Real Mississauga homes. Real problems. Permanent fixes – with warranties.
DrainCom is a trusted waterproofing company in Mississauga serving homeowners across the GTA for over 20 years. When you call us, you’re speaking directly with a local team that works in your neighbourhood every day.
We provide complete solutions including basement waterproofing, foundation crack repair, drain repair, sump pump installation, and backwater valve installation.
Water enters Mississauga basements in many different ways. Our waterproofing services are matched to the source of the problem, not just the symptom. Here’s the full range of what we offer.
We’ll inspect your home and recommend the right solution — no guesswork.
Blocked drains and sewer backups don’t wait for business hours. Our drainage team is fully equipped for emergency calls, preventive maintenance, and complete drain system repair – residential and commercial, anywhere in Mississauga or the GTA.
Blocked drains and sewer backups don’t wait for business hours. Our drainage team is fully equipped for emergency calls, preventive maintenance, and complete drain system repair – residential and commercial, anywhere in Mississauga or the GTA.
Protect your basement from flooding with reliable sump pump systems and battery backups.
Prevent sewage from backing into your basement during heavy rain or system overload.
Identify issues inside your pipes with precision before any repair work begins.
Fix underground pipes without digging up your yard using modern trenchless technology.
Remove grease, debris, and buildup from drain lines using powerful cleaning methods.
Fix underground pipes without digging up your yard using modern trenchless technology.
Ensure proper drainage in basements, laundry rooms, and mechanical areas.
Fast response for blocked sinks, toilets, and basement drains.
Drain maintenance and repair solutions for restaurants and commercial properties.
We’ll diagnose the problem and fix it properly the first time.
Water problems in Mississauga basements aren’t random – they’re caused by local conditions affecting both your foundation and drainage system.
Mississauga’s clay-heavy soil holds water after rain, creating constant pressure against your foundation walls. Over time, small cracks expand - especially with Ontario’s freeze-thaw cycles.
Older homes in areas like Cooksville, Malton, and Lakeview often lack modern waterproofing protection, making them more vulnerable to leaks and long-term damage.
Ven a sealed foundation can flood if your drainage system fails.
Mississauga’s aging combined sewer systems can become overwhelmed during heavy rain – causing water or sewage to back up into basements.
Tree roots, collapsed pipes, and blocked drains are common issues in older neighbourhoods across the city.
Water damage doesn’t happen all at once – it builds over time. If you notice any of these signs, your home may already be at risk.
That chalky white residue is efflorescence - free lime leaching out as moisture pushes through your concrete. It’s your foundation telling you water is already getting in. Ignore it and the concrete weakens over time.
A musty odour is mould and fungus spores in the air. You may not see water, but damp conditions are already breeding health hazards - especially risky for anyone with asthma or allergies. Don’t mask it. Fix it.
Hairline cracks in poured concrete or block walls are not cosmetic. Ontario’s freeze-thaw cycles force water into those cracks each winter - and every freeze makes them wider. A small crack repair now costs a fraction of what a flooded basement does later.
Dark patches or tide marks on basement walls and floors after heavy rain or spring thaw are signs of active water seepage. Hydrostatic pressure from saturated soil is pushing moisture through the wall-to-floor joint - one of the most common entry points we see across Mississauga.
Your sump pump running non-stop - especially when it hasn’t rained recently - signals a high water table beneath your home. That’s the groundwater from Mississauga’s Credit River and Cooksville Creek drainage patterns pushing up under your slab.
Mould can begin growing in a damp basement within 24 to 48 hours. Once it spreads into drywall, insulation, and floor joists, you’re looking at a remediation project - not just a waterproofing job. Catching it early is everything.
Your sump pump cycling constantly - even days after the last rainfall - is not normal operation. It signals that groundwater is continuously rising beneath your foundation, overwhelming your drainage system. A pump working that hard will burn out. When it does, your basement floods. That's not a drainage inconvenience - it's a ticking clock.
Water that lingers in your sink or tub long after you've pulled the plug is your drain telling you a blockage is forming. It could be grease buildup, calcification from hard water, or the early stages of tree root intrusion. Left alone, a partial blockage becomes a full one - and a full one becomes a backup right into your basement.
A sewage odour rising from your floor drain or toilet is not a plumbing quirk. It means raw sewer gas - or actual sewage - is moving in the wrong direction through your drain lines. In Mississauga's older combined sewer neighbourhoods, this is a serious early warning of a backup ready to happen. Don't mask it with air freshener. Get it inspected.
