YTZ Basement Waterproofing Toronto
Exterior Basement Waterproofing Toronto
Excavation around the foundation, a waterproof membrane on the walls, and new weeping tile at the footing stop water at the outside.
Open 24/7 · Open 24 hours, 7 days a week
What is exterior waterproofing?
Exterior basement waterproofing stops water before it reaches the foundation wall. The work normally includes exposing the wall to the footing, cleaning and repairing the concrete, applying a waterproof coating, replacing drainage at the footing, and restoring the excavated area.
Toronto homes vary widely in access, foundation type, grading, and existing drainage. An inspection is needed to determine whether one wall, a corner, or a larger perimeter needs attention. The uploaded photographs on this site show the excavation and coating stages without presenting them as a before-and-after claim.
Signs you need exterior waterproofing
Persistent damp foundation walls
Dark patches, staining, or repeated seepage can point to failed exterior protection.
Water after rain
Storm-related seepage may indicate poor drainage or a compromised wall coating.
Old waterproofing
Older tar coatings can crack and lose contact with the foundation wall.
Leaking finished basement
Persistent moisture should be investigated before new finishes hide the source.
Our process
- 1. Expose
Excavate to the footing with safe access planning.
- 2. Prepare
Clean the wall and address visible cracks or defects.
- 3. Protect
Apply waterproof coating and install drainage materials at the footing.
- 4. Restore
Backfill and leave the work area tidy.
What does it cost?
A full exterior perimeter in Toronto typically runs about $15,000–$35,000 depending on depth, access, and landscaping. Partial-wall jobs cost less. Exact price after a free inspection.
Get my free quoteExterior Waterproofing FAQ
Do you have to dig up my whole yard?
For a full perimeter job, yes. For a single leaking wall we can excavate just that section. We discuss access, landscaping, and what gets restored before we start.
Exterior vs interior — which do I need?
Exterior stops water at the wall; interior manages water that gets past it. Exterior is usually the right call for persistent wall leaks, while interior is less disruptive and less expensive.
Is a permit required for exterior waterproofing?
Exterior excavation often requires a permit depending on scope and the municipality. We confirm permit requirements for your property during the inspection.
Related services
Weeping Tile Replacement
Old clay or clogged weeping tile is replaced with modern perforated pipe wrapped in filter fabric to move water away from the footing.
Foundation Crack Repair
Injection repair seals cracks in poured concrete walls from the inside, stopping active leaks without excavation.
Toronto Flooding Rebate →
See if your work is eligible for up to 80% back from the City of Toronto.
Wet basement? Book a free inspection
Open 24/7 · Open 24 hours, 7 days a week