Stop Repeat Leaks—Make Repairs Last
Pair proportional foundation repair Toronto with exterior drainage and membranes so crack repairs hold up through inspection and after closing.
Why leaking basements come back (and how we stop the cycle)
Most leaks aren’t one-off events. They’re the result of water paths that keep finding the same weak spots: hairline cracks, cold joints, or seams near the footing. A quick patch may silence the symptom for a season, but without drainage and membrane protection, water pressure builds again and the problem returns.
At SDM, we treat structure and moisture as one system. We start with a measured diagnosis, choose a proportional repair (from foundation crack repair Toronto injections to localized structural work), and pair it with the right protection so your fix performs through spring thaws and summer storms—not just on the day of inspection.
Serving: Toronto & the Greater Toronto Area (Toronto, North York, Scarborough, Etobicoke, Mississauga, Brampton, Vaughan, Richmond Hill, Markham, Oakville, Burlington, Pickering, Ajax, Whitby, Oshawa, Milton, Halton Hills, Newmarket, Aurora).
What “proportional repair + protection” means
We avoid blanket solutions. Instead, we grade the defect and match it to the lightest effective method, then add the minimum viable protection so the fix lasts.
- Tier A – Non-structural: Targeted epoxy/polyurethane injection for tight, non-moving cracks, paired with simple water management (downspout extension, grading correction, or localized interior detail) if pressure is present.
- Tier B – Structural/localized movement: Small-area excavation, reinforcement or rebuild, and exterior waterproofing (primer, membrane, protection board). Backfilled with drainage stone and tied into a reliable discharge.
- Tier C – Settlement/height objectives: Staged underpinning, column/beam corrections, redesigned drainage, and often a new insulated slab. Chosen when you need stabilization or plan to finish space.
This approach controls cost, shortens timelines, and reduces the risk of repeat leaks that can derail a sale or soak new finishes.
Our inspection-ready process
Step 1 — Measure, photograph, and grade
We record crack locations, moisture patterns, elevations, and access constraints. You’ll see a quick A/B/C tier placement with before photos.
Step 2 — Present side-by-side scopes
Within the tier, you get two views where appropriate:
- Repair-only: the minimum correction to pass inspection.
- Repair + protection: structural fix plus drainage/membrane to prevent recurrence.
Each option lists inclusions, exclusions, and a milestone calendar so you can plan around conditions or renovation schedules.
Step 3 — Execute methodically
- Injection: prep → inject → cure → cosmetic finish.
- Excavation/reinforcement: trench safely, correct structure, apply membrane, install drains in stone, and backfill cleanly.
- Underpinning: dig in pins, pour in stages, coordinate inspections, and restore the slab as specified.
Step 4 — Moisture control that fits your property
- Exterior drainage tile to sump or daylight discharge with filter fabric and washed stone.
- Membrane + protection board so the wall isn’t exposed to wet soils again.
- Interior weeping tile when exterior access is limited, with cove-joint detailing.
- Grading/downspout corrections to keep surface water away from the wall.
Step 5 — Document for confidence
You receive a folder with dated photos, product/spec sheets, and a short scope letter. That file calms buyers, appraisers, and future inspectors.
When injection is enough—and when it isn’t
Injection is appropriate when a crack is tight, the wall isn’t moving, and water entry is limited to that path. We use the right resin for the material and the moisture conditions, drill at controlled spacing, and monitor cure time. If hydrostatic pressure is driving water under the slab or through the cove joint, we’ll recommend localized drainage so the injection isn’t fighting physics.
Injection is not enough when cracks are widening, stepping, or tied to displaced blocks. In those cases, the proportional choice is a small excavation + reinforcement with exterior membrane—a clean, defensible repair that reads well in any inspection report.
Exterior waterproofing—what “protection” actually includes
“Waterproofing” means different things on different quotes. Here’s what we standardize when exterior access is available:
- Primer + self-adhered membrane for continuous coverage
- Protection board to shield the membrane during backfill
- Drainage tile set beside the footing in washed stone
- Filter fabric to reduce clogging over time
- Positive discharge to sump or daylight—never a mystery hole
- Backfill that keeps fines out of the drainage layer
- Grading reset so water moves away from the wall
Each element earns its keep by reducing pressure on the wall and giving water a predictable path away from the structure.
Interior waterproofing—when access is tight
Row homes, narrow side yards, or finished landscaping can make exterior work impractical. We design interior systems to manage pressure from below:
- Weeping tile at the footing to a sump with back-up options
- Vapor barrier and cove-joint detail to protect finishes
- Clean discharge routing with noise and freezing in mind
Interior systems aren’t a shortcut—they’re a designed response to constraints. When documented correctly, they pass inspections and keep basements dry.
