Foundation Crack Repair: Which Cracks Need Waterproofing vs Structural Repair?
A crack in your foundation can be either a small waterproofing issue… or the first warning sign of structural movement.
December 25, 2025
A French drain is a simple way to move water away from your home. It’s a gravel-filled trench with a pipe at the bottom that collects and drains water safely. This helps stop water from pooling in your yard or leaking into your basement. In the Niagara Region, where we get a lot of rain and heavy soil, French drain installation is a smart way to keep your property dry and protect your foundation. Pair this with our weeping tile installation or leaky basement repair services for complete protection.
Basement flooding is a growing concern, especially in urban areas like the Niagara Region. Poor drainage is one of the main causes. Installing a proper French drain system can reduce the risk of water damage and costly repairs.
At McDowell Drain & Waterproofing, we install French drains for both homes and commercial properties across the Niagara Region. Our service includes:
Each system we install with one clear goal: to keep water away from your basement and keep it dry and safe. It helps prevent leaks, damp walls, and costly foundation damage. You get a dry, healthy space that lasts.
All work is done by licensed professionals. Niagara Region follows the Ontario Building Code. We also handle permits and inspections. This keeps your project safe, legal, and ready for any rebates you may qualify for. For additional protection, explore our backwater valve installation services.
Common signs you may need a French drain include water pooling around your foundation, a damp or musty basement, mold or mildew growth, soil erosion near your home, and water stains on basement walls or floors. These issues often mean water is not draining properly and can lead to serious damage if ignored. A French drain helps move water away from your home, keeping your basement dry, protecting your foundation, and preventing long-term moisture problems that can harm both your property and your health.
French drains are especially important for homes in the Niagara Region because of the local weather and soil conditions. Heavy rain, melting snow, and constant freeze-thaw cycles soak the clay-rich soil, putting pressure on your foundation. Over time, this can lead to basement leaks, cracks, and even mold. A French drain, helps by moving water away from your foundation before it can cause trouble. This simple system can prevent flooding, protect your home’s structure, and keep your basement dry, which helps maintain your home’s value and overall safety.
It is becoming the new normal for homeowners. With heavy rains, and older infrastructures, Niagara Region homes are more at risk than ever before. The University of Waterloo found that over 50% of water related insurance claims in Canada comes from flooded basements.(source).
That simply means every second home is affected by the water damage during floods. And this is not only water, it’s mould, ruined walls, and expensive bills to get it repaired. Public Safety Canada links it directly to climate shifts and poor drainage in the urban areas.
The Government of Canada also says the average cost to fix a basement is now over $40,000. That’s not counting the stress, health risks or weeks to clean up after that.
Nationwide, flooding is the only costly natural hazard. The Task Force on Flood Insurance and Relocation says Canada sees about $2.9 billion a year in flood damage to homes. But here’s the part that really stands out, 90%of that damage is happening to just 10% of homes. Usually the ones in older neighbourhoods or places where the drainage just isn’t built to handle today’s storms.
That’s why the government offers subsidies, also to protect your home even before water hits it.
There are 3 different types of french drains, Interior, exterior and traditional. Each designed to solve the specific drainage problems. No matter residential or commercial properties, interior and exterior french drain installation is common. An interior French drain is placed along the inside edges of your basement Waterproofing or crawl space to catch and move out water that’s already made its way in. An exterior French drain runs around the outside of your home’s foundation to stop water before it can seep inside. A traditional French drain, sometimes called a curtain drain, is simply a gravel-filled trench with a perforated pipe that channels rainwater or runoff away from problem spots in your yard, keeping those areas dry and protecting your home from water trouble.
A trench filled with gravel and a pipe with holes that collects water and moves it away.
What does it do for:
A drain inside the basement or crawl space that catches water before it floods the area.
What does it do for:
A drain placed around the outside of a foundation to keep water away.
What does it do for:
A French drain should usually be 6 to 12 inches wide and about 18 to 36 inches deep. This helps it collect and move water away from the area properly. The exact depth depends on the type of drainage problem you're trying to fix. For surface water, 18 inches is enough. But for deeper issues like basement water, go closer to 36 inches. Always make sure the drain slopes gently so water flows downhill and doesn’t get stuck.
Here are the steps involved in french drain installation:
In French drain installation, we at McDowell Drain & Waterproofing mostly use trusted, approved stuff like CSA-certified pipes, clean gravel that meets ASTM standards, and good filter fabric to keep dirt out. We also follow building codes to make sure the slope is right, using tools like trenchers and levels. Sometimes we add a sump pump if water can’t drain on its own. Everything works together to stop water from getting into your basement or foundation.
