McDowell Drain Services

Basement Waterproofing St. Catharines

Introduction

A wet basement can cause many problems, from damaging your foundation to creating mold and bad smells. McDowell Drain Services in St. Catharines fixes issues like wall cracks, leaks, and constant dampness using proven methods and strong materials, making sure your basement stays dry and your home stays safe.

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Customized Basement Waterproofing Services in St. Catharines by McDowell Drain Services

McDowell offering a range of basement waterproofing services like Interior or exterior waterproofing, Sump Pump Installation, Backwater Valve Setup & Drainage Solutions. We know how important it is to keep your basement dry and safe. Here in St. Catharines, the weather can be tough on homes, heavy spring rains, melting snow in winter, and soil that holds water can all lead to leaks or flooding. Whether you’re in Port Dalhousie, Grantham, Merritton, or Downtown St. Catharines, we understand what your basement is up against. That’s why we create a waterproofing plan just for you. We use a mix of interior, exterior, and preventative methods to stop water from getting in, protect your foundation, and keep your basement dry year-round.
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Let’s take a look at our basement waterproofing services in detail

Interior waterproofing is all about stopping water from getting into your basement from the inside. We seal walls and floors with special coatings, add drainage channels along the edges, and connect them to a sump pump that pushes water out of your home. This method is great if digging outside isn’t an option or if water is already finding its way in. It’s a cost-effective way to keep your basement dry, clean, and safe without major exterior work.

Interior waterproofing services
exterior waterproofing services

 Exterior waterproofing stops water before it even touches your basement walls. We dig around your foundation, apply waterproof membranes, install exterior drains, and make sure the ground slopes away from your home. This is the most complete way to keep water out, especially if leaks are caused by outside pressure from soil and rain.

A backwater valve is a device that allows water and waste to leave your home but prevents it from coming back in. During heavy rain, the city sewer can overflow and push dirty water toward your basement. A backwater valve blocks it before it enters. Installing one is an effective way to protect your home from sewer backups, and in St. Catharines, you may be eligible for a rebate to reduce the cost.

Back-Water Valve Installation Services
Sump Pump Installation Services
A sump pump is installed in a pit at the lowest part of your basement or crawl space. When water collects in the pit, the pump automatically removes it and sends it away from your home. This prevents flooding and water damage. We install new sump pumps, replace old ones, and can add battery backups so the pump keeps working even during a power outage.

A sewer camera inspection is a method of checking the inside of your pipes using a small waterproof camera attached to a flexible cable. The camera sends live video to a monitor so we can clearly see the condition of the pipe. This helps locate cracks, blockages, tree root intrusions, corrosion, or collapsed sections. By identifying the exact location and cause of the problem, repairs can be made with precision. This process reduces the need for unnecessary digging and lowers repair time and cost.

Sewer camera inspection

Trench-less sewer replacement is a modern technique for replacing damaged sewer lines without removing large sections of your yard or driveway. The process uses small entry points to insert a new pipe inside the existing one, creating a seamless and durable replacement. This method is less invasive than traditional excavation, preserves landscaping, and can be completed more quickly. It is an effective solution when the sewer line is cracked, broken, or deteriorated, and it restores proper flow while minimizing disruption to the property.

Trench-less sewer replacement
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With us, you can stop worrying every time it rains and enjoy the peace of mind that your home is protected. The St. Catharines Enhanced Basement Flooding Protection Subsidy Program can cover up to 90% of your waterproofing costs, with a maximum rebate of $5,000. This program helps pay for approved upgrades such as sump pump installation, backwater valve installation, weeping tile disconnection, and re-routing to a sump pump.

You may qualify if your home was built before 2012, including duplexes and triplexes. This is a valuable opportunity to protect your home from flooding while reducing your out-of-pocket expenses.

For more details, check our rebatespage. 

Which Waterproofing Method Is Best for My Home?

The best waterproofing for your home really depends on what kind of foundation you have, how bad the leaks are, how much you can spend, and how quickly you want it fixed. Some homes are fine with one method, but others need a mix to stay dry. An inspection is the best way to know if you need interior work, exterior work, or both together for the best protection.

Based on foundation type

  • Block: Works well with outside waterproofing and drainage because water can sit inside the blocks.
  • Concrete: Can be fixed from inside or outside depending on cracks and where water is coming in.
  • Stone: Needs outside sealing and better drainage because of all the joints
  • Small damp spots: Sealants or small drainage fixes can help.
  • Big leaks or flooding: Outside waterproofing with grading and drains is better.

Based on budget and urgency

  • Small budget or need it fast: Inside drains and sump pumps are quicker and cheaper.
  • Bigger budget and time: Outside waterproofing lasts longer.

