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Products & Services
  • Services et Produits de Réparation de Sous-sol
  • WaterGuard Système Intérieur
  • DryTrak Canal de Drainage
  • TrenchDrain Grille de Vidange
  • IceGuard Ligne de Décharge
  • FlexiSpan Réparation de Fissures Murales
  • Scellage des Fissures
  • WellDuct Vidange de Fenêtre
  • BrightWall Panneaux étanches
  • ThermalDry Mur Barrière
  • Installation de Tuiles de Drainage
  • SuperPump Système de Pompe
  • Sanidry Déshumidificateur
  • Réparation du Mur de Fondation
  • PolyLevel Levage de Béton
  • EZ Post Réparation de Pont
  • Shotcrete Restauration de Mur
Before and After Pictures from Cornwall
Cracked Foundation Wall in Cornwall, Ontario

Cracked Foundation Wall in Cornwall, Ontario

Before After
Cracked Foundation Wall in Cornwall, Ontario Cracked Foundation Wall in Cornwall, Ontario

This client contacted us initially to fix his humidity problem in his crawlspace, but while we were there, we noticed that there was a very large crack in the foundation wall of the crawl space.

We fixed this issue by installing the PowerBrace system. It consists of zinc coated beams and components. PowerBraces utilize a joist reinforcement that distributes the load evenly. The crawl space is now stable and sealed.

Company Awards
#1 Canadian Dealer 2020
We are so proud to announce that we have won, for another year, the Top Candian Dealer award within the... [Read more]
25 Miles Award
After having served thousands of clients and repaired thousands of basements, we have finally reached the great milestone of the... [Read more]
2019 Consumer Choice Award
Systèmes Sous-Sol Québec was selected as the winner of the 2019 Consumer Choice Award in the category "Foundations- Replacement and... [Read more]
More Awards

Your Dependable Cornwall, ON Wet Basement & Foundation Crack Repair Experts

Happy Customers Surrounding Cornwall, ON
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Basement Waterproofing, Foundation Repair & More in Cornwall, Quebec

Systèmes Sous-sol Québec is the leading local expert in home repairs and general maintenance in Cornwall. They offer solutions to problems in almost any area of your home, including crawl spaces, basements, foundations, gutters, and more. Whether there is a problem that needs fixing or you're simply looking to upgrade certain parts of your home, we have you covered.

Services we offer in Cornwall:

  • Basement waterproofing solutions
  • Foundation & structural repair solutions
  • Basement finishing & remodeling
  • Crawl space sealing & encapsulation
  • Gutters & gutter guard installation
  • Aspen air purifiers
  • Home insulation
  • And more!

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 that are designed to fix your home. Plus, as the authorized Basement Systems dealer in Cornwall, ON, we offer limited warranties on our products, including perimeter drains, crawl space encapsulation systems, and foundation products. To schedule your free estimate or discuss our financing options, click the button below and get started.

FREE Quote

Our Basement Waterproofing Solutions in Cornwall

Basements are a common spot for water intrusion in homes due to the soil around them. When soil gets wet, dries out, or is displaced, it can cause shifting around the basement and lead to cracks or other vulnerabilities in the exterior wall. Though this is a common problem, the right solution for your home can be a unique combination of techniques and products. Thankfully we carry all of the most up-to-date basement waterproofing products available, including sump pumps, perimeter drains, wall repair products, and more.

Don't let water intrusion stop you from using your basement the way you want to. Whether it's a simple storage area or you're looking to finish the space, keeping it dry will do wonders for the long-term health of your home.

Professional Basement Finishing & Remodeling Services

If you see your unfinished basement as an opportunity for expansion rather than just another dingy, dark room for storage, then you've come to the right place. We can improve and transform all aspects of your basement, including the walls, floors, ceiling, insulation measures, and finishing touches to give it your special flare. The benefits of basement finishing are endless and can create a totally new, usable space in your home. Some design ideas we can help you explore include:

  • Additional living space
  • In-law apartment
  • Office space
  • Home gym
  • Entertainment center
  • Play area for children

As an authorized Total Basement Finishing contractor, we use products that include a 50-year basement wall warranty and a 30-year ceiling tile warranty. Plus, our waterproof basement flooring options are built to last and fight off moisture that can be present in basements. To explore your basement remodeling options and get a free quote, click the button below and schedule your consultation.

FREE Quote

Foundation Repair & Structural Improvements by Systèmes Sous-sol Québec

Foundation problems can affect your entire home in significant ways. If the foundation shifts out of place, it can no longer properly support your home and may result in slanted floors, cracked walls, cracked ceilings, windows and doors sticking in place, and more. Similarly, when your foundation is cracked it can allow for serious water intrusion or pest infestations. Both pests and water use foundation cracks as their way into your home where they wreak havoc, especially when mold begins to grow. What starts as mold or mildew around the foundation can negatively affect whole-home air quality from top to bottom and result in wood-rot, compromising the structural integrity of your home.

Foundation products & services we offer:

  • Push pier systems
  • Helical foundation piers
  • Crawl space supports
  • Basement wall anchors

With our full suite of foundation repair products, we can address almost any foundation problem you may be having. Unsure about the health of your home's foundation? Start with a free inspection and cost estimate from us.

Crawl Space Encapsulation, Sealing, & Other Repair Services

Systèmes Sous-sol Québec installs the unbeatable CleanSpace® crawl space encapsulation system that will take your crawl space from dirty and useless to clean and usable storage space. In addition to sealing off your crawl space and making it waterproof, we also offer crawl space jacks for structural support and prevention of sagging crawl space ceilings— this will also help prevent sagging of floors above the crawl space. To finish off your new crawl space, we also install access wells and thermal insulation to protect your property.

