Cost guides › Foundation crack repair
Canada
Foundation crack repair cost
Sealing 1 non-structural foundation wall crack(s) with polyurethane injection typically costs $890 before GST/HST, with most jobs between $700 and $1,150. Epoxy injection comes in around $590, while reinforcing a crack with carbon-fibre straps runs about $1,900. These figures are for cracks up to about 3 m long in walls that are not moving.
Most homeowners pay
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Cost by region
| Location | Basic | Mid-range | Premium |
|---|---|---|---|
| Alberta | $600 | $920 | $1,950 |
| Quebec | $590 | $910 | $1,950 |
| Manitoba | $580 | $880 | $1,900 |
| British Columbia | $570 | $870 | $1,850 |
| Newfoundland and Labrador | $570 | $870 | $1,900 |
| Ontario | $570 | $870 | $1,850 |
| Saskatchewan | $550 | $850 | $1,850 |
| New Brunswick | $510 | $790 | $1,750 |
| Nova Scotia | $500 | $780 | $1,750 |
What's included
Mid-range
- Cleaning and preparing the crack on the interior face of the wall
- Setting injection ports along the crack and sealing the surface
- Low-pressure polyurethane injection through the wall
- Removing ports and finishing the surface
- Materials: resin, ports and surface seal for each crack
What affects the cost
Epoxy or polyurethane
Epoxy bonds the two sides of a crack back together and is the choice for dry, stable cracks where strength matters. Polyurethane foams and stays flexible, so it is better for cracks that leak water or open and close slightly with freeze-thaw cycles. Both are injected from inside the basement in poured concrete walls.
Carbon-fibre straps
Carbon-fibre straps are bonded across the crack with epoxy to stop a wall from moving further, which is why the premium tier costs more per crack. They are meant for walls with minor inward movement and should be specified by an engineer; they do not straighten a wall that has already bowed a lot.
When you need an engineer
Horizontal cracks, stair-step cracks in block walls, cracks wider at one end than the other, walls bowing inward or cracks with one side offset point to structural movement, often from frost or soil pressure. Have a structural engineer look before any injection, because piers or wall anchors may be needed and are not in these figures.
Length and wall type
Price rises with the length of each crack and the number of ports. Injection works on poured concrete; concrete block, stone or rubble foundations in older homes crack and leak differently and often need a different repair.
Access inside the basement
Finished walls, shelving, a furnace or water heater in front of a crack have to be moved or opened up before work starts, which adds time that a quote may not include.
The source of the water
A leaking crack is often a symptom of water pooling against the foundation, especially during spring thaw. Fixing downspouts and grading reduces the pressure on the wall and makes the repair last.
How to save
- Mark every crack and have them all quoted in one visit; the setup cost is shared.
- Extend downspouts and correct grading so water drains away from the wall before you inject.
- Use polyurethane for leaking but stable cracks and save carbon-fibre reinforcement for walls an engineer says need it.
- Photograph and date cracks, with a pencil mark at each end, so you can show whether they are growing.
Grants, tax and rules
Permits
Sealing a crack is usually treated as a repair, while structural work such as piers or wall anchors usually needs a building permit. Ask your municipality if you are unsure.
GST/HST
GST/HST applies to renovation work. Our figures are before GST/HST (for example 13% HST in Ontario, 5% GST in Alberta).
Frequently asked questions
How much does it cost to fix a foundation crack in Canada?
Sealing 1 non-structural crack(s) with polyurethane injection costs about $890 before GST/HST. Epoxy injection is around $590, and adding carbon-fibre reinforcement brings it to about $1,900.
Epoxy or polyurethane: which is better?
Epoxy restores strength across a dry, stable crack. Polyurethane seals a crack that is leaking or may move slightly with the seasons. Many contractors choose based on whether water is coming through.
Are vertical foundation cracks normal?
Thin vertical cracks in poured concrete walls are commonly caused by shrinkage as the concrete cures and are usually not structural. Seal them if they leak, and watch for widening.
When is a foundation crack serious?
Horizontal cracks, stair-step cracks in block, cracks wider at one end, bowing walls or one side of the crack sitting proud of the other suggest movement. Call a structural engineer before paying for injection.
Can cracks be injected in winter?
Interior injection can be done year-round in a heated basement. It is often easiest to see which cracks leak during spring thaw, so many homeowners have them assessed then.
Do carbon-fibre straps really work?
They are used to stop further inward movement of walls that have moved only slightly, when installed to an engineer's design. Walls that have bowed significantly need other methods such as wall anchors or bracing.
How this estimate is calculated
Work hours: 3.5 · Labour: $510 · Materials: $384
Sources: Job Bank wages (Employment and Social Development Canada); Regione Toscana, Prezzario dei Lavori 2026 (CC BY 4.0); ECB exchange rates.