Foundation Drainage in Montreal — Protect Your Home from the Ground Up
Your foundation is only as strong as the drainage around it. Nael Construction provides complete foundation drainage solutions across Montreal — from weeping tile replacement to crack repair and waterproofing. Get a free foundation assessment.
Foundation Drainage Services
- Weeping tile (French drain) installation: Perforated pipe around your foundation footing that collects groundwater and redirects it away. Essential for homes with basements. Cost: $8,000–$20,000 full perimeter.
- Foundation crack repair: Epoxy or polyurethane injection seals cracks from the inside. Stops active leaks immediately. Cost: $400–$800 per crack.
- Exterior waterproofing: Excavation, membrane application, drainage board, and gravel backfill. The most comprehensive solution. Cost: $8,000–$20,000.
- Parging repair: Cosmetic and protective cement coating on above-grade foundation walls. Prevents water penetration through small surface cracks. Cost: $1,500–$4,000.
Foundation Crack Types & What They Mean
- Vertical cracks: Most common. Caused by concrete shrinkage during curing. Usually not structural but can leak. Fix: epoxy injection.
- Horizontal cracks: SERIOUS. Caused by hydrostatic pressure from saturated soil pushing against the wall. Can indicate structural failure. Fix: may require wall reinforcement or replacement — get professional assessment immediately.
- Stair-step cracks: Follow mortar joints in block foundations. Caused by settling or lateral pressure. Fix: depends on severity — may need reinforcement.
- Diagonal cracks: Often caused by differential settling. Monitor for growth. Fix: epoxy injection if stable; structural repair if growing.
Foundation Drainage Costs (2026)
- Weeping tile — full perimeter: $8,000–$20,000
- Weeping tile — partial: $3,000–$7,000 per side
- Crack injection (epoxy): $400–$800 per crack
- Crack injection (polyurethane): $500–$1,000 per crack (better for active leaks)
- Exterior waterproofing: $8,000–$20,000
- Parging: $1,500–$4,000
- Wall reinforcement (carbon fibre): $5,000–$15,000
FAQ: Foundation Drainage
How do I know if my foundation drainage is failing?
Signs include: water in the basement, efflorescence on walls, musty odours, cracks that are growing, or pooling water near the foundation after rain. A professional assessment can confirm.
Can foundation cracks be fixed from the inside?
Yes — epoxy and polyurethane injection are done from the inside and are highly effective for non-structural cracks. However, they don’t address the root cause (poor exterior drainage). For long-term protection, exterior waterproofing is recommended.
Is foundation drainage covered by home insurance?
Typically not. Most policies cover sudden water damage (burst pipe) but exclude groundwater seepage and foundation repair. Proper drainage is a maintenance responsibility — and a wise investment.
Get a Free Foundation Assessment
Nael Construction has been protecting Montreal foundations for 10+ years. RBQ-licensed, fully insured. Contact us for a free on-site evaluation.
Related: French Drain Installation | Basement Waterproofing | Basement Finishing