Two-storey brick home at dusk in the rain, with eavestroughs and a downspout carrying water away from the foundation

Waterproofing · Drainage · Eavestroughs

Keep water where it belongs — outside.

Most wet basements start outside: at the eavestrough, the grading or the drains. We trace the water from the roofline to the sewer line, then fix the cause.

Find Your Leak Book A Water Assessment

RooflineEavestroughs, downspouts and ice dams

GroundGrading, window wells and weeping tile

BelowFoundation, sump and backwater valve

The water path

Nine places water gets into a Canadian basement

Select a number on the cross-section to see how water gets in at that point and what usually fixes it.

Cross-section of a house in a rainstorm showing the roof, eavestrough, downspout, grading, window well, foundation wall with a crack, weeping tile, sump pit and backwater valve

Roofline & eaves

Usual fix

Ice dams explained

What we do

Three systems, one goal: a dry basement

Waterproofing, drainage and eavestroughs work as one system. Fixing one while another is failing just moves the leak.

Excavated foundation wall with black waterproof membrane, dimpled drainage board and new weeping tile in clean gravel

Basement Waterproofing

Exterior membranes, interior drainage systems and crack injection — chosen for the foundation type and the water source.

Waterproofing

Sump pit with a submersible pump, check valve, discharge pipe and battery backup unit in a basement

Drainage, Sump & Backwater

Weeping tile, sump pumps with battery backup, backwater valves, window wells and grading.

Drainage

White aluminum eavestrough fitted with a micro-mesh guard, with autumn maple leaves resting on top

Eavestroughs & Guards

Seamless 5- and 6-inch aluminum, guards, downspouts and ice-dam advice.

Eavestroughs

Canadian seasons

Every season stresses a different part of the system

Spring thaw and summer storms load the drains; fall leaves and winter ice attack the roofline.

Mar – May

Spring thaw

Test the sump pump and alarm
Check window wells for melt water
Extend downspouts before the thaw

Jun – Aug

Summer storms

Confirm the backwater valve closes freely
Clear floor drains
Top up settled soil at the foundation

Sep – Nov

Fall leaves

Clean eavestroughs after leaf drop
Check guards and outlets
Book exterior work before freeze-up

Dec – Feb

Winter ice

Watch for icicles and ice dams
Keep downspout exits clear of ice
Keep snow piles away from the walls

Waterproofing contractor reviewing an itemized flood-protection quote with a homeowner at a kitchen table

Flood subsidies

Your city may help pay for flood protection

Many Canadian municipalities offer subsidies for backwater valves, sump pumps and disconnecting drains from the sewer. Toronto’s program, for example, was expanded in 2026 to up to $6,650 per eligible property.

Permits and inspections arranged where required
Itemized invoices for your application
Program rules checked before work starts

How subsidies work

Quick answers

Before you call anyone

Three things worth knowing about wet basements.

Does every wet basement need excavation?

No. Many leaks trace back to eavestroughs, downspouts, grading or a single crack. Exterior excavation is the right answer when the weeping tile has failed or water pressure affects whole walls.

Is water from the floor drain a waterproofing problem?

Usually not. Water rising from a floor drain during a storm is typically a sewer backup, which a backwater valve is designed to stop.

Can damp walls just be condensation?

Yes. Humid summer air condensing on cool concrete can look like a leak. A moisture test tells the difference before money is spent.

Not sure where the water is coming from?

A water assessment traces it from the roofline to the sewer line before anyone quotes a fix.

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