If your toilet gurgles when you run the kitchen tap, or your floor drain bubbles after a shower, air is being pushed backward through a partially blocked line. That trapped air means water is already struggling to get through. The gurgle you hear today is the flood you get next storm season.
Puddles that sit for days around your foundation after rain aren't just a yard problem. They're a sign your perimeter drainage is failing - water has nowhere to go except down, against your foundation walls. Mississauga's clay soil holds that pooled water in place and keeps the hydrostatic pressure building. What starts outside ends up inside.
If water ever bubbles up or shoots up through your basement floor drain during a heavy storm, your home's drainage system has been defeated by the municipal sewer load. This is a combined sewer backup - and it brings raw sewage with it. Mississauga's aging combined sewer infrastructure makes this a real and recurring risk, especially in Cooksville, Malton, and pre-1980 neighbourhoods. A backwater valve stops it. Nothing else does.
Same six-step process for every job – waterproofing or drainage. No guesswork. No surprises. Just reliable service that comes to your door.
Most Mississauga homeowners don’t know the city will partially fund flood protection work. Here’s what’s currently available – and how DrainCom makes claiming it completely painless.
Up to $10,500 in total flood protection subsidies. Covers backwater valve, sump pump, and weeping tile severance for qualifying Mississauga homeowners.
Up to $3,400 in rebates for backwater valve and sump pump installation. Plus an interest-free 3-year loan for combined installs.
Up to $750 rebate for backwater valve installation by a licensed contractor. DrainCom is city-approved for all rebate-eligible work.
Up to $3,400 rebate for sump pump installation. Works can be bundled for maximum combined rebate value under the Peel Region program.
DrainCom is a city-approved contractor for all rebate-eligible work. We prepare permit applications, inspection documentation, and rebate submissions for you – at no extra cost. All work is performed by licensed professionals, as Ontario law requires for rebate eligibility.
Call us before any work begins and we’ll confirm which rebates apply to your specific Mississauga property. Don’t leave money on the table.
Confirm Your Rebate Eligibility →
Twenty-plus years of showing up, doing honest work, and leaving homeowners satisfied. Not a one-time score - a consistent track record you can verify review by review.
Over 20,000 GTA homes waterproofed. Thousands of drain systems repaired. More than 300,000 linear feet of foundation wall sealed. We’ve seen every version of this problem - and fixed it.
Our warranty travels with your house when you sell it. The new owners are covered too. That’s the confidence we have in every waterproofing and drainage system we install.
Basement waterproofing and drainage repair under one roof. No gaps in accountability. No coordinating between separate trades. Save up to 70% on combined projects.
Emergency response available. Our trucks carry tools and parts for most waterproofing and drainage jobs on the first visit. We come to you, ready to work.
Every job starts with a clear, itemized estimate before work begins. No hidden fees, no pressure. We treat your home the way we’d want ours treated.
Real Mississauga homes. Real problems. Permanent fixes – with warranties.
Problem: 3 active foundation cracks; water entry after every rainfall on a pre-1980 brick home.Service: Exterior waterproofing + weeping tile replacement + hydraulic cement crack injection.Outcome: Zero leaks since repair. 25-year warranty issued.
Problem: Sewer backup into basement during 2024 storm events; combined sewer system overwhelmed.Service: Interior waterproofing + sump pump + backwater valve installation.Outcome: Full flood protection installed. Homeowner claimed $3,400 Peel Region rebate.
Problem: Clay soil saturation causing water pooling along entire foundation perimeter after rain.Service: Foundation crack repair (polyurethane injection) + French drain system installation.Outcome: Drainage redirected. Foundation permanently sealed.
Problem: 80% blocked clay tile drain with severe tree root intrusion; complete drainage failure.Service: CCTV camera inspection + trenchless pipe replacement (60 ft).Outcome: Drain replaced in 2 days. No yard excavation. Post-camera confirmed fully clear.
Business Hour:
Monday to Friday: 8a.m -9p.m
Saturday and Sunday: 9a.m – 2p.m
Real questions from Mississauga homeowners. Straight answers.
Basement waterproofing stops water from penetrating your foundation walls and floor - using membranes, crack injection, weeping tile, and drainage boards applied to the foundation itself. Drainage services deal with how water moves through your underground pipes and sewer system - drain cleaning, sewer repair, sump pump installation, backwater valve installation, and trenchless pipe replacement. Many Mississauga homes need both, because a properly sealed foundation can still flood if the drainage system fails during a heavy storm. DrainCom handles both services, which is why our free inspection looks at the complete picture - not just half the problem.
