
Waterproofing — East York
Exterior Waterproofing
Full side wall excavated to the footing, foundation cleaned and sealed, dimple membrane installed over the wall and new weeping tile bedded in clear stone before backfill.
Waterproofing • Foundation Repairs • Drainage • Masonry
Serving Toronto & the Greater Toronto Area

Basement Waterproofing
We stop water at its source — sealing and protecting the foundation wall, restoring drainage and giving groundwater a controlled path away from your home.
Symptoms
Water rarely arrives all at once. Most homeowners notice a damp smell, a chalky white residue on the wall, a dark line along the floor edge after a storm, or paint and drywall that keeps failing in the same spot.
These are all signs that water is reaching the foundation and finding a way through. Identifying whether the entry point is a crack, a deteriorated wall, a failed drainage system or surface water determines which waterproofing method is appropriate.

Interior vs Exterior
Exterior waterproofing is the most thorough option. The foundation wall is excavated to the footing, cleaned, repaired and sealed, then covered with membrane. Weeping tile is replaced in clear stone and the grading is corrected on backfill. Water is stopped before it ever reaches the wall.
Interior waterproofing manages water that has already reached the foundation. A perimeter drainage system is installed inside the floor slab and directed to a sump pit and pump. It is the right approach where exterior access is limited by additions, driveways, decks or neighbouring structures.
Exterior Process
Work is staged wall by wall so the property stays usable. Landscaping and walkways are protected, excavated soil is contained, and the trench is kept open only as long as the repair requires.
On completion, the wall is sealed and membrane-protected, drainage is new, and the ground is restored and graded away from the house.

Interior Systems & Sump Pumps
Where excavation isn't practical, an interior drainage system collects water at the footing line and carries it to a sump pit, where it is pumped safely away from the foundation instead of rising against the slab.
We also look at whether a battery backup makes sense — most basement flooding happens during the storms that knock the power out.

Waterproofing Projects

Waterproofing — East York
Full side wall excavated to the footing, foundation cleaned and sealed, dimple membrane installed over the wall and new weeping tile bedded in clear stone before backfill.

Waterproofing — Toronto
Concrete floor cut back along the perimeter, new drainage pipe laid in clear stone and a sump pit installed on a seeping wall with no exterior access.

Waterproofing — Toronto
Narrow side yard excavated past the basement entry, wall parged and sealed, dimple membrane fastened the full height and new weeping tile with cleanout risers set in clear stone.
Know The Warning Signs
Water and foundation problems almost always show early warning signs. Catching them before finishes, framing or structure are affected keeps the repair smaller and less disruptive.
Concerned about something you're seeing?
Common Questions
Still unsure what applies to your home? Call us and describe what you're seeing.
Most basement leaks come from water collecting against the foundation with nowhere to go. Cracks in poured concrete, deteriorated mortar joints in block walls, failed or clogged weeping tile, downspouts discharging beside the wall and negative grading all allow water to build up. Once hydrostatic pressure develops, water is pushed through the smallest opening it can find. Identifying which of these is responsible is the difference between a repair that lasts and one that comes back.

Areas We Serve
We provide waterproofing, foundation, drainage and masonry services throughout the Greater Toronto Area. Most of our projects are still concentrated in Toronto proper — East York, North York, Leslieville and the surrounding neighbourhoods where we work most often.

If water is reaching your basement, the source can be identified and the appropriate waterproofing repair recommended.