If you’re seeing a damp line or hairline seam in your basement, you want straight numbers and a reliable fix. Below you’ll find realistic price ranges for Toronto and the GTA, when each method makes sense, and the few factors that move the budget up or down. The goal is simple: help you decide quickly whether you need a seal, stabilization, or exterior waterproofing—and what that means for your wallet.
How Much to Fix Foundation Cracks in a Typical GTA Home
For a single leaking vertical seam in a poured wall with decent access, plan on $1,500–$3,000 for an interior injection that stops water.
If the wall shows lateral pressure (a horizontal line or mild bow), adding carbon-fibre straps or anchors moves the investment to ~$7,500–$15,000+.
When recurring moisture is driven by failed drainage against the wall, exterior excavation with membrane and new drainage typically starts around $15,000 and scales with wall length, depth, and access.
These bands are planning numbers. A short site visit confirms where your home lands.
Vertical Foundation Crack Repair Cost — Interior Injection (Most Common)
Most vertical seams are shrinkage-related and do not indicate loss of wall capacity. The standard remedy is interior injection:
- Polyurethane injection expands to block active leaks and fills irregular paths.
- Epoxy injection cures rigid to bond both sides of the seam; it’s chosen where added stiffness helps or when pairing with a few carbon-fibre staples.
Typical price for one accessible seam: $1,500–$3,000 (prep, route, ports, inject, surface seal, and a small finish patch if required).
Multiple seams are priced per location; bundled work often reduces the per-seam figure.
Why this method? It’s targeted, fast, and avoids digging. If your only goal is to stop water in one spot, this is usually the most efficient path.
Horizontal Foundation Crack Repair Cost — When Stabilization Is Required
A true horizontal line can signal lateral soil pressure and slight inward bowing. In these cases, you’re not just blocking water; you’re reinforcing the wall. Scope typically includes carbon-fibre straps (or, in some layouts, anchors/tiebacks) set at intervals, with localized sealing of visible seams.
Typical price for a span with mild bowing: ~$7,500–$15,000+ depending on wall length, number of straps/anchors, access around utilities, and whether engineering is required.
If movement is significant, an engineered scheme (more hardware, possibly interior bracing) adjusts the budget upward.
Bottom line: If the wall is moving, a “seal only” isn’t responsible. Stabilize first, then address finishing.
Cost to Seal Foundation Crack vs. Structural Crack Repair Cost
Not every fissure needs reinforcement. The crucial distinction:
- Cost to seal foundation crack (water passage only): budget ~$1,500–$2,200 for a straightforward, accessible interior injection.
- Structural crack repair cost (movement present): plan for reinforcement hardware (straps/anchors, sometimes stitching). Localized stabilization projects commonly run $5,000–$20,000+, with extensive spans higher.
If you’re unsure, a brief inspection will show whether the line is only a water path or a symptom of capacity loss.
Epoxy Injection Foundation Crack Repair Cost (and When Polyurethane Wins)
Homeowners often ask about epoxy injection foundation crack repair cost because “epoxy” sounds stronger. Use the resin that fits the problem:
- Choose polyurethane for actively leaking seams and irregular gaps; it expands and remains slightly flexible.
- Choose epoxy when you want rigid bonding; pair with staples if the seam has widened.
Typical interior program for one seam: $1,500–$3,000.
If stitching/straps are included, the number shifts into the reinforcement ranges above. This is why epoxy injection crack repair cost varies from a simple seal to a hybrid structural repair.
Basement Floor Crack Repair Cost and Ceiling Crack Repair Cost
These two are often lumped into “foundation cracks,” but they’re different:
- Basement floor crack repair cost (slab): Hairline joints can often be routed and sealed at ~$700–$2,000. If the slab has settled or there are voids, lifting/void fill moves into several-thousand ranges depending on area and depth.
- Ceiling crack repair cost (drywall/plaster): That’s a finishing trade item and separate from foundation work—even if movement started at the foundation. Fix the source first; finish the ceiling after.
Staying clear on categories keeps quotes apples-to-apples.
House Foundation Crack Repair Cost — Real Toronto Scenarios (With Prices)
The examples below let you benchmark quickly. Read the scope first; then use the price to gauge your situation.
Scenario A — Single, leaking vertical seam after heavy rain
- Method: interior polyurethane injection; small finish patch.
- Expected budget: ~$1,500–$2,200.
- Notes: fastest path to a dry spot when there’s no structural concern.
Scenario B — Diagonal seam with slight seasonal widening
- Method: epoxy injection + a few carbon-fibre staples/stitches.
