Basement Waterproofing St. Catharines

Aquamaster Drain, Plumbing & Waterproofing provides permanent basement waterproofing St. Catharines homeowners can depend on. We have more than 15 years of proven expertise, and our services offer lasting protection against leaks, flooding, and water damage.

Trust Aquamaster for advanced waterproofing systems, wet basement repairs, foundation crack repair, weeping tile replacement, mold prevention, and full moisture control solutions.

Aquamaster Basement Waterproofing

Award-Winning Waterproofing Contractor in St. Catharines

Our reliable interior and exterior waterproofing services are backed by expert workmanship, flexible financing, and a 25-year warranty, which has helped us earn the distinction of The Best of Basement Waterproofing company for three consecutive years.

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Trusted Basement Waterproofing in St. Catharines

Aquamaster is your #1 waterproofing expert offering leaky basement repair in St. Catharines. We’ve been providing a full range of waterproofing and plumbing services for well over a decade, keeping basements permanently dry and structurally sound. Our waterproofing solutions stand the test of time. We use high-quality materials like Delta MS and Aqua Bloc, and provide expert installation every time.

Licensed & Insured Professionals – Our team is fully qualified to handle any basement repairs you need. This gives you peace of mind, knowing that you have waterproofing pros who are licensed and insured.

25-Year Warranty - We’re confident in the quality of our services. Any waterproofing or plumbing work we complete we secure with a 25-year transferable warranty, one of the best offered in the industry.

Trusted St. Catharines Waterproofing Experts – In our 15+ years of repairing leaky basements, our team has encountered every waterproofing issue imaginable and uses proven techniques and systems to keep your basement dry.

Advanced Basement Waterproofing Materials – Our leaky basement repair in St. Catharines is highly durable because we use advanced materials like polyurea membranes and premium sealants that get the job done well. Enjoy waterproofing you can count on year round.

No one does waterproofing and plumbing like Aquamaster. We handle all your waterproofing and plumbing needs in-house and offer 24/7 emergency services.

Best Basement Waterproofing Company in St. Catharines

Protect your investment. Get a 25-year transferable warranty, the assurance of top-tier waterproofing materials, and enjoy a FREE drain camera inspection.

Full Range Basement Waterproofing Services in St. Catharines

Aquamater offers a full range of basement waterproofing services for a home that is safe and dry. We’re experienced waterproofing professionals dedicated to preserving your home’s structural integrity and the health of your family. Basement waterproofing in St. Catharines can be done as a preventative measure while finishing your basement or as a way to fix water issues and prevent further damage.

Exterior Waterproofing St. Catharines

Exterior waterproofing is the most effective and long-lasting solution for stopping water before it reaches your basement walls. Our exterior waterproofing includes digging around the entire foundation wall and repairing cracks, holes, and structural imperfections. We apply a thick waterproofing membrane and add a drainage board for extra protection before installing new weeping tiles and gravel drainage. Then waterproofing window wells and tie-ins are installed and the area is backfilled.

Interior Waterproofing St. Catharines

Basement waterproofing interior in St. Catharines is a cost-effective and efficient way to control water that enters through cracks or floor joints. It’s a good alternative when exterior waterproofing isn’t feasible due to tight spaces, poor soil condition, or other situations. Interior waterproofing provides reliable protection and helps prevent future water damage. Our process includes installing interior drainage channels, sealing foundation cracks from the inside with epoxy or polyurethane, installing vapour barriers or moisture protection systems, then sump pump installation or upgrades.

Weeping Tile Installation St. Catharines

Weeping tile systems, also referred to as French drains, allow you to avoid basement repairs by controlling groundwater and keeping it away from your foundation. This affordable solution involves installing weeping tile systems along the interior or exterior of your home, preventing pooling and minimizing hydrostatic hydrostatic pressure, which is often the cause of basement leaks. The installation process involves digging trenches, laying perforated pipe on top of gravel, and making sure that there is a slope to encourage better drainage.

Sump Pump Installation St. Catharines

Some pump installation is highly effective in ensuring that your St. Catharines basement remains dry. It does so by gathering or allowing water to fill in a sump pit and then pumping it away from the foundation of your home. This is often installed with an interior waterproofing system and has a sensor that automatically kicks in as water levels increase. Both basic and advanced pump systems are available at Aquamaster. Part of our installation process involves repairing existing sump systems.

