Foundation wall repair & waterproofing
Water in the basement is a symptom. The wall is the problem.
Ottawa's most common basement leak is not a floor problem — it's a compromised wall. Cracks, cold joints, and seal failures in the foundation wall allow water to bypass the floor and enter through the wall face itself. Our repair method: We excavate to the footing, remove compromised concrete and waterproofing, restore the wall with permanent structural repairs, and reinstall a complete drainage system. Water is then diverted away from the foundation entirely — not trapped or temporarily blocked.
Signs you need this
What you are probably seeing
- Water tracking down a basement wall after heavy rain or spring melt
- A vertical or diagonal crack that keeps getting wider
- Efflorescence — white chalky staining on the block or concrete
- Damp, musty smell that never fully clears
- Floor cracks, sticking doors or a wall that bows inward
What is included
What the job involves
- Free on-site assessment with photos of what we find
- Excavation to the footing and full wall cleaning
- Crack injection or structural repair as the wall requires
- Membrane, drainage board and weeping-tile check
- Backfill, grading and site cleanup
Questions
Foundation Wall Repair — asked and answered
Can this be fixed from inside the basement?
Interior sealing is temporary mitigation. If the waterproofing outside has failed, interior work treats the symptom, not the cause. We distinguish between interior injection (symptom management, ~$1,500–$3,500) and exterior wall repair (structural fix, ~$8,000–$25,000+) before you spend anything.
How long does a typical foundation repair take?
A single-crack exterior repair is usually one to two days on site. A full wall section takes longer and depends on access, depth and weather.
Will my landscaping survive?
We protect what we can and put the ground back graded away from the house. Plants and interlock directly over the dig are at risk — we will tell you exactly what is in the way before we start.
Other things we do
Concrete crack & surface repair
Cracked steps, spalling walls, sunken slabs and failed joints repaired to last through Ottawa freeze-thaw.
Window & door openings in concrete
New egress windows, walkout doors and enlarged openings cut into existing foundation walls.
Mold remediation
Mold removed, the surface treated, and the moisture source it grew on actually fixed.
Get it looked at before the next freeze
A free on-site assessment takes about thirty minutes and costs you nothing. You will know what is wrong, whether it needs doing now, and what it costs.