Scarborough's unique geology — dense lacustrine clay, post-war foundations, ravine drainage, and combined sewers — demands waterproofing expertise built for local conditions. We've protected over 1,100 Scarborough homes. Scarborough homeowners also qualify for the City of Toronto subsidy — up to $4,550 back.
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Four local factors make Scarborough homes particularly vulnerable to basement water intrusion — and make choosing a contractor who understands them critical.
Scarborough sits on the same dense lacustrine clay that forms the famous Bluffs. This clay saturates quickly, expands when wet, and creates intense hydrostatic pressure against foundations — especially problematic in the lower-lying neighbourhoods south of Kingston Road.
The majority of Scarborough's housing was built in the 1950s–1970s to house Toronto's expanding population. Most of these homes have original weeping tile that is now 50–70 years old and has long since collapsed — offering little to no drainage protection.
Scarborough's many ravines and creek systems — Highland Creek, Rouge River, Morningside — create localized flood risks for adjacent properties, especially during the intense summer rainstorms Toronto has seen more frequently in recent years.
Older Scarborough neighbourhoods are served by combined sanitary-storm sewers that can back up into basements during heavy rain. A properly installed backwater valve is essential protection in these areas — and is eligible for a City of Toronto subsidy.
We offer the full range of waterproofing solutions — from interior drainage to full exterior excavation. Every recommendation starts with an honest assessment of your actual problem.
A perimeter drain installed inside the basement captures water before it causes damage, routing it to a sump pump. The most cost-effective solution for most Scarborough homes with clay soil pressure.
Get a Quote →Full excavation around the foundation, membrane application, new drainage board, and weeping tile replacement. The most comprehensive solution — ideal when the exterior is accessible and the problem is severe.
Get a Quote →Polyurethane or epoxy injection seals active cracks in poured concrete walls from the inside — no excavation required. Most cracks are resolved in a single visit with a written workmanship warranty.
Get a Quote →Primary and battery backup sump pumps keep your drainage system running even during power outages — a common occurrence during the severe storms that cause Scarborough basement flooding. Eligible for up to $2,250 + $300 City of Toronto subsidy.
Get a Quote →Prevents sewer backup from flowing into your basement through floor drains. Essential for Scarborough's combined sewer areas. Eligible for up to $1,600 back from the City of Toronto subsidy program.
Get a Quote →Waterlogged window wells are a common water entry point in older Scarborough bungalows and semis. Properly graded and drained wells prevent water accumulation and window leakage.
Get a Quote →Scarborough is part of the City of Toronto — which means every Scarborough homeowner is eligible for the City of Toronto Basement Flooding Protection Subsidy Program. This is a direct financial rebate for qualifying waterproofing and flood-prevention work. Many homeowners don't realize they're eligible. We help you claim every dollar you're owed.
Current subsidy amounts apply to eligible work completed after November 12, 2025. Subject to City of Toronto program terms and conditions.
View Official City of Toronto Program →From Agincourt to Port Union, West Hill to Rouge — our crews know Scarborough's neighbourhoods, soil conditions, and housing stock inside and out.
Simple, transparent, and built around giving you an honest answer first — not the most expensive one.
We assess your basement, identify the source of water intrusion, and explain exactly what we find — no pressure, no jargon.
You receive a detailed written quote with clear pricing. We recommend what solves your problem — not the most expensive option available.
Our experienced crews complete the work efficiently and cleanly. Most jobs are done in one to three days with minimal disruption to your home.
Your work is backed by a warranty. We walk you through the system, advise on subsidy claims, and are available for any questions afterward.
Real reviews from real neighbours across Scarborough.
"Our Agincourt home has been leaking every spring since we moved in six years ago. Interior drainage system installed last October — first completely dry spring we've had. The team was quick, professional and didn't try to oversell us."
"Crack in our poured concrete wall near the window — water every rain. Injection sealed it in one visit with a written workmanship warranty. Couldn't be happier with how fast and clean the job was."
"We were told we needed full exterior excavation by another company. These guys actually assessed it properly and said interior drainage would solve our problem for a third of the price. Honest, professional, and right — it's been dry ever since."
Costs in Scarborough (which is part of Toronto) are in line with Toronto pricing. Interior drainage systems typically run $3,500–$10,000 depending on the size and complexity of the basement. Exterior waterproofing — the most comprehensive approach involving full excavation — ranges from $10,000–$30,000+. Foundation crack injections are $500–$1,200 per crack. Sump pump installation is $800–$2,500, and a backwater valve runs $1,000–$2,000 installed. The best way to get an accurate number is a free on-site assessment — every home is different.
Yes — absolutely. Scarborough is part of the City of Toronto, which means every Scarborough homeowner is fully eligible for the City of Toronto Basement Flooding Protection Subsidy Program. For eligible work completed after November 12, 2025, you can receive: up to $2,250 for a sump pump, up to $300 for a battery backup, up to $1,600 for a backwater valve, and up to $400 for weeping tile disconnection — for a total of up to $4,550. We can help guide you through the application.
Scarborough has several factors that make heavy-rain leaking especially common. The dense lacustrine clay soil found throughout the area (the same clay that forms the Scarborough Bluffs) absorbs water slowly, becomes saturated quickly, and exerts intense hydrostatic pressure against foundation walls. Combine this with aging weeping tile systems (most homes from the 1950s–70s building boom now have completely failed drainage), and groundwater has nowhere to go except against your foundation. Proximity to Scarborough's ravine systems and creek corridors adds further risk during storm events. The good news: these are all solvable problems with the right system in place.
These are two distinct problems that require different solutions. Basement flooding refers to groundwater or surface water entering through foundation walls, floor cracks, or window wells — this is addressed with waterproofing systems and sump pumps. Sewer backup is when sewage flows backward through your floor drain or toilet during heavy rain — caused by the city's combined storm-sanitary sewer system becoming overwhelmed. Many older Scarborough neighbourhoods are served by combined sewers, making sewer backup a real risk. The solution for sewer backup is a backwater valve, which prevents reverse flow. In some cases, Scarborough homes need both waterproofing and a backwater valve — our inspection will tell you exactly what your situation requires.
Timeline depends on the type of work. Crack injection is typically completed in a single visit of a few hours. Interior drainage system installation usually takes 1–2 days. Exterior waterproofing — which involves excavation, membrane application, and new drainage — typically takes 3–5 days depending on the home size and accessibility. Backwater valve installation is generally a one-day job. We'll give you a precise timeline with your quote and keep disruption to your home to a minimum throughout the process.
Join over 1,100 Scarborough homeowners who've solved their basement water problems for good. Get your free, no-obligation assessment today — and we'll help you claim every dollar of the City of Toronto subsidy you're eligible for.