Leaky BasementRepair Toronto
Leaky Basement Repair Toronto
A leaky basement rarely has one simple cause: it could be a foundation crack, a failing cove joint, or hydrostatic pressure building against your walls. Aquatech’s basement leak repair Toronto homeowners trust starts with a proper diagnosis, not a guess, so the fix actually addresses the source instead of masking the symptom. Using professional-grade materials and proven repair techniques, we restore your basement to dry and protected, backed by a lifetime warranty. Contact Aquatech today for a free, itemized assessment of your leak.
How Much Does It Cost To Fix A Leaky Basement In Toronto?
The cost depends entirely on what’s causing the leak. A single foundation crack repair typically runs $400 to $800, while a full drainage fix ranges from $69 to $190 per linear foot for interior waterproofing, or $90 to $280 per linear foot if exterior waterproofing is needed. Most basement leak repairs fall somewhere in this range rather than requiring a full waterproofing overhaul, a proper inspection determines exactly what your basement needs, so you’re never paying for more than the problem requires. Contact Aquatech for a free, itemized quote.
Aquatech, Trusted for Over 30 Years
What Our Clients Have to Say
Basement Waterproofing Testimonials
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Rated 5 out of 5 starsIgor and Anatolia installed a new sump pump and interior waterproofing after a basement flood. The crew worked efficiently, kept the area clean, and finished on schedule. Professional, knowledgeable, and fairly priced—would absolutely recommend.
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Rated 5 out of 5 starsVlad’s crew worked diligently and professionally to waterproof our foundation. They made sure everything was tidy and clean when they were done. Everything was very good from the beginning communication to get the quote until the very end. We highly recommend this company.
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Rated 5 out of 5 starsJust had our house waterpoofed by Aquatech – fabulous job! They did exactly what was outlined to us … no surprises, which was wonderful. The workers on site, Igor and Anatoly, were amazing, very professional and detailed oriented. We had a couple of things that were out of the scope of the project and Igor went over and above resolving all issues beyond our expectations. In all, a very professional job and they tidied up after themselves – highly recommend!!
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Rated 5 out of 5 starsAlex and crew just finished. They were quick and left no mess afterwards. Time will tell how the exterior waterproofing holds up but I’m hoping it’s good now!
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Rated 5 out of 5 starsAlex & Alex dud an amazing job. Prompt, hard workers and kept everything as clean as possible. Looks great .than you.
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Rated 5 out of 5 starsMy basement sump pump room wall just below my outside stairs and veranda were wet when we had more than 1 inch of rain. I called Aquatech Basement Waterproofing, and assigned Eric to meet me and assessed the work to be done and provided a very reasonable quote, and the work was scheduled to meet my schedule. There were 2 crews of 2 men all from Ukraine, all very knowledgeable, professional and did a wonderful job. They protected the flooring from the my main doorway right down to the basement room where the work was being done. The first 2 man crew removed the Styrofoam from that was on the basement walls and ceiling, moved my battery backup sump pump and moved to a safe locatiion while working in a small area. They broke the concrete floor around the room down to the footings, which needed to be to add weeping tile. They cleaned the area as they worked, removed the concrete debris and then brought in the required material to install weeping tile. The second crew assisted with the installation of the waterproof membrane on the walls, install the weeping tile and cementing of the part of the floor where the weeping tile was installed and added to the sump pump basin. They reinstalled the light and light switch, wall plug outlet. This all was done in a few hours. I would highly recommend Aquatech as their staff are very knowledgeable and very efficient in doing their job. I would definitely use them again if I have any future for any basement Waterproofing, or water issues. Thank you so very much Dianne P. The were very professional s advised that I ca Eric came by promptly, assessed the situation, gave me a quote, very reasonable and scheduled
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Rated 5 out of 5 starsThanks to Andrew, Will, Vasyl, and Yuriy of Aquatech Waterproofing, I no longer panic when the weather forecast calls for rain. The four-man team applied interior waterproofing to a large portion of my basement in less than seven hours. They placed Dimpleboard on the walls, installed and covered new four-inch plastic weeping tile pipe and also backfilled, cleaned and cemented the entire work area. The crew was courteous, on time and professional. Company representative, Nico, who appraised the job before the work began, was also very knowledgeable and kindly answered all my questions. The cost was extremely reasonable and I have a transferable life-time warranty for their services. I highly recommend them.
