Basement Waterproofing

FIND THE CAUSE Leaks can come from poor grading, downspouts, foundation cracks, high groundwater or sewer backup. The fix depends on the cause. COMMON SOLUTIONS • EXTERIOR WATERPROOFING — excavating and applying a membrane with new weeping tile. • INTERIOR WATERPROOFING — an interior drainage system leading to a sump pump. • CRACK REPAIR — injecting foundation cracks. • BACKWATER VALVE — helps protect against sewer backup. Toronto's Basement Flooding Protection Subsidy Program may help with some protective devices — check eligibility first.