Window Well Installation St. Catharines

Installing window wells, particularly in basements, goes a long way in directing water away from your basement windows. When installed the right way, they perform a dual service of keeping water away from your windows and providing a safe emergency exit. To install window wells, we excavate and install drainage systems around your windows, making sure we provide a perfect fit that prevents water from seeping in. Window well installation is a simple solution that has a big impact in addressing leaking basement in St. Catharines.

Backwater Valve Installation St. Catharines

This device is fundamental in preventing flooding. Backwater valves stop sewage from backing up into your basement when there is either a sewer overload or heavy rainfall. This valve is installed in the main sewer line and is a key feature that protects your home and your family from sewer mishap. As qualified waterproofing pros, we install backwater valves in compliance with municipal standards, and we take it a step further by helping you find any available backwater valve rebates that apply in your area. We’ll also help you with the application process.

How Much Does Basement Waterproofing Cost in St. Catharines?

Basement waterproofing costs in St Catharines generally range from $80-$350+ per linear foot. The total cost will depend on whether we are doing interior or exterior waterproofing. For interior waterproofing systems, the cost begins at $80 to $180+ per linear foot. Exterior waterproofing that involves excavation and installing new membranes costs between $100 and $350+ per foot. Book your fee estimate today with Aquamaster – one of the top basement waterproofing companies in St. Catharines.

Factors that impact the overall quote include:

Pickering basement waterproofing digging to foundation

Foundation Repair Services in St. Catharines

Aquamaster has long-term solutions for cracks, settling, and other foundation issues. Our foundation repair is designed to stop any moisture issues immediately and prevent them from reoccurring in the future.

Basement Underpinning St. Catharines

Basement underpinning is one of the best ways that you can reinforce your foundation and lower your basement’s flooring to create more usable space. This method gives additional support to your foundation, increasing its structural integrity and improving your home’s load bearing ability. Underpinning allows you to safely lower your basement floor for a more comfortable and functional basement space. We recommend this if you wish to finish your basement or add a second story. Aquamaster provides professional basement underpinning to St Catharines homeowners, and all our work is in compliance with municipality requirements.

Bench Footing St. Catharines

Another highly effective technique that can be used instead of basement underpinning is bench footing. This is ideal when there may be soil conditions that are not ideal for underpinning or there are structures close to the home that may not allow enough room for basement underpinning. Bench footing allows you to lower the floor of your basement without making any changes to the existence foundation. Lowering is done by constructing a ledge or bench around your foundation. The benefits of this technique is that it adds much-needed headroom and also strengthens the existing foundation.

Basement Wall Crack Repair St. Catharines

The scope of wet basement repair needed can range from something as simple as crack injections to more advanced techniques like underpinning or bench footing. The great thing about our waterproofing team is that we are equipped to handle everything from minor solutions to major foundational issues. We solve each problem by providing lasting solutions. For hairline cracks, we use high-quality epoxy or polyurethane injections. More serious foundation issues require exterior repairs and proven foundation reinforcement techniques to restore safety and structural integrity to your homes. By addressing such issues early on, you can prevent larger and more costly basement repairs.

How to Waterproof Your Basement in St. Catharines

Free Consultation & Inspection

It all begins with an inspection to determine where there may be leaks, cracks, or other drainage issues. Then we create an appropriate action plan to address these issues.

Detailed Project Agreement

Based on the consultation, our team determines the scope of the project, appropriate materials, and provides details on the techniques that we will use. We communicate these clearly before any work begins.

Professional Installation & 25-Year Warranty

With the plan established, we begin the installation process, using high-grade materials that create a durable result. Regardless of the scope of the work, we apply our 25-year transferable warranty that guarantees that the project is covered for decades to come.

Why Trust Aquamaster for Basement Waterproofing Services

Aquamaster is among the most trusted basement waterproofing companies in St. Catharines and the Niagara region. With over 3,000 homes successfully waterproofed, we stand out thanks to our lifetime warranties, honest pricing, premium materials, and outstanding service.

25-Year Warranty
25-Year
Warranty

Every service we provide is backed by our 25-year transferable warranty, guaranteeing you long-term results you can count on.

Emergency Services
24/7 Emergency Waterproofing Services

Whenever you need us, we are here. Providing around-the-clock emergency services that address water issues as quickly as possible.

