3P 0B8, L3P 0B9, L3P 0C1, L3P 0C2, L3P 0C3, L3P 0C4, L3P 0C5, L3P 0C6, L3P 0C7, L3P 0C8, L3P 0C9, L3P 0E1, L3P 0E2, L3P 0E3, L3P 0E4, L3P 0E5, L3P 0E6, L3P 0E7, L3P 0E8, L3P 0E9, L3P 0G1, L3P 0G2, L3P 0G3, L3P 0G4, L3P 0G5, L3P 0G6, L3P 0G7, L3P 0G8, L3P 0G9, L3P 0H1, L3P 0H2, L3P 0H3, L3P 0H4, L3P 0H5, L3P 0H6, L3P 0H7, L3P 0H8, L3P 0H9, L3P 0J1, L3P 0J2, L3P 0J3, L3P 0J4, L3P 0J5, L3P 0J6, L3P 0J7, L3P 0J8, L3P 0J9, L3P 0K1, L3P 0K2, L3P 0K3, L3P 0K4, L3P 0K5, L3P 0K6, L3P 0K7, L3P 0K8, L3P 0K9, L3P 0L1, L3P 0L2, L3P 0L3, L3P 0L4, L3P 0L5, L3P 0L6, L3P 0L7, L3P 0L8, L3P 0L9, L3P 0M1, L3P 0M2, L3P 0M3, L3P 0M4, L3P 0M5, L3P 0M6, L3P 0M7, L3P 0M8, L3P 0M9, L3P 0N1, L3P 0N3, L3P 0N4, L3P 0N5, L3P 0N6, L3P 1A1, L3P 1A2, L3P 1A3, L3P 1A4, L3P 1A5, L3P 1A6, L3P 1A7, L3P 1A8, L3P 1A9, L3P 1B1, L3P 1B2, L3P 1B3, L3P 1B4, L3P 1B6, L3P 1B7, L3P 1B8, L3P 1B9, L3P 1C1, L3P 1C2, L3P 1C3

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