Basement Crack Repair Toronto – Foundation Crack Injection & Waterproofing Experts
Basement cracks are one of the most common causes of water leaks, foundation damage, and mold growth in Toronto homes. Even small cracks in basement walls or floors can allow water to enter, leading to costly structural repairs if ignored.
Kavern Restoration is one of the leading basement crack repair contractors in Toronto, trusted by homeowners and property managers for permanent foundation crack injection and basement waterproofing solutions across the GTA. We specialize in residential basement crack repair for Toronto homeowners, with thousands of successful crack injection projects completed.
If you’re searching for basement crack repair near me in Toronto, our local team provides fast inspections and same-week service across the GTA. Whether you’re dealing with hairline cracks or active water leaks, we deliver permanent repairs — not temporary fixes.
👉 If your basement is leaking, acting fast can prevent thousands in damage.
Most basement crack repairs are completed from the interior with minimal disruption — no excavation required in most cases.
For full building restoration, visit our main Building Repair Toronto page.
Our Basement Crack Repair Services
We provide complete crack repair solutions tailored to your basement. Each project addresses your specific crack type and water entry point.
Basement Crack Injection
We use epoxy and polyurethane injection to permanently seal cracks and stop water intrusion. Epoxy restores structural strength. Polyurethane expands to fill voids and stop active leaks. This is our most requested service. Most crack injections are completed within 1-2 hours per crack. Cost: $500 – $1,500 per crack.
Basement Foundation Crack Repair
We repair structural cracks in foundation walls to restore strength and stability. Horizontal or stair-step cracks wider than 5mm indicate foundation movement. These require immediate attention. No excavation needed for most repairs. Cost: $1,500 – $5,000.
Basement Wall Crack Repair
We fix vertical, horizontal, and stair-step cracks in concrete walls caused by soil pressure and settlement. Vertical cracks are common and often less urgent. Horizontal cracks are serious and need prompt repair. Concrete crack repair from the interior only. Cost: $500 – $3,000.
Basement Floor Crack Repair
We repair cracks in basement slabs to prevent moisture intrusion and structural weakening. Floor cracks allow radon gas, moisture, and soil gases to enter your home. Sealing them improves indoor air quality. Cost: $800 – $3,000.
Crack Sealing & Waterproofing
We seal non-structural cracks and apply waterproof coatings to prevent future leaks. For active leaks, see our basement waterproofing systems page. Minimal disruption to your home. Cost: $2,000 – $15,000.
Basement Drainage Solutions
We install drainage systems to keep your basement dry and prevent recurring issues. Interior weeping tile, sump pumps, and drain boards channel water away before it enters. Ideal for homes with chronic dampness. Cost: $3,000 – $12,000.
What Causes Basement Cracks
Understanding the cause helps us design permanent repairs that address the root problem.
Soil pressure against foundation walls
Wet soil expands and pushes against foundation walls, causing bowing and cracking. This is common in Toronto's clay soils.
Freeze-thaw cycles
Water enters cracks, freezes, expands, and makes cracks wider. Toronto experiences 40+ freeze-thaw cycles each year.
Poor drainage around foundation
Downspouts discharging next to the house or missing weeping tiles direct water toward your foundation instead of away.
Hydrostatic pressure buildup
Groundwater pushes against basement walls and floors with significant force, forcing water through any opening.
Natural settling of the building
Minor vertical cracks from settling are common. But anything wider than 5mm needs professional attention.
👉 Water pressure is the #1 cause of basement leaks. Stop the water, stop the leak.
Our Crack Repair Process
We follow a structured and transparent approach. No shortcuts. No surprises.
- Inspection & Crack Analysis – We evaluate crack width, orientation, location, and whether the crack is active or dormant.
- Identify Structural vs Non-Structural Cracks – Not all cracks need injection. We identify which cracks need repair and which can be monitored.
- Surface Preparation – The crack area is cleaned, and injection ports are installed at regular intervals along the crack path.
- Injection or Sealing Method Selection – Epoxy for structural strength. Polyurethane for active water leaks. Sealant for hairline cracks.
- Crack Repair – Epoxy or polyurethane is injected from bottom to top until the crack is completely filled. Most repairs take 1-2 hours per crack.
- Waterproofing – If needed, waterproof coatings or drainage systems are added to prevent future issues.
- Final Inspection – We verify the crack is sealed, test for moisture, and provide photo documentation.
Cost of Basement Crack Repair
Costs vary based on crack type, accessibility, and repair method. Here are typical 2026 price ranges.
| Service | Typical Cost Range |
|---|---|
| Crack injection (epoxy or polyurethane) | $500 – $1,500 per crack |
| Foundation crack repair (structural) | $1,500 – $5,000 |
| Floor crack repair | $800 – $3,000 |
| Crack sealing & waterproofing | $2,000 – $15,000 |
| Drainage solutions (sump pump + weeping tile) | $3,000 – $12,000 |
👉 Most projects range between $800 – $5,000
A professional inspection is required for accurate pricing. All quotes are free with no obligation.
