Exterior Waterproofing.
The fix the basement actually needed.
What we do
Stop water before it reaches the basement.
Foundation membrane, crack sealing, grading correction and drainage. The fix the basement actually needed. We excavate to the footing, apply waterproof membrane, install weeping tile, and backfill with clean gravel. We address the root cause, not just the symptom.
Most basement leaks are caused by failed or non-existent exterior waterproofing. Interior solutions manage the water after it's already inside. We stop it from getting in.
Why it lasts
The layers that keep your foundation dry.
Full excavation to footing
Expose the entire foundation wall from grade to footing. No partial measures.
Membrane & drainage board
Waterproof membrane applied to the full wall, plus drainage board to direct water downward.
Weeping tile replacement
New perforated pipe at the footing, wrapped in filter fabric, bedded in clear gravel.
Grade correction
Backfill and final grade sloped away from the foundation for positive drainage.
Recent work
Foundations we've sealed and protected.
Foundation waterproofing
Oshawa · 2024
Backfill & membrane install
Durham Region · 2026
Drainage board & weeping tile
Durham Region · 2026
Completed foundation repair
Durham Region · 2026
Foundation excavation
Durham Region · 2026
Common questions
Waterproofing FAQ
Interior systems manage water after it's already inside. Exterior waterproofing stops water at the foundation wall before it enters. We always recommend addressing the root cause from the outside.
A typical residential job takes 3 to 5 days: excavation, membrane application, weeping tile, backfill, and grade correction. Weather can extend the timeline.
Yes, we excavate along the foundation wall. We backfill and re-grade after, and can coordinate sod or garden restoration as part of the same project.
