Basement waterproofing services

Six repairs, each aimed at a different way water enters a basement. The table below matches what you see to the repair that deals with it.

Symptom to repair

What you see, and what fixes it

What you see	The repair
Water along the base of a wall	Interior waterproofing
A wall damp from top to bottom, white powder, peeling paint	Exterior waterproofing
One crack that gets wet when it rains	Foundation crack repair
Water rising through the floor	Sump pump
Water from the floor drain, shower or toilet during a storm	Backwater valve
Leaks only in spring thaw or after days of rain, on several walls	Weeping tile replacement
Water below a basement window	Window well drain

All services

A drain under the floor edge collects the water and a sump pump sends it outside.

The wall is dug out to the footing, sealed with a membrane and given a new drain.

Polyurethane injected through the full thickness of a poured concrete wall.

A pit, a pump, a check valve and a backup that runs when the power is out.

A one-way valve on the sewer line that stops the city sewer backing up into the house.

Replacement of a clogged or collapsed foundation drain, and drains for window wells.

Not sure?

A house can have a leaking crack and a tired sump pump at the same time. The assessment lists every issue found and which ones are worth fixing now.