Interior vs exterior: what's right for your home
- Interior drainage + sump: faster, less invasive, doesn't require digging up landscaping. Manages water once it enters.
- Exterior membrane + weeping tile: stops water at the wall. Requires excavation but solves the cause.
- Crack injection + drainage: hybrid for targeted leaks.
What we install
- Self-adhesive or peel-and-stick foundation membranes.
- Dimpled drainage board.
- New weeping tile (perforated drain pipe at footing).
- Interior perimeter drainage channel.
- Sealed sump basin and battery-backup sump pump.
Winnipeg cost for basement waterproofing
| Scope | Typical CAD |
|---|---|
| Sump pump install / replacement | $1,200 – $3,500 |
| Interior drainage system (full basement) | $6,000 – $18,000 |
| Exterior waterproofing + weeping tile (one wall) | $8,000 – $16,000 |
| Full-perimeter exterior waterproofing | $18,000 – $30,000+ |
Last updated: June 2026. Exact pricing requires an on-site assessment.
Common questions
I only get water in spring, do I really need waterproofing?
Spring melt is the worst loading event of the year for Winnipeg foundations. Recurring spring water means the gumbo at your footings is saturated every year, which is exactly the condition that bows walls and cracks foundations.