Basement waterproofing in Southwestern Ontario

Southwestern Ontario’s subsurface is shaped by glacial till and lake-plain deposits: you will see plastic clays in some London and Woodstock areas, sandier zones toward Windsor, and shallow bedrock or dense till that changes how water moves seasonally.

Many cities here have strong inventories of post-war bungalows and split-levels with original footing drains at end-of-life. Industrial conversions and older walk-outs can hide buried window wells or reverse grades that only show up after heavy rain.

When reviewing quotes, ask how the contractor verifies the water source (surface vs hydrostatic), whether they video-scope perimeter drains when accessible, and how they sequence exterior digs near gas, hydro, and shared easements.