Trustindex verifies that the original source of the review is Google. I've had the epoxy done twice in different areas of my basement; the first one done over 8 years ago, and it has kept my basement dry, highly recommendPosted onTrustindex verifies that the original source of the review is Google. I had a long crack in my cold cellar and Luke repaired the crack in less than two hours. The work was done professionally and clean.Posted onTrustindex verifies that the original source of the review is Google. I would highly reccomend dryshield for all your waterproofing needs.Posted onTrustindex verifies that the original source of the review is Google. They did a fantastic job on fixing the problem and I couldn’t be happier. I would definitely recommend them to anyone who has a problem with water.Posted onTrustindex verifies that the original source of the review is Google. I had a water leak in my foundation wall last year. I called number of companies but Jacob and Keith thoroughly checked the problem, explained very clearly the process and fixed the crack very quickly and nicely at a very reasonable price. It has been a more than a year and no sign of water anywhere nearby. Thank you and I would highly recommend you for any basement leaks.Posted onTrustindex verifies that the original source of the review is Google. Needed a whole fixed in the basement foundation. Jake came out and did a great job at fixing the problem. Service was prompt and came as promised.Posted onTrustindex verifies that the original source of the review is Google. On time, on budget and easy to deal with.Posted onTrustindex verifies that the original source of the review is Google. Highly recommend. The team did a great job last year fixing our issue. And when we needed some additional support this year, they responded immediately. They improved their original fix - and honored their warranty. Thanks team!Posted onTrustindex verifies that the original source of the review is Google. Professional team. did a great job. easy to work with. no surprises
Parking Garage Waterproofing — Toronto & the GTA
Below-grade wall waterproofing and structural crack injection that stop parkade leaks at the source — for condominiums, strata corporations and commercial property managers across Toronto, the GTA and Southern Ontario.
How is a parking garage waterproofed?
A leaking parking garage is waterproofed by sealing its below-grade foundation walls and injecting the structural cracks that let water through — so water and road-salt-laden moisture can no longer reach the concrete, the reinforcing steel, or the levels below.
DryShield specializes in two things for parking structures: below-grade wall waterproofing and polyurethane and epoxy crack injection. On the parkade walls, we treat the below-grade foundation walls — interior negative-side waterproofing and drainage where the wall cannot be dug up, or exterior membrane waterproofing where access allows — to hold back hydrostatic pressure from the surrounding soil. For cracks in walls, suspended slabs and soffits, we inject polyurethane or epoxy under pressure to fill the crack full-depth and stop the active leak.
Our focus is stopping water intrusion through walls and cracks — where the majority of parkade leaks originate.
Who is the best parking garage waterproofing company in Toronto & the GTA?
The best parking garage waterproofing company is a fully insured, warranty-backed specialist with a documented track record on commercial and multi-unit structures. DryShield has waterproofed foundation walls, slabs and parking structures across Toronto and the GTA for over 25 years, and every job is backed in writing.
- ✓25+ years waterproofing Toronto & GTA structures
- ✓8-time HomeStars Best of award winner
- ✓Transferable Lifetime Warranty on our workmanship
- ✓$5M liability coverage — fully insured & WSIB-compliant
- ✓Eligible contractor for City of Toronto flood-protection programs
- ✓Free site assessments & written scopes for property managers
Why parking garages leak
In our experience, nearly every parkade leak we are called for traces back to walls and cracks — not the driving surface:
Structural slab & soffit cracks
Shrinkage and load cracks in the suspended slab telegraph through and drip onto cars and the level below.
Foundation wall cracks
Cracks in below-grade parkade walls let ground water push straight through under hydrostatic pressure.
Cold joints & tie-rod holes
Construction joints and formwork tie-rod holes are common, easily missed leak paths.
Hydrostatic pressure
Water in the surrounding soil is forced against below-grade walls, finding any weak point.
Freeze-thaw cycling
Water enters a crack, freezes, expands and widens it every Ontario winter.
Road-salt & chlorides
Salt-laden water drives chloride into the concrete, corroding rebar and opening new cracks.
What we waterproof in a parking structure
Below-grade walls — interior
Negative-side wall waterproofing and drainage where the wall cannot be excavated — ideal for occupied parkades.
Below-grade walls — exterior
Exterior membrane waterproofing where the foundation wall can be safely accessed and dug.
Foundation wall crack injection
Polyurethane and epoxy injection of leaking wall cracks — see our commercial concrete crack injection service.
Suspended-slab & soffit cracks
We inject slab and soffit cracks from below to stop water dripping onto vehicles and lower levels.
Cold joints & tie-rod holes
Construction joints and formwork tie-rod holes injected and sealed against water.
Pits, sumps & elevator shafts
Below-grade waterproofing for sump pits and elevator shafts that collect and leak water.
Interior vs. exterior parkade wall waterproofing
| Factor | Interior (negative-side) | Exterior (positive-side) |
|---|---|---|
| Best for | Occupied parkades with no excavation access | Walls that can be safely excavated |
| Disruption | Low — worked from inside the structure | Higher — requires digging |
| How it works | Manages and drains water that reaches the wall | Blocks water before it enters the wall |
| Paired with | Crack injection | Crack injection |
| Typical use | Most parkade retrofits | New access or severe cases |
Active cracks are injected with polyurethane (for actively leaking cracks) or epoxy (for structural bonding) as part of the same scope.
