How much does basement waterproofing cost in Toronto?

Interior solutions like crack injection or a sump pump system typically run in the low thousands. Full exterior waterproofing, which involves excavating the foundation, adding a membrane and new weeping tile, costs significantly more since it involves digging, disposal, and landscaping repair afterward. Get quotes for both approaches if your basement issue allows it, since the right fix depends on where the water is actually coming from.

How often does a foundation need waterproofing?

A properly installed exterior membrane and weeping tile system is meant to last decades, often 25 years or more, though older clay tile systems can clog or crack over time. Interior fixes like crack injections can need revisiting if new cracks form elsewhere in the foundation, especially in houses with ongoing settling.

What should I expect during an exterior waterproofing job?

Expect excavation along the foundation wall down to the footing, removal or replacement of old weeping tile, application of a waterproof membrane, and backfilling. It's disruptive: landscaping, walkways, or fences near the foundation may need to come out temporarily, and the job can take anywhere from a few days to a couple of weeks depending on access and foundation length.

How do I judge if a waterproofing contractor did quality work?

Ask for photos during excavation showing the membrane and drainage layer before backfilling, since that's the part you can't inspect later. A quality job also includes proper grading away from the house afterward and a written warranty on both materials and labor, not just a verbal promise.

Waterproofing Service in toronto

Waterproofing Service in Greater Toronto Area

Toronto's clay-heavy soil, high water table in older neighborhoods, and freeze-thaw winters put a lot of stress on basements and foundations. Waterproofing covers the work that keeps water out of those spaces: exterior membrane and weeping tile installation, interior drainage systems tied into a sump pump, foundation crack injection, window well and window well drain fixes, and grading or downspout adjustments that keep water moving away from the house. Some of it is preventive, some is a direct response to a wet basement, efflorescence on the walls, or a musty smell that won't go away.

There are 72 waterproofing businesses listed in this category, ranging from small crack-injection specialists to larger crews that dig up the full perimeter of a foundation. Before hiring, ask whether the quote is for interior or exterior work, since they solve different problems and cost very differently. Get a clear scope of what's being excavated or opened up, what drainage layer or membrane product is used, whether a permit is needed for exterior digging, and what warranty covers the workmanship versus the material. Ask to see a recent job with similar soil conditions or house age, and get the warranty terms in writing before any deposit changes hands.

Our ranking weighs how each company handles licensing, warranty terms, response time, and verified customer feedback, so you can shortlist based on more than a sales pitch. See the ranked guide to Toronto renovation contractors for the full list, and check our methodology for how we score and verify each business.

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All waterproofing service in toronto, ranked by score and relevance

We found 77 businesses offering waterproofing service in toronto; 8 met the criteria for the scored directory. The order weighs each business's overall score by how much of its reviewed work is waterproofing service, so a lower-scored specialist can rank above a higher-scored generalist.

Direct Basement Waterproofing Toronto

5.0(134)✓ Google-verifiedPublishes prices

Storm damage, ongoing leaks, foundation cracks: reviewers describe Direct Waterproofing stopping water problems dead. Interior and exterior waterproofing work earns consistent five-star ratings from homeowners who credit named staff (Terry, Greg, Jack, Sergei, Vlodomir) for staying in touch, explaining options, and finishing on time or faster. Worksites stay clean, dust controlled, and minimal disruption to neighbours. No wet basements reported since completion. The business lists twelve service types on their website, from sump pump install ($560-$3500) to foundation crack repair ($1600-$3200 per crack). Licensed across Toronto, Mississauga, and surrounding areas since 1995 by their account. All 134 Google reviews are five-star, though review text is limited to recent months.

Emergency & Quick-Turnaround RepairsBasement Renovation & FinishingWater Damage Restoration Service

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Aquamaster Basement Waterproofing Toronto

4.9(268)✓ Google-verifiedPublishes prices

Aquamaster's team earns consistent praise for arriving on schedule, diagnosing problems accurately, and explaining solutions plainly before work begins. Staff members like Peter, Yurii, Anthony, and David take care to show customers what's wrong-often revealing moisture building up slowly behind walls that could worsen-and leave job sites clean and organized. Multiple reviewers report that interior and exterior waterproofing systems have stayed dry through heavy rain months or years after completion, with basements breathing easier and no recurrence of mold concerns. Prices start from $80 per linear foot for interior work and $100 per linear foot for exterior; foundation crack repair and window wells vary widely. One cancellation complaint exists, but does not reflect the pattern evident across 268 reviews.