A French drain is a simple but effective way to keep water away from your foundation and prevent basement flooding. It relieves the pressure that water builds up in the soil, helping to stop cracks and leaks. By keeping your basement dry, it also prevents mold and mildew from growing. French drains can protect your yard from erosion and stop water from pooling after heavy rain. For many homeowners, it’s a long-term, low-maintenance solution that keeps both the home and property safe.
In the Niagara Region, Niagara Falls offers up to $4,000 for weeping tile disconnection with sump pump installation and $1,200 for a backwater valve. St. Catharines provides up to $3,500, and Welland up to $4,000, for similar basement flooding prevention upgrades to help reduce flood risks and property damage.
Niagara Falls offers the Weeping Tile Removal Assistance Program (WRAP), providing up to 100% reimbursement (maximum $4,000)for disconnecting weeping tiles from the sanitary sewer and installing a sump pump, and up to $1,200 for a backwater valve.
St. Catharines runs the Flood Alleviation Program (FLAP), offering grants up to $3,500 to homeowners facing or at risk of sewer surcharge and basement flooding for weeping tiles with sump pump and backwater valve installation.
Welland provides the SWAP program, a subsidy valued at up to $4,000 to assist homeowners with similar flood prevention upgrades.
These programs help Niagara homeowners reduce basement flooding risks and avoid costly damage.
Check out our rebates page for more details.
Weeping Tile:
A weeping tile is a perforated pipe placed around the foundation of a house to collect and drain groundwater. It helps prevent water from entering the basement and is usually installed deep underground. The pipe is surrounded by gravel and covered with a filter to stop dirt from clogging it.
French Drain:
A French drain is a shallow trench filled with gravel that contains a perforated pipe. It helps move surface water away from wet areas like yards or driveways. It’s mainly used to fix soggy lawns or prevent water pooling.
There are various factors which influence the cost of a French drain. These include the length and depth of the drain, as larger systems require more materials and labor. The soil type matters, as rocky or clay-heavy ground is harder to dig. The location of the drain can raise costs if work is needed around landscaping, driveways, or tight spaces. Using higher-quality materials such as durable pipes or premium gravel will also increase the price. Additional factors include extra waterproofing work, repairing existing damage, and local labor rates or permit fees, which can vary by area.
In many parts of the Niagara Region, like St. Catharines or Thorold, the ground can be full of clay or rocks. This makes digging harder and more time-consuming, which usually means higher labor costs.
In older or urban areas like St. Catharines, tight spaces can slow things down. If access is tricky due to fences, landscaping, or limited working space, the installation becomes more complex and costly.
If the water problem is deeper underground, the drain will need to go deeper too. Deeper installations take more time, require heavier equipment, and often involve extra soil removal, all of which add to the final bill.
An interior French drain (often used in finished basements in places like Welland) is typically less expensive and easier to install.
An exterior system‘ on the other hand, involves more digging and restoration work, which naturally comes with a higher price tag.
Labor rates in the Niagara Region, especially in cities like Niagara on the Lake, Fort Erie, and West Lincoln, are on the higher side. This can have a big impact on your total cost, especially for larger or more complex jobs.
In the Niagara Region, including Pelham, St. Catharines, Thorold, Welland, Niagara Falls etc the cost may range between $500 to $17000. Key factors include the type of French drain, size, complexity, length of the drain, depth of excavation, soil type, and accessibility of the site. Additional costs may come from landscaping restoration, permits, and adding components like sump pumps or gravel backfill. Using high quality materials and hiring experienced contractors can increase upfront costs but ensure better performance and longevity, making it a worthwhile investment for effective water management and basement leak prevention.
On average, $500 – $8,800 is the average cost to install exterior French drain and $4,000 – $17,000 average cost of interior or basement French drain.
Expect to pay around $40 to $85 per linear foot for residential property. Usually the cost is a bit higher for commercial properties.
$10 to $35 per linear foot for residential and may higher for commercial properties.
Check our cost calculator to plan your drainage project and manage your finances better.
Services Offered
We provide service in almost all the areas across the Niagara Region like Fort Erie, Grimbsy, Lincoln, Port Colborne, Thorold, Wainfleet etc. If you’re close to any of these areas, we can probably help. Just contact us and we’ll let you know.
Call McDowell Drain & Waterproofing at (905) 431-5612 or email us at sink2sewer@gmail.com to get started.
We install French drains properly with permits and licensed professionals. Every job comes with a 25-year warranty. That means long-lasting work you can trust.
Our team follows all local rules so you can qualify for available rebates.
If you’re dealing with water in your yard or basement, we’re ready to help.
Call McDowell Drain & Waterproofing at (905) 431-5612 or email us at sink2sewer@gmail.com to get started.
Check out more about our recent projects.Check here!
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