Basement waterproofing is the structural process of preventing water intrusion into a building’s foundation caused by hydrostatic pressure and soil saturation. In Toronto, this process requires specialized protection against heavy clay soil and seasonal freeze-thaw cycles. Effective local systems combine exterior excavation (to expose and seal the foundation walls) with interior drainage solutions like weeping tiles, sump pumps, and backwater valves that meet the Ontario Building Code.
The 3 Core Waterproofing Methods for Toronto Homes:
Exterior Waterproofing: Excavating the foundation to apply a waterproof membrane and replace the weeping tile system.
Interior Water Management: Installing an internal drainage channel (French drain) and sump pump to capture rising groundwater.
Crack Injection: Sealing foundation cracks caused by thermal expansion, or movement of the foundation while settling.
The Do’s and Don’ts of Interior WaterproofingIt becomes imperative to waterproof your house for longevity and healthy integrity. Without interior waterproofing, the structure may give up – thanks to water and foundation leakage.
















