Emergency & Quick-Turnaround RepairsHome Additions & Second StoreysBasement Renovation & Finishing

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All Painting Toronto

5.0(252)✓ Google-verified

All 252 reviews are five-star, with recent clients consistently naming Edy and his team for fast response, clear updates, and walls that look "flawless" and "new." They handle interior condo repaints, exterior work (siding, brick, front doors), popcorn removal, and wall repairs; they also fix DIY disasters and work through weather delays to finish on schedule. Pricing is called "reasonable" and "very reasonable" by multiple reviewers, and they leave job sites tidy. The business operates across the Greater Toronto Area from Old Toronto, claiming over 20 years in the field. Reviewers name Edy (owner) and painter Dede, often citing their ability to handle last-minute calls, suggest colors, adapt when issues arise, and deliver results that look professionally finished. No complaints appear in recent reviews.

Kitchen RenovationEmergency & Quick-Turnaround RepairsHome Additions & Second Storeys

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IcyReno Waterproofing & Underpinning Leslieville

5.0(20)✓ Google-verifiedPublishes prices

All 20 reviews are five-star. Customers consistently praise waterproofing and underpinning work completed with clear explanations and reliable follow-through, leaving them with lasting peace of mind about their basements. IcyReno handles interior and exterior waterproofing, underpinning, drain repair, and concrete flooring. The team communicates progress throughout, shows respect for properties, and delivers results that exceed expectations. No complaints surface across the review set.

Water Damage Restoration ServiceWaterproofing ServiceFlooring Contractor

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Eastern Western Construction Design & Build Toronto

5.0(66)✓ Google-verified

Reviewers consistently report flawless project execution: teams handle design, permits, and builds end-to-end, stay on budget and timeline, and communicate updates regularly. Yiannis and his crew are named repeatedly for honesty, problem-solving, and attentiveness to detail across kitchens, bathrooms, basements, and multi-storey additions. Work spans attic insulation through custom homes, with high-quality finishes and materials praised in every scope. Clients value fair pricing, clean worksites, and willingness to guide homeowners on later DIY stages or handle unforeseen issues without surprise costs.

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FoundationGuard Inc.

5.0(35)✓ Google-verified

FoundationGuard delivers basement underpinning and waterproofing with the speed and precision owners need. Loren and his team respond fast, explain the work clearly, and hit their timelines and budgets consistently. The business handles interior and exterior waterproofing, foundation cracks, and basement lowering across Toronto and surrounding areas. Reviewers from the Beaches to the Annex to Lawrence Park praise the crew's attention to detail, willingness to walk owners through unfamiliar processes, and ability to work alongside other trades without disruption.

Emergency & Quick-Turnaround RepairsWaterproofing ServiceFlooring Contractor

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64 low data

CJ Drain & Plumbing (Toronto)

5.0(4)✓ Google-verified

All four reviews are five-star, citing fast response, clear diagnosis, and reasonable costs. Staff like Jimmy and Ricardo treated customers with respect and handled emergencies well, from sewage backups to urgent fixture repairs.

Emergency & Quick-Turnaround RepairsDrainage ServiceFlooring Contractor

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GTA Restoration Corp.

3.8(25)✓ Google-verified

When the crew shows up, they work fast and know their trade: basement floods cleared in hours, mold removed properly, burst pipes fixed with precision. But reviewers warn the office frequently bills two to three times the initial quote, charges travel time without warning, and leaves customers confused about what labour and equipment actually cost. A few mention language barriers with crews. The pattern is clear: strong fieldwork undermined by billing surprises and poor upfront communication.

Kitchen RenovationEmergency & Quick-Turnaround RepairsBasement Renovation & Finishing

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Common questions about waterproofing service

How much does basement waterproofing cost in Toronto?: Interior solutions like crack injection or a sump pump system typically run in the low thousands. Full exterior waterproofing, which involves excavating the foundation, adding a membrane and new weeping tile, costs significantly more since it involves digging, disposal, and landscaping repair afterward. Get quotes for both approaches if your basement issue allows it, since the right fix depends on where the water is actually coming from.
How often does a foundation need waterproofing?: A properly installed exterior membrane and weeping tile system is meant to last decades, often 25 years or more, though older clay tile systems can clog or crack over time. Interior fixes like crack injections can need revisiting if new cracks form elsewhere in the foundation, especially in houses with ongoing settling.
What should I expect during an exterior waterproofing job?: Expect excavation along the foundation wall down to the footing, removal or replacement of old weeping tile, application of a waterproof membrane, and backfilling. It's disruptive: landscaping, walkways, or fences near the foundation may need to come out temporarily, and the job can take anywhere from a few days to a couple of weeks depending on access and foundation length.
How do I judge if a waterproofing contractor did quality work?: Ask for photos during excavation showing the membrane and drainage layer before backfilling, since that's the part you can't inspect later. A quality job also includes proper grading away from the house afterward and a written warranty on both materials and labor, not just a verbal promise.