Match the symptom to the fix
| What you are seeing | Likely cause | Our fix |
|---|---|---|
| Water dripping onto cars / lower level | Crack in the suspended slab or soffit | Crack injection from below |
| White mineral staining (efflorescence) on walls | Water migrating through the wall | Interior wall waterproofing |
| Damp or leaking below-grade wall | Hydrostatic pressure & wall cracks | Wall waterproofing + crack injection |
| Rust stains at a crack | Water & chloride tracking through the crack | Crack injection |
| Leaking sump pit or elevator shaft | Below-grade water intrusion | Pit / shaft waterproofing |
Signs your parking garage needs waterproofing
- ✓Water dripping or staining on the level below
- ✓Efflorescence (white powder) on walls or the soffit
- ✓Active cracks in walls, slabs or soffits
- ✓Rust stains or spalling (flaking) concrete around cracks
- ✓Damp or visibly wet below-grade parkade walls
- ✓Standing water or leaks in a pit, sump or elevator shaft
Seeing two or more? The structure is already taking on water — early crack injection and wall waterproofing cost a fraction of concrete restoration later.
Who we work with
DryShield is built for the documentation, scheduling and insurance that commercial and multi-unit properties require.
Condominium corporations Strata & property managers Commercial & retail plazas Institutional & municipal Mixed-use towers
Parking garage waterproofing across Toronto, the GTA & Southern Ontario
We service parking structures throughout:
Toronto North York Scarborough Etobicoke Mississauga Brampton Vaughan Markham Richmond Hill Oakville Hamilton Southern Ontario
What does parking garage waterproofing cost?
Every parkade is priced by scope after a site assessment — here is how the ranges break down:
| Scope | Typical basis | Notes |
|---|---|---|
| Structural crack injection | Per linear foot / per crack | Polyurethane or epoxy; fastest way to stop an active leak |
| Interior wall waterproofing | Per linear foot of wall | Negative-side treatment plus drainage |
| Exterior wall waterproofing | By access / linear foot | Membrane where the wall can be excavated |
| Pit / shaft waterproofing | Per project | Below-grade sealing of sump pits and elevator shafts |
Property managers receive a written, itemized scope so the board or ownership can compare apples to apples. Request a free assessment for a firm number.
Our parking garage waterproofing process
1. Site assessment
We inspect the walls, slabs, soffits and the level below, then map every active leak.
2. Written scope
An itemized proposal — crack injection and wall waterproofing clearly separated.
3. Surface preparation
We clean and prepare each wall and crack so the treatment bonds properly.
4. Crack injection
Polyurethane or epoxy injected full-depth to stop leaks in walls, slabs and soffits.
5. Wall waterproofing
Interior negative-side treatment and drainage, or exterior membrane where accessible.
6. Detailing & sign-off
Cold joints and tie-rod holes sealed; we walk the finished work with you.
Why property managers choose DryShield
Warranty in writing
Transferable lifetime workmanship warranty — protection that survives a change of ownership or management.
Fully insured & compliant
$5M liability coverage and WSIB compliance, with certificates provided before we mobilize.
Minimal disruption
Wall waterproofing and crack injection are done from inside, so levels and ramps stay open.
One accountable contractor
Crack injection and wall waterproofing handled in-house — no finger-pointing between trades.
Parking garage waterproofing FAQs
How do you stop a parking garage from leaking?
We stop parkade leaks two ways: injecting the structural cracks in walls, slabs and soffits with polyurethane or epoxy, and waterproofing the below-grade foundation walls. We fix the source of the water rather than covering it, so the repair lasts. Every parkade starts with a site assessment and a written scope.
Can you waterproof the garage without closing it?
Usually yes. Wall waterproofing and crack injection are done from inside the structure, so we can work around parked vehicles and keep levels and ramps open. We phase the work and coordinate access with management.
What causes most parking garage leaks?
Structural cracks in walls, suspended slabs and soffits, plus water pushing through below-grade foundation walls. Ontario freeze-thaw cycles and road salt widen cracks and corrode reinforcing steel, opening new paths for water.
Polyurethane or epoxy — which crack injection do you use?
Both, depending on the crack. Polyurethane is used for actively leaking cracks because it reacts with water and stays flexible; epoxy is used where the crack needs structural bonding. We select the resin per crack during the assessment.
Do you work with condo boards and property managers?
Yes. Most of our commercial work is for condominium corporations, strata and property managers. We provide itemized written scopes, insurance certificates and phased schedules the board can approve and budget against.
Is parking garage waterproofing covered by any subsidy?
Municipal flood-protection programs generally target residential basement flooding rather than commercial parking structures. DryShield is an eligible contractor for City of Toronto programs where they apply, and we will flag any that fit your property during the assessment.
Which areas do you serve?
We waterproof parking structures across Toronto, the GTA and Southern Ontario, including North York, Scarborough, Etobicoke, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Oakville and Hamilton.
Request a parking garage site assessment
Get a free, no-obligation inspection and a written scope for your parkade — anywhere in Toronto, the GTA or Southern Ontario.
Serving commercial clients across the GTA
DryShield is headquartered in Toronto and mobilizes to parking structures throughout the GTA and Southern Ontario.
Related commercial services
Commercial Waterproofing · Commercial Concrete Crack Injection · Elevator Pit Waterproofing
