Open 24/7 · Open 24 hours, 7 days a week
Basement Waterproofing
in Toronto
Wet basement? We fix leaking walls, damp floors, and foundation cracks for Toronto homeowners. Interior and exterior systems, sump pumps, backwater valves, and crack repair. Free inspection, written quote.
Serving Toronto, East York, The Danforth, The Beaches, Leslieville, Riverdale & Woodbine Heights.
24/7
Emergency response
Free
Inspection & quote
15+
Years in Toronto
$6,650
Max city subsidy
Signs of a water problem
Is your basement telling you something?
Most basement waterproofing problems in Toronto show up long before you see standing water. Catch these signs early and the fix is usually simpler and less expensive.
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Damp walls
Walls that feel cold and damp, or show dark patches, are letting moisture through.
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White chalky residue
A powdery white stain on concrete (efflorescence) means water is moving through the wall.
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Musty smell
A persistent earthy smell is a sign of moisture and mold risk in the basement.
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Cracks in the wall
Vertical, diagonal, or hairline cracks can let water in and may widen over time.
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Water after heavy rain
Puddles or wet floors after a storm usually point to a foundation or drainage problem.
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Sump pump running constantly
A pump that never stops may mean groundwater is overwhelming an old or failed system.
Seeing any of these? A free inspection tells you exactly where the water is coming in and what it takes to stop it.
Call (647) 556-2391Our services
Basement waterproofing services in Toronto
From a single leaking crack to a full exterior perimeter, we handle the basement waterproofing work Toronto homes need.
Interior Waterproofing
An interior perimeter drainage system collects water that seeps through foundation walls and routes it to a sump pump.
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Exterior Waterproofing
Excavation around the foundation, a waterproof membrane on the walls, and new weeping tile at the footing stop water at the outside.
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Foundation Crack Repair
Injection repair seals cracks in poured concrete walls from the inside, stopping active leaks without excavation.
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Sump Pump Installation
A sump pump collects water from interior drainage and lifts it outside, away from your foundation.
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Backwater Valve Installation
A backwater valve lets sewage flow out but closes automatically when the city main backs up, protecting your basement.
Learn more Weeping Tile Replacement
Old clay or clogged weeping tile is replaced with modern perforated pipe wrapped in filter fabric to move water away from the footing.
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Basement Leak Repair
We investigate where basement water is entering and match the repair to the source, from foundation cracks to drainage problems.
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Basement Underpinning & Lowering
Underpinning lowers a basement floor to add ceiling height, paired with waterproofing so the deeper floor stays dry.
Learn moreHow it works
Five simple steps from leak to dry
No pressure, no surprise costs. Here is what happens from your first call to a finished job.
Call or book
Call us or fill out the form. We answer 24/7.
Free inspection
We come out, find the water source, and explain it.
Written quote
You get a fixed, written price for the work.
Work done
We complete the waterproofing to the agreed scope.
Clean-up
We clean up and leave your basement ready to use.
- 1
Call or book
Call us or fill out the form. We answer 24/7.
- 2
Free inspection
We come out, find the water source, and explain it.
- 3
Written quote
You get a fixed, written price for the work.
- 4
Work done
We complete the waterproofing to the agreed scope.
- 5
Clean-up
We clean up and leave your basement ready to use.
Save with the City of Toronto
Toronto Basement Flooding Protection Subsidy
The City of Toronto covers up to 80% of the invoiced cost for eligible work — including backwater valves, sump pumps, and pipe severance — for work completed on or after November 12, 2025. The maximum is $6,650 per property.
Program rules are set by the City of Toronto and can change. Check toronto.ca for current eligibility before booking.
See the rebate details Areas we serve
Basement waterproofing across Toronto
We work in older Toronto neighborhoods where foundation age, clay weeping tile, and city storm backups all show up as basement water problems.
Basement Waterproofing East York
Common basement problems in East York and the services that fix them.
View areaBasement Waterproofing The Danforth
Common basement problems in The Danforth and the services that fix them.
View areaBasement Waterproofing The Beaches
Common basement problems in The Beaches and the services that fix them.
View areaBasement Waterproofing Leslieville
Common basement problems in Leslieville and the services that fix them.
View areaBasement Waterproofing Riverdale
Common basement problems in Riverdale and the services that fix them.
View areaBasement Waterproofing Woodbine Heights
Common basement problems in Woodbine Heights and the services that fix them.
View areaFAQ
Common questions about basement waterproofing in Toronto
How much does basement waterproofing cost in Toronto?
It depends on the work. Interior drainage runs about $8,000–$15,000, a full exterior perimeter about $15,000–$35,000, and crack injection about $450–$1,100 per crack. You get the exact price after a free inspection.
Interior or exterior waterproofing — which do I need?
Interior systems manage water that gets past the walls and are less disruptive. Exterior waterproofing stops water at the wall and is the right call for persistent leaks. We tell you which fits your home after the inspection.
Is there a Toronto rebate for waterproofing work?
Yes. The City of Toronto offers a basement flooding protection subsidy that covers up to 80% of eligible work. See our Toronto rebate page for the current details.
Do you take emergency calls?
Yes. We are open 24 hours, 7 days a week. Call (647) 556-2391 any time.
Free inspection
Book your free basement inspection
Tell us what you are seeing. We will come out, find where the water is coming in, and give you a written quote. No charge, no pressure.
- (647) 556-2391 — Open 24 hours, 7 days a week
- 2638 Danforth Ave, Toronto, ON M4C 1L7
Our work
Real waterproofing and drainage work
See excavation, waterproof coatings, drainage installation, and interior membrane systems in real jobsite photographs.
Wet basement? Book a free inspection
Open 24/7 · Open 24 hours, 7 days a week