Foundation crack repair cost in Hamilton, 2026.

How much does it cost to fix a cracked foundation?

Here are typical market ranges for common crack repairs in the Hamilton area in 2026, before tax.

Typical Hamilton-area market ranges before tax, drawn from 2026 Ontario price guides and published contractor rates. Your price comes from a written quote.

What's included in crack injection

1. 01

   Inspect and clean

   We confirm the crack is the source of the water, check its width and direction, and clean the surface along its length.

2. 02

   Set ports and seal the surface

   Small injection ports go in along the crack, and the face of the crack is sealed so the resin stays inside the wall.

3. 03

   Inject

   Polyurethane or epoxy is pumped in until it fills the crack through the full thickness of the wall.

4. 04

   Finish

   Ports come off and the surface is dressed. Most single cracks are done in one visit.

What usually isn't included: removing and replacing drywall, framing or finishes in a finished basement. If the crack is behind a finished wall, ask how much will be opened and who puts it back.

Polyurethane or epoxy: which one are you paying for?

Both are injected the same way, and on a typical crack they cost about the same. The choice comes down to what the crack needs.

Polyurethane reacts and expands as it cures, pushing into every part of the crack and staying slightly flexible. That makes it the usual choice for leaking cracks that aren't structural, because it keeps sealing out water even if the wall shifts a hair with the seasons.

Epoxy cures hard and bonds the two sides of the crack back into one piece. It's used where the wall needs its strength restored, and it's paired with carbon fibre staples when a crack is moving, so it can't open again. That combination is what pushes a repair into the $1,000 to $3,000 per crack range.

If a contractor recommends epoxy for a simple leak, or polyurethane for a crack that's clearly structural, ask why. The right material is part of the right repair.

Crack in your foundation? What moves the repair cost

• Number and length of cracks. One short crack is a fixed-price job. Several long ones take more material and time.
• Material. Polyurethane seals out water; epoxy bonds the wall. Structural cracks need epoxy plus staples.
• Finished walls. Getting to a crack behind drywall, panelling or built-ins adds work.
• An active leak. A crack that's running water when we arrive can need extra steps before it will take resin.
• The cause. A crack from settlement or soil pressure needs the cause fixed first, which is a different job with a different price.
• Inside or outside. Interior injection needs no digging. Exterior repair means excavating to the crack, which is why it costs more.

Cheap fix or bigger problem? Reading the crack

Most cracks in poured concrete basement walls are shrinkage cracks. Tarion's construction guidelines say plainly that concrete walls naturally crack during curing, and they treat poured-wall cracks over 6 mm as unacceptable in new homes, along with block-wall cracks over 2 mm.

Home inspector guidance points to a few patterns that need more than injection: cracks a quarter inch wide or wider, horizontal cracks caused by pressure from outside, diagonal cracks that are wider at the bottom, which suggest settlement, and stair-step cracks through block mortar. Read how to read a crack in your basement wall for the full rundown.

Why a cheap patch costs more

A surface patch, whether it's hydraulic cement, caulking or a coat of sealer, closes the face of the wall but not the crack behind it. The National Research Council's guidance on basement walls explains why that matters: water held in the soil outside builds up pressure and forces its way through joints and cracks. It goes around a surface patch and keeps coming.

Injection fills the crack through the full thickness of the wall, so there's no path left for the water. That's why it costs more than a tube of sealant, and why it lasts.

Interior or exterior crack repair?

For most leaking cracks in poured walls, interior injection is the right call. There's no digging, the yard stays intact, and it's usually a same-day job. Exterior repair makes sense when the inside of the wall can't be reached, or when the whole wall is being waterproofed from outside anyway.

If several walls are leaking, or the water is coming through the wall rather than one crack, crack repair isn't the answer at all. That's a waterproofing job, and our interior vs exterior waterproofing guide explains the options.

When a crack is under warranty

If your home is less than two years old, Tarion's warranty covers water getting in through the basement or foundation walls. Its guidelines say foundation walls shall allow no water penetration, though only actual trickling leakage is covered, not dampness. Major cracks in basement walls are covered under the seven-year major structural defect warranty.

Report it to your builder in writing first, with photos and dates. Once a warranty has run out, the repair is yours to arrange.

Getting an accurate price

Most single cracks are a fixed-price job, and a good photo goes a long way. Text a photo of the crack to (289) 880-7988, ideally with a coin or tape measure beside it for scale, and we'll usually confirm the price before anyone comes out. For anything bigger, we'll come out, look properly and give you a written, fixed quote. See basement foundation crack repair for how we do it.

• One photo of the whole crack, top to bottom, so we can see its direction.
• A close-up of the widest point, with a coin or tape measure beside it.
• Where it is: which wall, and whether it's poured concrete, block or stone.
• Whether it leaks, and when: every rain, only in the spring, or only in a big storm.
• Anything in the way: finished walls, shelving, a furnace or a deck outside.

Crack repair cost questions

How Basement Worx fixes cracks

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