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Decemeber 22, 2025
Jonathan McMahon
If you’ve spotted a crack in your foundation, the first question is usually: How much is this going to cost? The honest answer is: it depends on what kind of crack it is, whether it’s leaking, and whether the fix is a simple injection or a bigger basement waterproofing project.
This guide breaks down the most common foundation crack repair methods in Toronto/GTA, typical price ranges, and the real cost drivers so you can budget confidently and avoid overpaying.
Typical foundation crack repair cost in 2026
Most homeowners fall into one of these buckets:
- Minor crack repair / Polyurethane crack injection (most common): range from about $500 to $1,000 per crack depending on the length and width of the crack
- External waterproofing to seal a crack when the inside is not accessible or the wall is finished. range from $1,500 to $2,500 depending on the depth and obstructions.
- Structural Epoxy Crack Injection: can range from $800 to $2500 per crack depending on the size and severity.
Important: Pricing varies a lot by house type, access or finished basement vs unfinished, and whether the crack is actively leaking.
2026 pricing table: common repair methods (Toronto/GTA)
1) Crack injection (interior) pricing “per one crack”
Crack injection is the most common fix for poured concrete foundation cracks when the goal is to stop water intrusion (and sometimes restore strength, depending on material).
| Repair type | Typical price range | Best for |
|---|---|---|
| Polyurethane injection (water-sealing) | Often $500 – $1,500 per crack | Wet Cracks, Water Seepage or leaking |
| Epoxy injection (structural bonding) | Commonly $800 – $1500 depending on length/access | Dry cracks where structural bonding is desired |
Typical uses for each materials: epoxy is often used for cracks that require structural repair, while a polyurethane foam injection is commonly used to seal wet cracks or crack with an active leak.
2) Waterproofing system work (if the crack is a symptom, not the whole problem)
If you have recurring water problems, multiple cracks, or hydrostatic pressure issues, injections alone may not be the “forever fix.” That’s where internal drainage systems or exterior waterproofing comes in and it typically priced per linear foot.
| Repair type | Typical price range | Best for |
|---|---|---|
| Exterior foundation waterproofing | Often $140–$300 per linear foot | Water entering from outside; long-term prevention |
| Interior weeping tile system | Often $80–$150 per linear foot | Managing water under the slab and at the wall join. |
For an instant quote click here to try our new 2026 Waterproofing cost calculator.
What affects foundation crack repair cost the most?
Here are the pricing levers that can change quotes in real life:
Crack characteristics
- Width & length: longer/wider cracks require more time and material.
- Location: corner cracks, cracks near utilities, or tight areas can add complexity.
- Active leak: higher flow leaks can require additional prep and steps.
Access (this is huge)
- Unfinished basement wall: faster, cheaper.
- Finished basement: may require removal/repair of drywall, framing, insulation, flooring, etc.
The real “why”
A crack is a symptom. The cause can be:
- normal shrinkage (often manageable),
- hydrostatic pressure/water management,
- settlement or structural movement (more serious).
If there’s movement, the crack may require carbon fiber stitching to prevent the crack from opening up any further.
Polyurethane vs epoxy injection: which one do you need?
A simple explanation homeowners actually understand:
- Polyurethane injection expands and reacts with moisture after a catalyst is added and is often used to seal a wet or actively leaking crack.
- Epoxy Crack injection cures with strength and bonds to the concrete. Epoxy is commonly used when a structural crack repair is required.
Each Foundation crack repair is unique and requires the appropriate material and injection to adequately address the crack properly.
When a “cheap crack repair” becomes expensive
Foundation crack repair jumps in cost when you see things like:
- Horizontal cracks, significant displacement, or bowing walls (may require stabilization)
- Repeat leaks after prior repairs (usually means the source problem wasn’t solved)
- Multiple cracks + poor exterior drainage
- Exterior excavation required (driveway, decks, tight lot lines, landscaping restoration)
How to get an accurate quote (and compare contractors fairly)
When you request estimates, ask for these specifics:
- Repair method & material (polyurethane vs epoxy; and why)
- What prep is included (cleaning, port spacing, patching)
- Warranty details (what’s covered, transferability, exclusions)
- Access work (finished basement removal/repair included or not)
- Root-cause notes (grading, downspouts, drainage recommendations)
FAQs
How much does crack injection cost in Toronto?
Foundation crack injections range from mid hundreds to low-thousands per crack, with examples like $500–$1,000 on simpler injections and up to $1,500+ depending on complexity.
Is foundation crack injection worth it?
If the crack is suitable (often poured concrete cracks without major displacement), injection can be a cost-effective way to stop leakage. But if the crack is caused by ongoing movement or exterior water pressure issues, injection alone may not be the complete solution. The crack may require carbon fiber stitching and or external waterproofing.
What cracks are “serious”?
In general, cracks with horizontal patterns, displacement, or signs of ongoing movement are more concerning than small shrinkage/vertical cracks. When in doubt, get it assessed.
Can you inject a crack that’s actively leaking?
Yes you can inject an actively leaking crack. Typically a polyurethane injection is used for sealing wet and actively leaking cracks, because it’s is hydrophobic and reacts to moisture sealing off the crack with a closed sell foam.
A practical takeaway (2026 budgeting)
A practical takeaway (2026 budgeting)
If you’re trying to plan a realistic budget before you collect quotes, think of foundation crack repair as a diagnosis-first purchase, not a fixed price item.
- If it’s one accessible crack and the wall is unfinished, you’re usually looking at a contained repair (often the most affordable category).
- If the basement is finished, assume the price can rise quickly—not because the crack is “worse,” but because access and restoration become part of the job.
- If you’ve had repeat seepage, water in multiple spots, or you’re noticing the crack changing over time, budget as if you may need more than a single repair—often a water-management solution rather than just sealing the line.
The smartest way to avoid overpaying (or paying twice) is to ask every contractor to explain two things in writing: what caused the crack and what prevents it from returning. If they can’t clearly answer both, the cheapest quote can end up being the most expensive one.