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Rated 5 out of 5 starsAquatech Project Consultant Richard responded ultra-quickly to my call for an estimate on 2 cracks on the inside of my basement foundation wall, visible only after I removed panelling & insulation & only when it rained heavily & water was pouring through those 2 small cracks. Richard impressed me with his assessment expertise & the speed at which he provided the best quote & solution for my leaks & my budget as a retiree on a fixed income. The repair on the outside wall with weeping tile replacement & utilities locates was scheduled & communication with Rita in the office & follow up with Richard was excellent. The day of the repair, Water Proof Technicians Vasyl & Yuriy arrived on time & ready to work. They were totally professional, polite & prepared with expertise & the right equipment to complete the task. They impressed me to no end with their work ethic & support for each other rotating in & out of the trench to get down to the footings. They installed the new weeping tile, cleaned the foundation wall & revealed 2 very long cracks which they V cut and repaired with hydraulic concrete. The rest of the process was their standard applications of Aqua Block, fibreglass mesh, another layer of Aqua Block, a layer of Poly-tarp, & a Dimpleboard membrane installation. They back filled the trench & cleaned up the area to perfection. Aquatech is blessed to have Vasyl & Yuriy as employees – thorough & meticulous. They are 12 out of 10 in my opinion!!! Note: 2 of my neighbours were impressed & asked for Aquatech’s phone number from me. Thank you Richard, Rita, Vasyl & Yuri.
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Rated 5 out of 5 starsAquatech consultant, Shawn McGirr, investigated my water problem and provided a realistic and cost effective solution. A few days later Bob and Alex arrived to do the work. They both worked very hard and were efficient and clean. They completed an incredible amount of work in a very short period of time and left the worksite as clean as it was before they arrived. I’m confident that the issue has been resolved and comforted by the lifetime warranty.
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Rated 5 out of 5 starsAlex, Eugene, Mike and Igor did an amazing job with my basement waterproofing project. They were very personable, very hardworking and very efficient. I was very pleasantly surprised how quickly they finished the job. Everything was cleaned up and put back in order when they were done. I definitely recommend Aquatech Waterproofing. From my first meeting with Tony to discuss the project, I could tell they were the right choice
Basement Leak Repair and Municipal Rebates
If your basement leak repair involves a sump pump or backwater valve, you may qualify for a municipal rebate covering part of the cost. The City of Toronto offers up to $2,250 toward sump pump installation, plus $300 for battery backup, under the Basement Flooding Protection Subsidy Program. Peel Region and Vaughan offer similar rebates for backwater valve installation. Crack repair and waterproofing membrane work aren’t rebate-eligible on their own, but if your inspection reveals you also need a sump pump or backwater valve, Aquatech will flag that opportunity and handle the itemized documentation your application needs.
Why Choose Aquatech For Leaky Basement Repair
When you’re dealing with a leak, you need an accurate diagnosis, not a guess dressed up as a quote. Aquatech has repaired basement leaks across Toronto and the GTA since 1996, backed by a lifetime warranty and a price match guarantee on every job. Whether the cause is a foundation crack, a failing cove joint, or hydrostatic pressure, we identify the real source and fix it, not just patch the symptom until it comes back.
Our Leaky Basement Repair Offers
Price
Match Guarantee
Get a lower quote from any licensed Ontario waterproofing contractor and Aquatech will match it: same scope, same materials.
$300 Off
Waterproofing Services
Save $300 on waterproofing projects over $12,000, ask your estimator to apply the discount at your free consultation.
lifetime
transferable Warranty
Enjoy peace of mind with long-term protection. Our systems are built to last and fully backed by warranty.
FINANCING AVAILABLE
IN Toronto
What Causes a Leaky Basement?