Cost clarity you can plan around
Rather than a single number, we provide ranges with drivers, then fix those drivers through design. Typical variables:
- Crack count/length and whether displacement exists
- Access for excavation and spoil removal
- Reinforcement requirements and depth to footing
- Membrane type and protection board selection
- Drainage length and discharge options (to sump or daylight)
- Engineering/permits for structural scopes
- Slab replacement if underpinning or interior drainage is included
We bill by milestone: structural stage complete → waterproofing/drainage installed → backfill/site reset → slab (if specified) → final documentation. Cash flow matches progress.
Permit path & inspections—kept simple
Not every basement crack repair Toronto requires a permit. Structural alterations, underpinning, new entrances, or significant rebuilding typically do. We manage:
- Feasibility notes and defect grading
- Engineer drawings where structure is involved
- Permit submission (Toronto & GTA municipalities)
- Inspection cadence booked to match milestones
- Close-out package with drawings, photos, and spec sheets
This end-to-end handling keeps schedules predictable and inspection days uneventful.
For sellers under a conditional offer
You need a repair that holds after closing and reads cleanly in disclosures. We shape scopes that make sense to buyers and their inspectors:
- Proportional methods—no overkill, no corner-cutting
- Moisture plan so the remedy doesn’t repeat
- Photo logs tied to dates and milestones
- One-page scope letter summarizing cause, remedy, and protection
Agents tell us this format shortens back-and-forth and helps remove conditions on time.
For homeowners staying put
You want a basement that’s dry, warm, and durable. We design the fix around daily life:
- Dust control and clear “quiet vs. noisy” days on the schedule
- Protection of existing finishes and utilities
- Practical recommendations for flooring and insulation after the repair
- Maintenance notes so systems (like the sump) are checked easily
Good structure and good comfort go together when the water is managed.
Case-style snapshots
Localized leak, East York
Thin vertical crack behind stored boxes. We performed epoxy injection, extended downspouts, and reset grading. Two years of follow-ups: no recurrence. Documentation went into the household records for future sale.
Recurring seepage, Scarborough
Water at a cold joint after heavy rain. Exterior access was tight, so we installed interior weeping tile to a sump with back-up, plus crack injection at one seam. The family finished with luxury vinyl plank over an insulated subfloor; the area has stayed dry.
Stair-step crack, Etobicoke
Widening steps at the back corner with pooling near the wall. We completed localized excavation & reinforcement, applied membrane + protection board, and laid new drainage tile in stone tied to a daylight discharge. The homeowner listed six months later with our photo log and scope letter included.
FAQs
We plan access carefully and backfill with stone for performance. Where exterior is impractical, we design an interior system that still manages pressure and passes inspection.
If the wall is stable and the water path is limited to the crack, injection is durable—especially when minor grading/downspout fixes are completed. If movement or broader water paths exist, we’ll recommend targeted exterior correction.
For suitable crack conditions and designed moisture control, we provide straightforward warranty terms and include them in your documentation pack.
No. Underpinning is correct when settlement is active or when you’re gaining height for finished space. When localized work will solve the problem, we recommend the simpler scope.
Inspections and appraisals favor repairs that are proportional, well documented, and paired with protection. Your folder will include drawings (if any), photos, and spec sheets to support valuation.
What your close-out folder includes
- Dated photo log by milestone
- Scope letter summarizing cause, remedy, and protection
- Product/spec sheets for membranes, protection board, drainage tile, sump
- Engineer drawings/inspection notes for structural scopes
- Maintenance notes (e.g., sump test schedule)
This is the file you or your agent can present with confidence during diligence
The SDM way—why repairs last
- Diagnosis before demo. We measure and grade the defect so the method fits the problem.
- Protection by design. Exterior waterproofing Toronto standards or interior systems manage pressure, not just symptoms.
- Transparent scheduling. Milestones and inspections planned at the start.
- Documentation by default. Every step is photographed and recorded so the repair story is clear.
Ready to stop repeat leaks?
Contact SDM
Phone: (647) 460-7014
Email: dusankocko@yahoo.com
Website: sdmcontractor.ca
Address: 218-31 St Dennis Dr, Toronto, ON M3C 1G8
Serving: Toronto & the Greater Toronto Area
Talk through your specific leak or inspection note. We’ll provide a tiered plan—from foundation crack repair Toronto injection through structural correction—with a moisture strategy that keeps basements dry and deals moving.