Ottawa Basement Waterproofing
Foundation Repair
Crack repair, wall stabilization and drainage for leaking, cracked or settling foundations across Ottawa.
Ottawa’s freeze-thaw winters and sensitive Champlain Sea “Leda” clay are hard on foundations: the soil swells when wet and shrinks as it dries, opening cracks and letting water in. We repair the full range of foundation problems, from a single leaking crack to bowing walls and settlement. We tell you honestly when a fix is cosmetic versus structural.
For leaking poured-concrete cracks we use foundation crack repair by injection and pair it with interior or exterior drainage where water management is the real issue. Where a wall is bowing or a footing has settled, the repair is structural. In Ottawa that work (excavation, underpinning or pier installation) needs engineered drawings and a building permit.
We only recommend structural work when the movement genuinely calls for it. We handle the permit and inspection when it does. For the City’s own guidance on when a permit is required, see Do I need a building permit? on ottawa.ca.
What this fixes
- Leaking vertical, diagonal or settlement cracks
- Bowing, leaning or shifting foundation walls
- Uneven floors or sticking doors from settlement
- Water entry through cracks and the cove joint
Wondering about price? Try our cost calculator or read ourHow Much Does Basement Waterproofing Cost in Ottawa? (2026 Guide).
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No-obligation inspection. We respond same day.
Where We Work
Foundation Repair across Ottawa
FAQ
Foundation Repair, FAQs
What causes foundation problems in Ottawa?
Most are driven by the region’s sensitive Champlain Sea “Leda” clay, which swells when wet and shrinks when dry, combined with 30-plus freeze-thaw cycles a year. That movement opens cracks, settles footings and pushes on foundation walls.
Do I need a permit for foundation repair in Ottawa?
Minor crack sealing and interior waterproofing generally do not, but structural work such as excavation, underpinning or pier installation requires engineered drawings and a City of Ottawa building permit. We handle the permit and inspection when your repair needs one.
Is a 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.
How much does foundation repair cost in Ottawa?
It varies widely: a single crack injection is a few hundred dollars, while structural underpinning runs into the thousands. We give a fixed quote after diagnosing the actual cause.
Get a free, no-pressure quote
We’ll diagnose the cause and tell you honestly whether foundation repair is the right fix.
Get My Free Quote or call (343) 504-1033