Basement Waterproofing in Scarborough

It depends on the entry point. If water is coming through the foundation wall or floor, that's a waterproofing issue. If it's entering through windows or doors, it may be a grading and drainage issue. We identify the actual entry point first.

Interior crack injection for a single crack runs $500 to $1,500. Full perimeter interior drainage systems typically run $5,000-$15,000 depending on basement size. We provide written quotes after inspection.

Yes. When the failure mode requires exterior membrane application, we excavate, apply a proper waterproofing system, install drainage board, and backfill. This is the gold-standard repair for persistent foundation leaks.

Yes. We waterproof underground parking structures including traffic membranes, joint systems, and crack repairs.

Yes. Our waterproofing warranties are written, transferable, and clearly explained before work begins.

For a straightforward vertical crack, we inject polyurethane or epoxy resin directly into the crack from the interior, which seals it against water without excavation. For cracks tied to hydrostatic pressure from a high water table near the Rouge River valley, we may recommend exterior membrane work instead, the repair method depends on why the crack formed, not just what it looks like.

Hairline cracks from normal concrete curing are common in the postwar bungalows and split-levels that make up most of Scarborough's housing stock, and usually aren't a concern on their own. Cracks that are wider than a dime, actively leaking, or growing over time point to a structural or drainage issue that needs a proper assessment.

Usually not for gradual settlement cracks, which insurers treat as a maintenance issue. Sudden cracking tied to a specific event, a burst municipal water main, a flood, or unusual ground movement, has a better chance of coverage. We document crack condition and probable cause so you have something concrete to bring to your insurer.

A sump pump sits in a pit at the lowest point of your basement floor and pumps groundwater that collects there out and away from the foundation before it can rise and flood the space. It's the standard defence for Scarborough homes in lower-lying areas near the Rouge River where the water table sits close to the surface.

The sump pump connects to your weeping tile, the perforated pipe that runs around the foundation footing, so groundwater is collected and routed into the pit rather than pressing against the foundation wall. In older Scarborough homes without functioning weeping tile, we sometimes need to install an interior drainage channel alongside the pump for it to work properly.

A quality sump pump generally lasts 7-10 years with normal use, though units running constantly in low-lying Scarborough properties near the Rouge River tend toward the shorter end of that range. We recommend a battery backup regardless of age, since pump failure during a power outage in a storm is when basements actually flood.