The CleanSpace® system completely transforms your dirt floor crawl space into a sealed environment, dramatically reducing the humidity levels. Lower humidity levels can reduce or eliminate mold growth, rot, and pests from your crawl space. This ensures long-term home health and air quality, starting with your crawl space. We offer free estimates on any of our crawl space encapsulation and repair services in Cornwall.

Get a free estimate on any of our services in Cornwall!

If your home needs repairs or improvements in the Cornwall area, call us. We offer free estimates on any of our foundation repair services, crawl space encapsulation and repair, basement finishing, home insulation, and air purifier installation. Call 1-844-450-2728 or click the button below to get started.

FREE Quote

Case Studies From Cornwall
The client's concrete block wall foundation was bowing inwards because of hydrostatic pressure. Water infiltration coming in from the small cracks on...
Job Stories From Cornwall, ON
Damp crawl space... a problem solved in Cornwall

When our client called us, he was concerned about his damp crawl space, and he was right to worry. Damp crawl spaces bring humidity upstairs and cause the growth and proliferation of dust mites, mold, and smelly rooms. If you feel like your crawl space air is damp, smelly and humid did, you should address this issue as soon as possible because it affects the air that is circulating in your home and consequently affects the air you breathe! To analyse thoroughly the crawlspace and recommend our different solutions, we sent our specialist Michael who did a FREE inspection.

We solved this issue by installing TerraBlock foam insulation with a vapor barrier under the CleanSpace liner which is a multi-layer membrane that contains a antimicrobial additive to stop water vapor and condensation. While these products help seal the whole dirt ground and block water vapors from flowing through or off the crawl space walls and floor, the SaniDry Sedona dehumidifier system helps dry the air no matter how damp it is. It’s a high-performance dehumidifier and filtrations system that help prevent mold and reduce musty odors by drying the air. This air, the air that circulates in your home from ground to top will feel healthier and more comfortable.

We are very glad to have helped this client fix his humidity problems with the most effective and efficient products on the market.

Damp crawl space... a problem solved in Cornwall - Photo 1Damp crawl space... a problem solved in Cornwall - Photo 2
Work Requests From Cornwall, ON
Project Location: Cornwall, ON
Crawl space incapsulation pricing
Project Location: Cornwall, ON
Hello, I have an older home (1937) with a leaking basement. At a time like this with a lot of melting snow, water is entering from almost the whole perimeter of floor joints, as well as parts of the floor and walls. I'm looking to take care of this in the coming months. Thanks! Juraj
Project Location: Cornwall, ON
I get some water in my basement when there's a large snow melt
Project Location: Cornwall, ON
Foundation bowing wall repair. 1 whole wall section only and possibly need financing.
Project Location: Cornwall, ON
Crawl space Smell Sinking floor
Project Location: Cornwall, ON
It's an 1.5 story single house at 11th St W. Cornwall (ON), an inspection in March shows a masonry block leaning in its south crawl space. Are you available for doing the estimation and repair in Cornwall? Thanks!
Project Location: Cornwall, ON
Recently moved to Summerstown (Cornwall) to a house with a sump pump system with back-up and would like to have it inspected and get recommendations for maintenance etc. (No previous experience with a sump pump).
Project Location: Cornwall, ON
My basement leaked last winter and iwant it fix. Please give me a quotation. Thanks
Project Location: Cornwall, ON
Small cracks in basement wall, some with signs of being wet
Project Location: Cornwall, ON
I have an unfinished basement, with some cracks along one wall. Looking to get injections (hopefully). I would love a quote!
Project Location: Cornwall, ON
Bonjour, mon inspection de la maison a révélé une évaluation de la fondation de la maison.
Project Location: Cornwall, ON
Leaky basement
Project Location: Cornwall, ON
Iron ochre in weeping tile coming into sump pump. Seems it's been there a long time and not as severe as most pictures I've seen! Builds up at lip of drain into sump pump and water flows out slowly as it has to rise above mound which appears to peak at a point. Hairline cracks in floor with white powder material as water evaporates thus I suspect water buildup beneath slab. City water so plumbing OK but am on a septic system. I hear this usually occurs near bodies of water and am across the street from St-Lawrence river.
Project Location: Cornwall, ON
Hello! last november 2019 ,our basement flooded ....we just purchased this old hoe in may of 2019;we had a heavy rainfall and low and behold my whole basment was flooded where we had to replace all the flooring due to damage as our insurance company said due to seapage from outside,we were not i have coverage for seapage,but only if its this morning ,i go downstairs and low and behold,i see apool of water starting allalong the cement foundation starting again and i went outside and i can see the foundatin is wet and it has to be due to seapage once again.......i need to fix this some how but dont know what route to take as preventive measures so this doesnt happen again without costing us thousands of dollars.......can i please get feedback or a quote?
Project Location: Cornwall, ON
There was water in the basement last winter. but i thought its due ti heavy snow fall. But last month when we had a heavy rainfall there was water again in the basement
Project Location: Cornwall, ON
Have a n unfinished dirt floor crawl space, very short and smells musty, had a mold inspector come in and there was no mold after inspection but would like to make sure it is not a future problem. exploring options for and gathering pricing.
Project Location: Cornwall, ON
Hope to get a quote for encapsulation of basement of 1850s home. Thanks
Project Location: Cornwall, ON
Looking to have a crack repaired in cinder block basement wall and/or tile drainage replaced along east wall of house.
Project Location: Cornwall, ON
Leaking basement. Sump pump not collecting any water from the ground. Might need weeping tile replacement
Project Location: Cornwall, ON
Foundation has severe damage do to lack of upkeep. Purchased house 1 year ago. Wet basement. Noticed exterior doors don't properly close and new cracks on inside walls. I'm interested in a quote as well as financing. Thank you.