Signs You Need Basement Crack Repair
Ignoring these signs leads to mold, structural damage, and much higher repair costs.
Water leaking through walls or floors – Active water entry during or after rain. Most urgent sign.
Visible cracks in foundation – Any crack wider than 1mm should be evaluated. Horizontal cracks are most serious.
Damp or musty basement smell – Indicates chronic moisture even if you don’t see standing water.
Mold or mildew growth – Black, green, or white growth on walls, floors, or stored items.
White powder (efflorescence) on walls – Mineral deposits left by evaporating water. Indicates chronic moisture movement.
Pooling water after rain – Standing water on basement floor. Drainage system likely failed.
Bowing or leaning walls – Critical sign of foundation failure. Emergency repair required.
👉 Delaying repair by one year can turn a $1,000 crack injection into a $15,000 foundation replacement.
Properties We Serve
Our team provides basement crack repair services across all residential property types.
- Residential homes – Single-family homes, bungalows, two-story houses. Most common client type.
- Basements in townhouses – Shared foundation walls require coordination with neighbors.
- Apartment basements – Multi-unit buildings. Access may require tenant coordination.
- Small commercial buildings – Retail basements, office basements, storage areas.
- Heritage homes – Old Toronto, Cabbagetown, The Annex. Requires material matching and careful methods.
Service Areas – Local Basement Crack Repair Near You
We provide basement crack repair near me services across the entire Greater Toronto Area:
| Area | Service Coverage |
|---|---|
| Toronto | Downtown, East York, Old Toronto, York |
| North York | Willowdale, Bayview Village, Don Mills |
| Scarborough | Agincourt, L’Amoreaux, Malvern |
| Etobicoke | Mimico, Rexdale, Islington |
| Mississauga | Square One, Port Credit, Streetsville |
| Brampton | Bramalea, Springdale, Heart Lake |
| Markham | Unionville, Thornhill, Cornell |
If you’re searching for basement crack repair near me in any of these areas, our local team provides fast inspections and same-week service.
👉 Most projects range between $1,000 – $25,000
For accurate pricing, we recommend a free inspection. Most quotes are no-obligation.
Why Choose Our Team
Homeowners choose us because we deliver permanent results with minimal disruption.
10+ years of experience – Thousands of basements repaired across Toronto and the GTA
Advanced crack injection methods – Epoxy for structural strength, polyurethane for active leaks
Permanent waterproofing solutions – We address the cause, not just the symptom
Fully insured team – $5M liability coverage plus WSIB clearance
Fast response for leaks – Emergency service available for active water intrusion
Free inspections – No-obligation assessment with written summary and photos
No excavation required – Most repairs completed from interior with minimal disruption
1-2 hour repairs – Most crack injections completed in a single visit
Recent Basement Crack Repair Projects
| Project | Location | Problem | Solution | Time |
|---|---|---|---|---|
| Active Leak Repair | East York | Water gushing through wall crack | Polyurethane injection | 90 minutes |
| Foundation Crack | North York | Horizontal crack in foundation | Epoxy injection + carbon fiber | 2 hours |
| Floor Crack Sealing | Etobicoke | Multiple floor cracks, dampness | Routing + polyurethane sealant | 3 hours |
| Full Basement Waterproofing | Scarborough | Chronic dampness, efflorescence | Crack injection + sump pump | 1 day |
👉 Contact us for case studies and before/after photos of similar projects.
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Frequently Asked Questions
Q1: How long does crack repair last?
Ans: Epoxy and polyurethane injections are permanent. The repair will last as long as your foundation — decades.
Q2: Is injection permanent?
Ans: Yes. Epoxy bonds permanently to concrete. Polyurethane expands to fill voids and remains flexible. Both are permanent solutions.
Q3: Can cracks come back?
Ans: If the underlying cause (soil pressure, drainage issues) is not addressed, new cracks may form elsewhere. We identify root causes during inspection.
Q4: Do you offer emergency service?
Ans: For active water leaks, we offer priority response. Call us immediately if water is actively entering your basement.
Q5: How long does repair take?
Ans: Most crack injection repairs are completed within 1-2 hours per crack. You can use your basement the same day.
Q6: Do you need to excavate?
Ans: No. Most basement crack repairs are completed from the interior with minimal disruption — no excavation required in most cases.
Q7: Do you provide a warranty?
Ans: Yes. 5-year workmanship warranty on all crack injections. Permanent material warranty on epoxy and polyurethane products.
Q8: Do you offer free inspections?
Ans: Yes. Free basement crack inspection with written summary, photos, and preliminary budget. No obligation.