Foundation Crack Injection
Sealing a leaking crack in a poured concrete foundation from the inside by injecting it, priced per crack.
About $500–$1,500 per crack; one Ottawa source quotes from about $300 for epoxy (published Ontario contractor pricing, 2025–26; yours will differ).
Find a Waterproofing ContractorAbout Foundation Crack Injection
Crack injection fills a crack in a poured concrete foundation wall from the inside with an injected material such as epoxy or polyurethane (the two the Ottawa-area price pages list). Ask the contractor which material they use on your crack and why.
The City of Ottawa names cracks as one of the ways water gets in: snowmelt and heavy rain can leak through cracks or joints in basement walls and floors. The City's Compassionate Grant is not provided for basement flooding "due to a foundation crack or leaking window well", and the City advises sealing cracks in floors, walls and the foundation.
Neither of the City's permit lists names crack injection. "Structural foundation repairs" are on the permit list, so if the crack is part of a structural problem, ask the City whether the repair needs a permit before work starts.
Published Ontario contractor pages put crack injection at about $500 to $1,500 per crack; an Ottawa source quotes from about $300 for epoxy. Get the warranty terms in writing: what is covered, for how long, and whether they transfer to a buyer.
What This Work Covers
- Injection from inside, no excavation
- Material named in the quote (epoxy or polyurethane)
- Price per crack, length stated
- Warranty terms in writing
- Permit question asked first where the crack is structural
Popular For
What this work costs
Common questions about foundation crack injection
- Can a leaking foundation crack be injected from inside in Ottawa?
- How much is crack injection per crack in Nepean?
- Who should look at a crack that leaks every spring in Stittsville?
- Is a crack that leaks only in spring still a waterproofing job in Ottawa?
- Who decides if a foundation crack in Nepean is structural?
- Why is one Ottawa waterproofing quote higher than another for the same wall?
- Does the Ontario Building Code still apply to permit-exempt dampproofing?
- Can a waterproofing contractor in Orleans promise a dry basement?
Other Waterproofing Services
Exterior Foundation Waterproofing
Digging down the outside of the foundation to the footing and putting a membrane or coating on the wall, with new drain tile at the bottom where it is replaced.
Interior Drainage & Sump Systems
A drain channel cut in along the inside of the basement floor that carries seepage to a sump pit and pump, without digging outside.
Weeping Tile Replacement
Replacing the drain pipe at the base of the foundation that collects groundwater, laid to the Building Code's size and stone rules.
Sump Pumps & Battery Backup
New sump pits, pump replacement and battery backup pumps, with the City permit and the protective plumbing rebate in view.
Backwater Valves
A normally open valve on the sanitary or storm drain that closes when the sewer backs up, installed under a City permit as part of a flood plan.
Window Wells
New or replacement basement window wells, drained to the footing as the Building Code requires.
Structural Foundation Repair
Repairs to a foundation wall or footing that carries load, which the City lists as building permit work.
Ready to Get Started?
Tell us about your foundation crack injection job and we'll send it to local waterproofing contractors in Ottawa. They reply by email.