Interior waterproofing runs from $100 to $240 per linear foot. Exterior waterproofing ranges from $150 to $400 per linear foot, depending on excavation depth and soil conditions. Foundation crack repair starts at $1,800. Sump pump installation ranges from $900 to $3,500. These are starting points - the actual cost depends on your foundation type, extent of the problem, and site access. We offer a free, no-obligation inspection and written quote before any work begins. Many Mississauga homeowners also qualify for Peel Region rebates of up to $10,500, which significantly reduces out-of-pocket costs.
Drain repair costs vary based on the nature and location of the problem. Clogged drain cleaning starts at a few hundred dollars. Trenchless pipe repair or replacement is typically around half the cost of traditional excavation, and usually completed in a single day. CCTV camera inspection is usually billed separately and identifies whether a simple cleaning or a full pipe repair is needed. We provide a clear, itemized quote after inspection so there are no surprises. Call 905-238-6800 for a free assessment.
Exterior waterproofing stops water before it reaches your foundation wall. We excavate to the footing, clean and seal the wall with hydraulic cement and a waterproofing membrane, and install or replace the weeping tile. It’s the most complete solution but requires excavation. Interior waterproofing manages water that has already penetrated the wall by redirecting it through a Delta MS membrane and perimeter weeping tile to a sump pump. It’s less invasive and more cost-effective for certain foundations. The right choice depends on your foundation type, depth, and the source of the leak. Our free inspection determines which approach is right for your home.
For waterproofing: efflorescence (white chalky powder) on foundation walls, a persistent musty smell, water stains after rain, visible foundation cracks, or mould growth. For drainage: a sump pump that runs constantly, sewage smell from floor drains, slow-draining sinks, gurgling toilets, or water backing into your basement floor drain during heavy rain. If you notice any of these, book a free inspection - we’ll assess both systems and tell you exactly what’s happening.
Yes. Peel Region offers up to $10,500 in flood protection subsidies for qualifying installations - including backwater valves, sump pumps, and weeping tile severance. The City of Toronto offers up to $3,400. All work must be done by a licensed contractor to qualify. DrainCom is city-approved for all rebate-eligible services and handles every piece of paperwork - permit applications, inspection documentation, and rebate submissions - at no extra charge. Call us before work begins to confirm your eligibility.
Yes. DrainCom offers a 25-year transferable warranty on most waterproofing and drainage services, covering both labour and materials. The warranty transfers to new owners if you sell your home - a meaningful selling point in Mississauga’s competitive real estate market. We stand behind our work because we’ve spent over 20 years doing it right the first time.
A backwater valve is a one-way gate installed on your main sewer line. When the municipal sewer gets overwhelmed during heavy rain - as Mississauga’s aging combined sewer systems regularly do - sewage flows backward into your home through the floor drain. The backwater valve snaps shut and stops that flow. Given Mississauga’s infrastructure and the severity of recent storm seasons, a backwater valve is one of the most cost-effective flood prevention measures available. City rebates of up to $750 apply for installation.
Interior waterproofing: typically one to two days. Exterior waterproofing: three to five days depending on excavation depth. Foundation crack injections: a few hours per crack. Trenchless drain repair: usually one day. CCTV drain inspection: same day. We provide a clear timeline in your written quote, show up on schedule, and clean up completely before leaving.
Yes. DrainCom is fully licensed and insured for basement waterproofing, foundation repair, drain repair, sewer cleaning, and plumbing services across Ontario. All work is performed by trained specialists and complies with Ontario Building Code requirements. We’ve been serving Mississauga and the GTA for over 20 years, hold a 9.9/10 rating on HomeStars with 820+ verified reviews, and are approved by the City of Mississauga and Peel Region for all rebate-eligible work.
Whether you have a wet basement, a blocked drain, a failing sump pump, or a foundation crack you’ve been putting off – DrainCom handles all of it, under one roof, with one warranty.
We’ll come to your home, inspect everything in person, and give you a straight written quote. No pressure. No obligation. No runaround. Just honest advice from a local Mississauga company that has been doing this for over 20 years and stands behind every job with a 25-year transferable warranty.
Free inspection. Written quote. 25-year warranty. Mississauga-based. Available for emergencies.
905-238-6800