Google
“We had water entering a garage stairwell after every thaw. CWC documented the leak path, separated the membrane repair from the concrete work, and gave us a board-ready scope without drama.”
Waterproofing Projects Across the GTA
Exterior membranes, interior drainage, parking garage coatings, crack injection, balcony repairs, and emergency leak control across the GTA. Browse by scope to get a sense of how we approach similar conditions before you book a site review.
Garage & PodiumToronto
Condo Parking Garage Membrane Renewal
A downtown condo garage had slab leaks, salt staining, and owner concern about assessment costs. The scope included crack routing, localized concrete repair, traffic coating replacement, drain detailing, and phased parking closures so the board had a practical plan.
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FoundationMississauga
Exterior Foundation Excavation & Membrane
A commercial lower level beside a paved service lane leaked after heavy rain. Crews excavated to footing, repaired wall defects, installed membrane and drainage board, reviewed weeping tile, and restored the access lane with clean staging.
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Leak RepairVaughan
Elevator Pit Leak Repair
Water was collecting in a commercial elevator pit after storms. The repair was coordinated with the elevator contractor and included active leak injection, joint treatment, cementitious waterproofing, and photo notes for the property file.
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Interior & DrainageNorth York
Interior Basement Drainage System
An occupied mixed-use building had water entering at the floor-wall joint. The interior perimeter was opened in phases, drainage was tied to a sump basin, and the slab was restored with dust control and daily clean-up.
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Leak RepairScarborough
Active Foundation Crack Injection
A foundation crack leaked during wind-driven rain in a managed building. The wall was opened locally, injected with polyurethane, monitored for seepage, and documented with notes on grading and roof-water discharge.
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Balcony & EnvelopeOakville
Terrace Membrane & Drain Detailing
A terrace leak was showing up in the unit below. The scope included removing failed coating, repairing cracks, improving drain details, installing a liquid-applied membrane, and setting clear cure-time expectations for management.
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Interior & DrainageBrampton
Sump Pump and Interior Drainage Upgrade
A multi-unit property had a sump pump cycling constantly during spring thaw. The system was upgraded with a new basin, primary pump, battery backup, high-water alarm, and corrected discharge routing.
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FoundationMarkham
Blindside Below-Grade Waterproofing
A zero-lot-line below-grade addition required pre-applied waterproofing before concrete placement. The work included seam detailing, tieback treatment, waterstop coordination, and pre-pour photo documentation for the GC.
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EmergencyEtobicoke
After-Hours Emergency Leak Response
An active leak near a mechanical room needed after-hours triage. The crew diverted water, documented conditions, completed temporary control, and returned with a permanent foundation repair scope.
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Balcony & EnvelopeRichmond Hill
Building Envelope Sealant Replacement
Wind-driven rain entered through aging facade joints. Failed sealant was removed, joints were cleaned and backed, compatible sealant was installed, and elevations were prioritized for future maintenance.
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Leak RepairBurlington
Garage Concrete Restoration Before Coating
Overhead spalls and delaminated slab areas were repaired before a new waterproofing coating was applied. The work separated concrete quantities from membrane pricing so the board could approve the scope with less guesswork.
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FoundationPickering
Foundation Waterproofing for Multi-Unit Property
A multi-unit foundation wall leaked during lake-effect storms. Crews excavated a straight run, repaired cracks, installed membrane and drainage board, and restored the work area with clean staging.
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Balcony & EnvelopeWhitby
Balcony Coating and Crack Repair
Multiple balcony slabs had cracked coatings and small leaks at slab edges. The scope included surface preparation, crack repair, trafficable coating, and management notices for cure time.
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Interior & DrainageMilton
New-Build Drainage Correction
A newer commercial unit had water returning to the foundation because discharge and grading were working against the building. Drainage was corrected, sump discharge was rerouted, and the foundation wall was locally repaired.
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Garage & PodiumHamilton
Podium Deck Waterproofing
An occupied podium deck had failed coating around drains and transitions. The repair included concrete preparation, membrane replacement, drain detailing, and staged access to keep the building operational.
View related service →Seeing a similar leak path on your building? Send photos for a free assessment or call 1 (888) 702-2022.
Client Reviews
What Building Teams Say About the Work
Notes from GTA waterproofing jobs — garage coatings, foundation membranes, drainage fixes, crack injection, and emergency water control.
5.0
Rated by GTA property teams
Google
“We had water entering a garage stairwell after every thaw. CWC documented the leak path, separated the membrane repair from the concrete work, and gave us a board-ready scope without drama.”
Have a project coming up? Call 1 (888) 702-2022 or send photos for a free leak assessment.
Need Help Stopping a Building Leak?
Free waterproofing assessments for Toronto and the GTA. Call anytime for active water entry.