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Products & Services
Foundation Repair Services & Products
Push Pier Underpinning For Settlement, Foundation Leveling, Sinking Foundation Repair
Geo-lock Wall Anchors
Geo-lock Helical Anchors
PowerBrace Bowed Wall Repair
CarbonArmor Fiber Wall Repair
SmartJack Crawl Space Support
Slab Pier Repair
PolyLevel Concrete Lifting
Shotcrete Wall Restoration

We Are Oshawa's Proven Foundation Wall Crack Repair Contractor

For a FREE no-obligation foundation repair estimate in Oshawa, ON, please fill out the estimate form and Foundation Supportworks of Ontario will contact you shortly.
Happy Customers Surrounding Oshawa, ON
Work Requests

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Responsible foundation repair company serving Oshawa, Ontario

We not only adhere to the highest industry standards, we strive to be the industry leader in the home improvement related services we provide. We also use state-of-the-art products and technology which are designed to fix your home. We are the authorized Basement Systems dealer in Oshawa, ON.

Services we offer in Oshawa:

  • Wet/flooded basement waterproofing solutions.
  • Lifetime warranty on all perimeter waterproofing systems.
  • Foundation and structural repair solutions.
  • 25-year warranty against manufacturing defects on foundation products.
  • Crawl space sealing with CleanSpace vapor barrier.
  • 25-year warranty on crawl space encapsulation systems.
  • Financing Available
  • FREE written estimates and inspections, and fast installation
Job Stories From Oshawa, ON
Oshawa, ON Foundation Crack Repaired with FlexiSpan

Stephen D. of Oshawa, ON noticed that his foundation wall was showing signs of water seepage, manifested in the form of a lengthy wall crack. Worried for the healthfulness of his home, he sought out assistance in fixing this problem, which led him to the talented team at Clarke Basement Systems.


Claude Mathieu met Stephen at his residence to analyze the problem and determine what the best course of action for remediation would be. Claude recommended the FlexiSpan waterproofing system, designed specifically to fix leaks in foundation walls. Primary Foreman Lucio Flores arrived with his crew to perform installation, which took only a single day and required minimal intrusion into the home. Stephen was ecstatic about the finished project, and greatly appreciated the peace of mind that his foundation would remain leak free.

Work Requests From Oshawa, ON
Project Location: Oshawa, ON
I have some water damage in my basement. I've removed the laminate flooring and found the subfloor is damp and black along an outside wall.
Project Location: Oshawa, ON
Sagging floors in kitchen and upstairs, need a consultation to raise and possibly repair joists. We have some metal poles but the also need to be adjusted, some added and some replaced due to rusting.
Project Location: Oshawa, ON
Large crack in basement foundation. Starts at window and ends ~6 inches from basement floor. Attempted to seal on my own with filler however still appears to leak. Crack can be seen at window from outside. Need done ASAP. And information appreciated. Thank you in advance 🙏🏼
Project Location: Oshawa, ON
At times I can get a strong mouldy odour in the basement and the cellar.
Project Location: Oshawa, ON
Need a cold room sealed and finished.
Project Location: Oshawa, ON
Part of my floor has sloped into the middle of the house. I'd like to find out if it is repairable and what my options are. I appreciate your time.
Project Location: Oshawa, ON
We are seeing pooling on our basement floor. We have done some investigating and attempted to seal what we believed was the cause. However the problem remains and we are seeing more water pooling than before.
Project Location: Oshawa, ON
I would like to make my cold room a finished storage space.
Project Location: Oshawa, ON
Waterproofing basement
Project Location: Oshawa, ON
Leaky spot in foundation that is dripping into the basement during heavy rainfalls
Project Location: Oshawa, ON
Need to get the 4 walls of the basement waterproofed before getting rooms built in it. External measurement= 34ft. x 22ft.
Project Location: Oshawa, ON
Water issue with basement wall, only one section approx. 15ft at the rear of the home, under deck. Moisture coming through wall
Project Location: Oshawa, ON
Water leak in basement from foundation
Project Location: Oshawa, ON
We have had some repairs completed by you company upon the purchase of our home. We have a significant leak in the crawl space area of our home that would require repair as a significant amount of water is coming into our home. If someone could please contact me as soon as possible to arrange an estimate for repair, I would appreciate it. Thank you
Project Location: Oshawa, ON
I have a crack in the foundation and sometimes water leaks in my basement.
Project Location: Oshawa, ON
Need a quote for an interior solution to a leaky basement No sump pump present 1-2 walls are the main issue Unfinished 100yr old basement Block and poured concrete Likely no exterior weeping tile present
Project Location: Oshawa, ON
Hi! We purchased our first home 2 weeks ago and there's water in the basement 🙁 we know there was a small leak somewhere but assumed it was the old windows down there. Since moving in, we've pulled back some panelling to see and discovered large cracks. This is all very new to us. Is there someone who would come out and provide a free estimate? Or what is the cost involved to have someone come out and give a quote? Thanks so much Ashley
Project Location: Oshawa, ON
We noticed the sides of the wall in our crawl space are leaking at the bottom. There are also some cracks we have concerns about.
Project Location: Oshawa, ON
Hello we have a small water leak in our basement I'm interested in having a sump pump installed as our house does not have one. Thank you Dan
Project Location: Oshawa, ON
Recently uncovered a lot of moisture and water behind our walls in our partially renovated basement due to the big rainstorm a few weeks back. Since then the whole basement has been demo'd and just would like a quote on an interior or exterior waterproofing system. Thanks in advance and I appreciate your time.
Serving the following Oshawa, ON postal codes
L1C, L1G, L1H, L1J, L1K, L1L, L1N

our service area