Ottawa Basement Waterproofing
Foundation Crack Repair
Polyurethane and epoxy crack injection that seals leaking poured-concrete cracks against water under pressure.
When a poured-concrete foundation develops a crack that leaks, crack injection is the fast, low-cost fix. We inject polyurethane or epoxy resin that fills the crack through its full depth and seals it against water under pressure, usually in a single visit, with no excavation.
Polyurethane stays flexible, so it tolerates the small seasonal movement common in Ottawa homes as clay soils swell and shrink. Epoxy is used where the crack is structural and the wall needs to be re-bonded. We choose based on what we find.
Injection is the most common repair we do in newer suburbs like Barrhaven, where settling backfill around a young foundation opens hairline cracks that weep during heavy rain. It is one of the sealing methods we cover in our guide to foundation sealing in Ottawa.
What this fixes
- Leaking vertical or diagonal cracks in poured walls
- Settlement cracks in newer-build foundations
- Cove-joint and tie-rod-hole leaks
- Quick fixes that avoid excavation
Wondering about price? Try our cost calculator or read ourHow Much Does Basement Waterproofing Cost in Ottawa? (2026 Guide).
Get Your Free Waterproofing Quote
No-obligation inspection. We respond same day.
Where We Work
Foundation Crack Repair across Ottawa
FAQ
Foundation Crack Repair, FAQs
How long does foundation crack repair take?
A leaking poured-concrete crack is usually sealed by injection in a single visit, with no excavation. We inject resin that fills the crack through its full depth and seals it against water under pressure.
Polyurethane or epoxy injection, which do you use?
Polyurethane stays flexible, so it tolerates the small seasonal movement common in Ottawa as clay soils swell and shrink. Epoxy is used where the crack is structural and the wall needs to be re-bonded. We choose based on what we find.
Is a leaking foundation crack serious?
Many hairline cracks are routine settlement and only need sealing to stop water. Cracks that are widening, horizontal or stair-stepped can signal structural movement. We assess which type you have during the free inspection.
Will the crack come back after it’s injected?
A flexible polyurethane injection moves with the concrete through Ottawa’s seasonal freeze-thaw, so a properly sealed crack should stay sealed. If new ground movement opens a fresh crack elsewhere, that is a separate repair, which is why we diagnose the cause, not just the symptom.
Get a free, no-pressure quote
We’ll diagnose the cause and tell you honestly whether foundation crack repair is the right fix.
Get My Free Quote or call (343) 504-1033