Basement & Foundation Waterproofing in Scarborough
Built for Bluffs weather, ravine lots, and clay soils.
From Birch Cliff bungalows near the lake to family homes around Agincourt, Scarborough foundations face lake-effect rain, freeze–thaw, and clay that holds water against the wall. We install the right fix for your house—an exterior membrane with dimple board and new weeping tile, or an interior drain channel to a sealed sump when digging outside isn’t the best option. You’ll get firm pricing, step-by-step photos, and a 5-Year Workmanship Warranty.
24/7 Emergency Service
Fully Licensed & Insured
Guaranteed Satisfaction
Rated 5 Stars by Homeowners
Scarborough Basement Waterproofing & Leak Repair
South of Kingston Road, wind off the lake drives water into the Bluffs; inland, clay soils and settling grades push moisture to the footing. Many 1950s/60s basements still rely on clay-tile weepers that have collapsed or filled with sediment. We start with a camera/moisture check, then recommend a targeted approach: exterior membrane + dimple board with a new footing drain, or an interior drain to a sealed sump (with battery backup available). We also handle epoxy/urethane crack injection and backwater valve upgrades for storm surges.
Common early clues in Scarborough include salty white staining (efflorescence), damp lines along the floor-wall joint after rain, window-well spillovers on below-grade windows, and a sump that never seems to rest.
Our Waterproofing Services in Scarborough
Practical systems for Bluffs, ravine, and infill lots
Clean, code-compliant installs—exterior or interior—with dust control, tidy trenching, photo documentation, and a 5-Year Workmanship Warranty.
.jpg)
.jpg)
How We Waterproof Scarborough Basements
Inspect → Plan → Install (Exterior or Interior) → Photo Proof → Warranty
Locate & Excavate
Footing Drainage (Weeping Tile)
New perforated weeping tile is set at the footing, wrapped in filter fabric and gravel, and tied to a safe discharge or sump—relieving hydrostatic pressure that forces water through weak points.
We identify where water is entering, then safely excavate along the affected wall down to the footing, keeping the trench neat and protected. Toronto’s freeze-thaw and clay-rich soils can drive leaks, so exposing the problem area lets us treat it properly.
Waterproof the Wall
The foundation is cleaned and primed, then coated with a rubberized waterproofing membrane and covered with dimple drainage board to direct water away from the wall
Backfill, Grade & Verify
We backfill in layers, restore grading away from the house, then perform a function/flow check and review photos with you. Where needed, we recommend a sump pump for extra protection and leave you with our 5-Year Workmanship Warranty.
What Is Basement Waterproofing?
Waterproofing keeps groundwater from crossing your foundation. In Scarborough the clay and silt hold moisture at the wall and spring thaws and lake storms raise pressure at the footing. We use two main methods. Exterior waterproofing adds a rubber membrane on the wall, dimple board, and new weeping tile to move water away before it reaches the wall. Interior waterproofing collects water inside with a perimeter drain and sends it to a sealed sump pump. This is useful when yards are tight or you want to protect landscaping. For single leaks we use crack injection with epoxy or urethane. Every job includes photo proof and a 5 Year Workmanship Warranty.
Basement Leak Issues We See Around Scarborough
Damp walls or musty smells – Early indicators of hidden moisture. Catching this early prevents bigger damage.
Water at the floor–wall seam after rain – Classic sign of hydrostatic pressure or poor drainage pushing water at the footing.
Visible cracks in foundation walls or floors – Water follows cracks; freeze–thaw cycles can widen them over time.
Window-well overflow – Below-grade windows leak when the well has no drain or clogged gravel—fix with a well drain to the weeper + cover.
Sump pump runs nonstop or fails - Needs diagnostics, check-valve verification, and often battery backup to ride out power outages.
Pooling water near the foundation - Downspouts, grading, or hardscaping pushing water toward the house—common in urban lots.
Efflorescence (white salts) & peeling paint - Surface clues that water is wicking through masonry.
Mould growth in damp corners - Moisture problem that needs source control, not just cleaning.
When to Call the Experts
Problems you shouldn’t ignore
Damp lines near the floor, a musty smell, white powder on the wall, water sitting in window-wells, or a sump that won’t stop are early warnings—book an inspection before damage spreads.
Fixes that don’t work
Paints and roll on sealers do not stop outside water. Chemicals do not repair a clogged or broken weeping tile. The right solution comes after inspection. Exterior membrane with dimple board. Interior drain to a sealed sump. Crack injection. Or a new footing drain where the old clay tile has failed.
Simple prevention
Point downspouts away from the house. Keep soil sloping away from the wall. Clear window well drains. Test your sump pump and add a battery backup. We will give you a clear plan and a firm price.
Why Scarborough Homeowners Choose DrainPro
Local crew with clean work and straight quotes. We install both exterior and interior systems. We show photo proof. We back our work with a 5 Year Workmanship Warranty.
Fast, Reliable Scheduling
Same-day waterproofing inspections in most cities and 24/7 help when water is active. Crews arrive prepped to protect landscaping and finishes.
Upfront, Flat-Rate Quotes
You’ll always know what to expect. No hidden fees, no surprise hourly billing just honest, upfront quotes for every job.
.png)
Exterior & Interior Specialists
We recommend the right method for your home: exterior membrane, weeping tile replacement, interior drain tile to a sealed sump, or crack injection—not a one-size-fits-all fix.
Clean, Protected Job Sites
Dust control inside, tidy trenches outside, daily debris haul-away, and surfaces restored. Your home stays livable while we work.
.png)
Proof You Can See
Before/after photos, optional water test, and a function check of the sump pump and check valve so you know the system works.
5-Year Workmanship Warranty
Clear coverage on our waterproofing installations plus a simple maintenance checklist to keep everything performing.
Areas We Serve in Scarborough
We work across Scarborough from the Bluffs to neighbourhoods near the 401. We tailor systems to lot lines, soil, and house age. We keep sites clean. We provide photo proof. Eligible work includes a 5 Year Workmanship Warranty.
Related Services in Scarborough
Protect your home end to end with coordinated drain and plumbing work
.webp)
Customer Reviews
Clean sites, clear communication, dry basements
Scarborough homeowners rate us for tidy work and results that last
Frequently Asked Questions
Do not wait for the next Bluffs storm. Book a Scarborough waterproofing inspection today. You will get a clear plan, a firm price, and photo proof of the work.