Basement waterproofing in Vaughan after the 133 mm storm of September 2, 2026. Our waterproofing company fixes leaks and cracks and installs backwater valves and sump pumps across Maple, Kleinburg and Concord. Free inspection, 25-year warranty.
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Serge knows his stuff, he is very good. He and his team installed sump pump and backflow valves and everything went smooth. The inspector said he had failed a few installs from other contractors on my street and I was the first to pass and that it was done very well. Serge and his team will be my go to guys from now on
Draincom did a great job of installing a backwater valve in my basement, they came quick, on time and they took care of everything, no nonsense, completed the job in one day and left everything clean and ready to re-tile. I would definitely use them again.
DrainCom Inc has been the utmost professional and courteous team I have worked with. Talin, Serge and the crew are true professionals. They were amazingly responsive with the initial assessment for my basement issue and their fix and solution towards the repair was fast and very professional. DrainCom Inc are the only place to call to get the best value for money and service. Thank you for all you hard work. Omar
Thank you for your review, we appreciate you taking the time to provide us with your feedback. We are happy to know you were satisfied with your experience. It was our pleasure to be of service to you and we look forward to your referrals! Wishing you all the best, DrainCom Team
Serge and his team installed a sump pump, backwater valve, replaced all our cheap builder grade water shut off valves AND fixed a leaking crack in our foundation. After observing these amazing professionals work over the course of multiple days, I can say that I would not hesitate to hire them again. They showed up exactly when they said they would, communicated everything clearly to us and responded quickly to any questions we had. Tantamount to all this, their work was exceptional!
95 of our 100 Google reviews are five stars. See what homeowners across the GTA say about our crews.
See All 100 ReviewsWe can do all four in one visit plan.
When the sanitary sewer overloads, water flows back up your lateral. We camera the line, then install a backwater valve with a City permit. Vaughan's subsidy covers part of the cost.
Much of Vaughan was built in the last 30 years. Backfill settles, poured walls crack, and tie rod patches give out. We inject from inside, usually in one visit.
Clay soil holds rainwater against the foundation. We relieve the pressure with interior weeping tile and a sump pit, or exterior drainage at the footing.
A 133 mm storm will find a weak pump. We replace undersized or worn pumps, add battery backup for outages, and install high-water alarms.
We dig out flooded wells and install drains tied into the weeping tile, then backfill with clear stone.
Kleinburg and other newer estate homes often have deep basements and walkouts. Deep walls face more groundwater pressure. We design drainage for the depth, not just the leak.
| Community | What we usually find | Our usual fix |
|---|---|---|
| Maple | 1990s and 2000s subdivisions with tie rod leaks | Injection, sump upgrade |
| Kleinburg | New estate builds, deep basements, settling | Exterior drainage, crack repair |
| Concord | Drainage near industrial edges, older laterals | Camera scope, backwater valve |
| Thornhill (Vaughan side) | 1960s to 80s homes, aging laterals | Hydro jetting, lateral repair, valve |
| Vellore and Vaughan Mills | New builds, busy sump pits | Pump upgrade, battery backup |
Living in Woodbridge? See our Woodbridge basement waterproofing page.
The City of Vaughan pays 50% of the cost of a sanitary backwater valve, up to $750. Labour, materials, permit and tax all count. You need a licensed installer, a building permit and an inspection, and you must apply within one year of the work. We handle the permit and inspection and give you the itemized invoice.
Our waterproofing company covers all of Vaughan with interior basement waterproofing, exterior basement waterproofing, crack repair, sump pumps and backwater valves. Searching for basement waterproofing near me in Maple, Kleinburg or Concord? We come to you.
The right choice depends on where water gets in, how deep your basement is and how much room there is to dig. We’ll show you which one fits after a free inspection.
Interior waterproofing, also called internal basement waterproofing, stops water from inside the house. We open a channel around the floor’s edge, lay new weeping tile in clear stone, fix a DELTA-MS membrane to the walls and drain it all to a sump pit. It works for finished basements in Maple and Vellore and deep basements in Kleinburg. Expect $100 to $240 per linear foot.
Exterior waterproofing keeps water off the wall in the first place. We excavate to the footing, clean and repair the wall, apply a waterproof membrane, lay new weeping tile and restore your yard. It’s the best fix for Thornhill and Concord homes with older walls and failing weeping tile. Expect $150 to $400 per linear foot.
From your first call to the warranty in your hand. Clear steps, a written price and no surprises along the way.
We trace the water and camera the drains if needed.
Including the subsidy amount.
City of Vaughan permit and Ontario One Call.
Most jobs take 1 to 3 days.
Water test and final camera check.
Everything restored, warranty in hand.
| Service | Typical price |
|---|---|
| Interior waterproofing | $100 to $240 per linear foot |
| Exterior waterproofing | $150 to $400 per linear foot |
| Foundation crack repair | $1,800 to $3,700 per crack |
| Window well repair | $1,900 to $3,500 |
| Sump pump and pit | $2,200 to $3,500 |
| Sump pump battery backup | $1,280 to $1,600 |
| Backwater valve, inside | $2,200 to $2,700 |
| Backwater valve, outside | $2,400 to $3,500 |
Deep basements, walkouts and finished interiors affect the price. Your free inspection gives you the exact number.
| Postal code | Communities |
|---|---|
| L4H | Vellore Village, Sonoma Heights, Nashville, newer Kleinburg |
| L4J | Thornhill (Vaughan), Beverley Glen, Thornhill Woods |
| L4K | Concord, Vaughan Metropolitan Centre, Vaughan Mills |
| L6A | Maple, Patterson, Rutherford |
| L0J | Kleinburg village |
| L4L | Woodbridge (see our Woodbridge page) |
Vaughan’s 133 mm on September 2, 2026 brought widespread flooding across the city.
Clay till holds water, and Ontario winters crack walls as moisture freezes and expands.
The Humber and Don watersheds run through Vaughan, and homes near their valleys carry higher groundwater. The TRCA manages both.
Vaughan grew to 323,103 people by 2021. Newer subdivisions settle for years after they’re built.
What every job includes:
Over 20 years we’ve waterproofed more than 300,000 linear feet of foundation walls and installed about 700,000 feet of membrane and weeping tile. Our office is at 1307 Kamato Rd., Mississauga, ON L4W 2M2. Hours: Monday to Friday 8 a.m. to 9 p.m., Saturday and Sunday 9 a.m. to 2 p.m., with emergency response by phone for active flooding and sewer backups.
Find the entry point. If water came up the floor drain, start with a backwater valve. If it came through walls or cracks, waterproofing comes first. Our inspection sorts it out.
Yes. The City pays 50% of a sanitary backwater valve, up to $750, with a permit and inspection. Apply within one year.
Yes. It’s required by the City and for the subsidy. We pull it.
The steel rods that held the concrete forms rust over time, and the patches crack. Water follows the rod through the wall. Injection seals it.
Yes. A camera inspection shows breaks, roots and sags so you only dig where it’s needed.
Vaughan is a short drive from our Mississauga base. Active leaks and backups get priority.
Interior waterproofing runs $100 to $240 per linear foot and exterior $150 to $400. A backwater valve runs $2,200 to $3,500 before the subsidy.
Yes. Our 25-year warranty moves with the house.
Maple, Kleinburg and Concord are on our regular York Region route, along with these cities.
Don't see your town? Call 905-238-6800 and ask. We likely cover it.
Get ready before the next big storm. Call 905-238-6800 or book online.