Why GTA basements flood
Most basement floods in the GTA come from one of four places: storm water overwhelming the sewers and backing up through floor drains, groundwater pushing through foundation walls and floors, surface water running in through window wells and doors, or a sump pump that fails when it's needed most.
The source matters. Clean groundwater can often be dried in place. Water that came up through a floor drain may be mixed with sewage, which means porous materials like carpet, underpad and drywall have to come out. We identify the source first, because it decides the scope.
Fix the damage and the cause
While the basement is open, it's the best time to add protection. Many GTA cities pay part of the cost of a backwater valve, sump pump or downspout disconnection. We price each one as a separate line so you can see exactly what it costs and what the rebate gives back.