Foundation Crack Repair in Toronto & GTA
Stop Leaks. Protect Your Home. Seal It For Good.
Even small cracks in your foundation can lead to water leaks, mold growth, and long-term structural problems. At DrainPro Plumbing & Drain Services Inc., we specialize in permanent foundation crack repairs inside or outside using the right method for your home and soil conditions. We work across Toronto, Mississauga, Vaughan, Brampton, Richmond Hill, Markham, Etobicoke, Pickering, North York, and beyond.
24/7 Emergency Service
Fully Licensed & Insured
Guaranteed Satisfaction
Rated 5 Stars by Homeowners
Why Fix Foundation Cracks?
Cracks in concrete or block foundations can form from settling, hydrostatic pressure, frost, or poor drainage. Left untreated, even hairline cracks can let in water, cause damp smells, and compromise the value of your home.
Early repair saves you from expensive restoration down the road, especially before finishing a basement or selling your property.
⚠️ Signs You Have a Problem
Water seeping through cracks in the basement wall
Damp spots after rain or thaw
Moldy odours in corners or behind drywall
White mineral stains or peeling paint near cracks
Horizontal, vertical, or stair-step cracks
Cold room or window well dampness
How We Repair Foundation Cracks
Our custom repair foundation crack include
Interior Injection Sealing – Best for poured concrete walls. We inject flexible polyurethane or epoxy resin into the crack from the inside. It expands to fill the entire void even through to the outside. This method is fast, clean, and permanent.
Exterior Excavation & Seal – Ideal for active or wide cracks. We dig down to the foundation from outside, clean the surface, seal it with hydraulic cement and membrane, then backfill. This fully blocks water from entering the wall in the first place.
Block Wall Repairs – Block foundations need special care. We use epoxy coatings, reinforced mesh, or rebuild methods where necessary.
Our Crack Repair Process
At DrainPro, we make sure every job is done professionally, cleanly, and with full transparency. Here’s exactly how the process works from start to finish
1. Assessment
We inspect the crack from inside or outside, check moisture levels, and explain the repair options clearly.
4. Finishing
We smooth the surface, clean up fully, and restore drywall or landscaping if needed.
2. Prep & Protection
The area is protected with drop sheets. We move furniture, if needed, and control dust and debris.
5. Walkthrough & Warranty
We show you the completed work, review the warranty, and offer maintenance tips if necessary.
3. Repair Method
We perform injection sealing or exterior excavation based on your home’s needs.
6. Clean-Up & Walkthrough
We clean the area, walk you through how it works, and provide warranty info tips.
Fast, Clean & Built to Last
Why Choose DrainPro?
At DrainPro, we bring a reputation built on trust, efficiency, and long-lasting results.
Here’s why homeowners across Toronto, Mississauga, Vaughan, and the entire GTA rely on our drain expertise
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Customer Reviews
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What is a backwater valve and how does it work?A backwater valve is a plumbing device installed on your main sewer line to prevent sewage from backing up into your home. During heavy rainfall or sewer overload, the valve flap automatically closes to stop water and sewage from flowing backward into your basement. It’s one of the most effective ways to prevent basement flooding in Toronto and the GTA.
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Do I really need a backwater valve in Toronto?Yes if your home has a basement and is connected to the city’s sewer system, you are at risk during heavy storms. The City of Toronto recommends backwater valves to protect your home from sewage backups and even offers a subsidy program to help cover installation costs.
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How much does a backwater valve installation cost?The cost typically ranges from $1,500 to $3,500, depending on your home's plumbing system, accessibility, and permit requirements. The City of Toronto’s Basement Flooding Protection Subsidy Program offers homeowners up to $1,250 back to help offset the cost.
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How long does the installation take?In most cases, backwater valve installation takes one day. Our DrainPro team handles everything from initial inspection to concrete restoration, ensuring a smooth and efficient process with minimal disruption to your home.
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Is a permit required for backwater valve installation?Yes most municipalities, including Toronto, require a plumbing permit before installation. Don’t worry DrainPro takes care of the entire permit process for you, ensuring everything is up to code and subsidy-compliant.
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How do I maintain a backwater valve?You should inspect your backwater valve every 6 months. Open the clear cover and check for debris, wear on the rubber seal, and proper flap movement. DrainPro will show you how to do this during installation and offers maintenance services if needed.
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Will a backwater valve stop all types of basement flooding?A backwater valve protects against sewage backups from city sewer lines. To protect against groundwater or stormwater flooding, you may also need a sump pump or weeping tile system. We offer full basement waterproofing solutions ask us about your options.
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Can I get help applying for the city rebate program?Absolutely. Our team will guide you through the City Basement Flooding Protection Subsidy Program and assist with all necessary paperwork to help you get your rebate quickly and easily.
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How do I book a free quote for backwater valve installation?You can call us at (647) 867-9779 or fill out our online quote form. One of our licensed technicians will visit your home, inspect your system, and provide a detailed estimate with no pressure.
Don’t wait for water damage or mold. If you see a crack in your basement wall, call the pros at DrainPro.