The seam where your floor meets the foundation wall is never fully sealed, and hydrostatic pressure forces water through it over time
Toronto’s clay-heavy soil holds water against your foundation long after the rain stops, eventually forcing it through any weak point
Even a hairline crack is enough for water to seep through under pressure
Failing or missing weeping tile
Old, clogged, or collapsed drainage lets groundwater pool against your foundation instead of draining away
Window well leaks
A poorly drained window well pushes water directly against the frame and seal
Poor exterior grading
If your yard slopes toward your house instead of away from it, water is directed straight at your foundation
How To Fix a Leaky Basement?
A leaky basement is only ever fixed correctly when the actual cause is addressed, not just wherever the water happens to show up. That’s why every basement leak repair Aquatech performs follows the same eight-step process, from full diagnosis to a final test under real water flow. Getting the repair right the first time means the leak doesn’t just come back somewhere else next season. Here’s exactly how the process works, step by step.
1. Full Inspection and Diagnosis
We inspect your basement for cracks, gaps, damaged pipes, and any signs of water intrusion to identify the actual source of the leak, not just where the water happens to show up.
2. Grading and Drainage Assessment
We check whether your yard’s grading and gutter drainage are directing water toward your foundation instead of away from it, since poor exterior drainage is a common hidden contributor to leaks.
3. Foundation Crack Repair
Cracks and gaps in your foundation walls or floor are sealed using hydraulic cement or epoxy injection, restoring the wall’s integrity rather than just covering the surface.
4. Sump Pump Installation, If Needed
If water is accumulating faster than gravity drainage can handle, we install a sump pump to actively remove it before it becomes a flooding risk.
5. Waterproofing Membrane Application
For leaks caused by hydrostatic pressure or porous concrete, a waterproofing membrane is applied to stop water from passing through the wall itself.
6. Drainage System Installation
New or replacement weeping tile is installed to carry groundwater away from your foundation instead of letting it pool against it.
7. Interior Moisture Control
Where needed, we address lingering humidity with proper ventilation or a dehumidification recommendation, so mold and musty odors don’t return even after the leak itself is fixed.
8. Final Testing and Walkthrough
Every repair is tested under real water flow before we consider the job complete, and backed by Aquatech’s lifetime warranty.
Why DIY Basement Leak Repair Often Fails
It’s tempting to patch a leak yourself, but most DIY fixes treat the symptom, not the cause, which is why the same leak often comes back within a season or two.
A dehumidifier treats the air, not the source: it can reduce humidity, but it does nothing to stop water from actively entering your basement
Hydraulic cement patches crack again: they seal the visible gap but don’t relieve the hydrostatic pressure still pushing against the wall, so a new crack often opens nearby
Waterproofing paint peels and fails: it blocks moisture from the inside but does nothing to stop water from continuing to saturate the wall itself
Caulk and sealants aren’t built for foundations: they’re designed for small surface gaps, not the constant pressure a foundation wall experiences underground
What Problems Can A Leaky Basement Lead To?
Left unaddressed, a basement leak doesn’t stay a small problem, it compounds:
- Structural damage: water weakens the foundation, walls, and floors over time
- Mold and mildew growth: creates real respiratory and allergy risks for your family
- Damaged belongings: furniture, electronics, and stored items are often the first casualties
- Pest infestations: moisture attracts termites, rodents, and insects
- Higher energy costs: excess humidity forces your HVAC to work harder
- Electrical hazards: water reaching electrical systems is a genuine safety risk
- Worsening foundation problems: what starts as a leak can progress into structural instability
The longer a leak goes unaddressed, the more of these compound at once, which is why fixing it early costs far less than fixing it after it’s spread.
FEATURED WATERPROOFING PROJECTS
Discover Our Completed Interior Waterproofing Projects
From cove joint leaks to full interior drainage systems, Aquatech has completed interior waterproofing projects across Toronto and the surrounding region, sump pump installation, drainage channels, and everything in between. Every project reflects the same standard: a proper diagnosis, quality materials, and lasting results backed by a lifetime warranty. Browse real projects below to see the kind of work homeowners trust us to deliver.
Interior Waterproofing in Mississauga
Interior Waterproofing in Toronto
Interior Waterproofing in Kitchener
Interior Waterproofing in Scarborough