When to combine methods:

  • If water comes from many places or you have both ground and surface water problems, using inside and outside systems together works best.

Our Basement Repair Process

Regular Plumbing Maintenance
01

Inspection

We start by visiting your home and carefully checking your basement. This includes looking for signs of leaks, cracks, or drainage issues that may need solutions like interior waterproofing or exterior waterproofing.
02

Plan

Once we understand the problem, we explain it clearly and suggest the best repair method for your home, whether that is a sump pump installation, backwater valve, or foundation repair.
Team of Engineers and/or Architects - McDowell Drain & Waterproofing Services
person inspecting or working on a water pump and metering system
03

Preparation

We prepare the work area to protect your home and gather all the necessary tools and materials.

04

Repair

We carry out the repair work, which could include sealing cracks, installing drains, adding a sump pump, or upgrading your waterproofing system.

Testing and Quality Assurance
24/7 Emergency Drain Cleaning
05

Clean Up

After the work is done, we make sure your basement and yard are left clean and free of debris.

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06

Final Check

We test the repairs to ensure your basement stays dry and protected for years to come.

Is it better to waterproof a basement from inside or outside?

Waterproofing a basement from outside is generally the stronger option because it blocks water before it touches the foundation walls. This keeps the concrete from constant moisture contact and reduces risk of cracks over time. Outside work involves digging around the house, applying waterproof membrane, adding drainage board and gravel system so water flows away. Inside waterproofing is more of a water control method. It uses sump pumps, drainage channels and sealants to move water after it already seep in. It costs less and is faster but the walls still stay wet. Many experts suggest outside method, or sometimes both together.

According to Natural Resources Canada, Minor water leaks may sometimes be corrected from the interior; more serious problems should be corrected from the outside.” This means interior fixes can handle small moisture issues, but bigger waterproofing problems like ongoing leaks need exterior excavation, proper waterproof or damp proof coatings, and a drainage system to protect the foundation walls.

Do sump pumps prevent basement flooding?

Yes, a sump pump helps keep your basement dry by pumping out water that collects in a pit. This water can come from heavy rain, melting snow, or small plumbing leaks. When the water reaches a certain level, the pump turns on by itself and pushes the water away from your house. This helps protect your basement walls, keeps things from getting damaged, and stops mold from growing. A sump pump works even better if you also have good drainage and outside waterproofing.

Basement

Why Choose McDowell Drain Services in St. Catharines?

Keeping a basement dry isn’t just about fixing one leak. It’s about knowing the problem, solving it right, and making sure it doesn’t come back. That’s what we’ve been doing for homeowners in St. Catharines and the Niagara Region for a very long time. Here’s why people choose us.

45+ years fixing leaks

We’ve been at this for decades and have seen almost every kind of basement problem.

Made for your home

Every basement is different, so we plan the work to fit your home, not just use the same idea for everyone.

Google Guaranteed

Our work is checked and trusted, so you know we’re reliable.

Over 3,500 jobs done

Thousands of happy homeowners in the Niagara Region.

20 year warranty

You even pass it to the next owner if you sell your house.

Here 24/7

If it’s urgent, we come right away, day or night.

Strong materials, proven ways

We only use stuff and methods that last.

Good quality, fair price

We keep it honest with no surprise costs.

storm sewer connection mcdowell drain waterproofing niagara on the lake scaled

Common Basement Issues St. Catharines Homeowners Face

In St. Catharines, in places like Port Dalhousie, Merritton, Glenridge, Old Western Hill, Fitzgerald, Lakeport, and Secord Woods, many people have basement problems because of the wet weather, heavy soil, and older houses. After big rains or when snow melts, water can get in and make walls damp, floors wet, or sometimes flood the whole basement. Small cracks in walls or floors let water sneak in and get worse over time. Dampness can cause mold and mildew, which smell bad and ruin things stored there. Poor drainage, clogged gutters, or broken downspouts often make water gather near the house. In winter, when the ground freezes and thaws, it pushes on the walls and makes more cracks. Many homeowners fix these problems with waterproofing, sump pumps, and fixing the ground outside so water flows away instead of into the basement.
Other major causes of basement issues homeowners usually face:

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Get a FREE Quote Now!

Don’t wait for water problems to get worse. Call us and we will check your basement, explain the problem in simple words, and give you a free quote with no pressure.

Call McDowell Drain Services at (905) 431-5612 or email us at sink2sewer@gmail.com to get started.

Frequently Asked Questions

Is it worth it to waterproof a basement?
Yes, it helps stop water damage, protects your home’s foundation, and keeps the basement dry.
With good materials and care, it can last 10–20 years or more.
With good materials and care, it can last 10–20 years or more.
Check it often, clean the pit, test it, and make sure the drain pipe and backup power work.