- Expected budget: ~$2,500–$4,500 depending on length and staple count.
- Notes: stops water and resists re-opening through seasonal cycles.
Scenario C — Horizontal line across a long panel; mild inward bow
- Method: carbon-fibre straps at set spacing, plus localized sealing.
- Expected budget: ~$7,500–$14,000 depending on span and hardware.
- Notes: treats the underlying lateral load, not just the wet spot.
Scenario D — Repeated leaks on the back wall; grading slopes toward the house
- Method: exterior excavation, repair, high-performance membrane, new drainage stone/pipe, regrade.
- Expected budget: from ~$15,000, scaling with wall length, depth, and access.
- Notes: durable fix when water is pushed against the wall nonstop.
If your home combines issues (e.g., a horizontal line and multiple verticals), expect a blended plan—and a blended budget.
Foundation Wall Crack Repair Cost — Quick Reference
Еtreat this as a benchmark, not a substitute for an inspection.
| Situation | Method | Typical Toronto/GTA Range |
| Leaking vertical seam (no movement) | Interior polyurethane/epoxy injection | $1,500–$3,000 |
| Horizontal line or mild bowing | Carbon-fibre straps or anchors + sealing | $7,500–$15,000+ |
| Recurring leaks from exterior sources | Exterior excavation + membrane + drainage | From ~$15,000 |
The biggest multipliers are access (finishes, tight rooms), length/depth of work, and reinforcement hardware.
What Changes the Cost to Fix Basement Wall Crack
These are the drivers behind every accurate quote in Toronto.
- Leak status: Live water requires different setup and resins; dry seams are faster.
- Length/width/branching: More ports and resin mean more time and materials.
- Access & finishes: Working behind cabinetry, near a furnace, or through finished walls adds careful open/close labour.
- Drainage context: Poor grading, short downspouts, or clogged weepers can make a “seal only” a short-term patch.
- Reinforcement needs: If the wall is moving, stabilization hardware (and sometimes engineering) becomes the primary scope.
Ask every contractor to itemize these in writing so quotes are truly comparable.
How Much to Fix a Crack in the Foundation When the Basement Is Finished
Even a simple injection costs more when we must protect, open, and restore finishes. Expect a modest uplift on the base injection price for demolition/protection/patching. Make sure the quote states exactly what will be opened and how it will be restored, so there are no surprises.
Getting a Precise, No-Surprises Number in Toronto
A dependable proposal will show:
- Diagnosis: water-only, movement, or both.
- Method: polyurethane vs. epoxy; port count; any staples/straps/anchors.
- Access/finishes: what will be opened and how it will be restored.
- Drainage corrections (if needed): grading, downspouts, weepers.
- Warranty & documentation: coverage terms; engineering if stabilization is specified.
With those items spelled out, the final invoice should match the scope delivered.
Ready for a Clear, Line-Item Quote from Leaquida Waterproofing?
Leaquida Waterproofing serves Toronto and the GTA with targeted interior injections, carbon-fibre reinforcement, and exterior waterproofing. Send a few photos, your neighbourhood, and when the leak appears. We’ll confirm whether you need a seal, stabilization, or exterior work, and provide a transparent proposal tailored to your home.
FAQ about Crack Repair Cost
For a single leaking vertical seam with decent access, plan $1,500–$3,000 for an interior injection. If the wall shows bowing or a horizontal line that needs reinforcement, expect ~$7,500–$15,000+. When exterior water is the root cause, excavation with membrane and new drainage typically starts around $15,000 and scales with wall length and access.
Prices depend on: crack type (vertical/diagonal/horizontal), active leak vs dry seam, length/width, access through finishes, site constraints outside (side yards, patios, trees), drainage condition, and whether reinforcement or engineering is required.
Add a modest uplift for protection, controlled demolition, and patching. Working behind cabinetry, stairs, or near a furnace increases labour. Ask every quote to itemize opening/closing finishes so you can compare fairly.
Vertical seams are often shrinkage-related and respond to injection, which is targeted and less disruptive (lower budget). A horizontal line can indicate lateral soil pressure and movement, so reinforcement (carbon-fibre straps or anchors) is added, increasing the investment.
Use polyurethane to stop active leaks; it expands to fill irregular paths. Use epoxy when you want a rigid bond and you may add staples/stitching. For one accessible seam, interior injection programs generally land $1,500–$3,000; stitching or straps move the number upward. That’s why published epoxy injection crack repair cost varies.
CLOGGED OR BROKEN WEEPING TILE