Fully Licensed and Insured
Fully licensed and Insured

Our team is certified, insured and fully capable of handling any wet basement repair needed for your St. Catharines home.

Upfront Pricing & First-Time Customer Discounts
Upfront Pricing & First-time Customer Discounts

We provide transparent pricing and no hidden costs. With us, you always know the cost upfront. Plus new St Catharines customers get 10% off.

Trusted Since 2009
Trusted
Since 2009

Homeowners across the GTA trust Aquamaster because we’ve provided results you can bank on. Our waterproofing solutions prove the test of time.

Serving Southern
Serving Southern
Ontario

We’ve expanded our services over the years and proudly serve Southern Ontario.

Top-Quality Materials
Top-quality Materials for Lasting Results

We never cut corners with subpar products. Premium products like Delta MS and Aqua Bloc are our standard for waterproofing that lasts.

Stress-Free Experience
Stress-Free Experience

Our goal is to provide hassle-free waterproofing services that you never have to worry about. From beginning to end, we strive to provide a smooth experience for homeowners in St. Catharines.

Finished Basement Waterproofing Projects in St. Catharines

Aquamaster is able to provide quality basement waterproofing in St. Catharines because we have an in-depth understanding of the climate conditions and soil composition of the area. This knowledge allows us to utilize techniques and products that are efficient and effective. In addition to our standard interior and exterior waterproofing installation services, we also offer secondary services like foundation repairs, basement underpinning, and sump pump installation that aid in providing complete waterproofing protection.

Our services are personalized to create the best course of action to address the specific needs of your basement and home. We’ve completed many waterproofing projects in St. Catharines, and are proud to share some of the basements we have finished and restored.

5-Star Reviews from 100+ Happy St. Catharines Customers

Aquamaster has earned over 100 x 5-star customer reviews from happy St. Catharines customers!

I can’t thank Aquamaster enough for their outstanding service. They fixed multiple cracks in my foundation, waterproofed the interior walls, and installed systems to keep groundwater away from the house. The workers were skilled, considerate, and left the entire area neat and tidy. Since the repairs, the basement is dry, safe, and ready to use again — no more worries about mold or structural damage. Superb workmanship and customer care.
zlata
04:31 16 Dec 25
Mike handled our interior basement waterproofing and was incredibly detailed. He showed us the problem areas, installed the drainage system perfectly, and made sure everything looked clean and professional. Zero water issues since. Excellent service!
Shafeeq Shafeeq
20:08 15 Dec 25
Mike and Peter did the exterior basement waterproofing on our home. Not only was the workmanship excellent, but the cleanup was spotless. You can tell they really care about their work. Highly recommend this company!
Omar Baqer
19:58 15 Dec 25
Thomas and Leo were incredibly efficient. They worked nonstop until the job was done and kept us updated the whole time. The basement has stayed completely dry since their visit.
Tokyo Ghost
01:58 19 Nov 25
Maria and Alex made everything so easy. Maria was very responsive and patient with our questions, and Alex’s team handled the work efficiently. They waterproofed the basement and fixed a leaking window well. Everything was done perfectly and on schedule. It’s such a relief knowing our basement is protected.
кіра
05:41 16 Nov 25
We couldn’t be happier with Aquamaster Waterproofing. David and Mike handled the entire project from inspection to final cleanup. They repaired our cracked foundation, sealed the basement walls, and added proper drainage. The work was neat, efficient, and done ahead of schedule. The peace of mind they’ve given us is priceless.
Liza 14
02:45 10 Nov 25
We had a major basement flooding issue, and no one could figure it out—until we called Aquamaster Waterproofing. Sarah and David were thorough during the inspection and found that our sump pump had failed. They replaced it, installed a backup pump, and added better drainage around the foundation. The system works flawlessly now, and our basement has been dry ever since. Five-star service from a truly reliable company.
Mercury
02:16 10 Nov 25
We recently moved into an older home and discovered water coming through the floor in the basement. Aquamaster’s team, led by Alex and David, came right away for an inspection. They installed a sump pump, sealed all visible cracks, and made sure our drainage system was working correctly. The workers were polite, neat, and extremely knowledgeable. It’s rare to find a company that combines great service with such high-quality workmanship. I’m beyond satisfied with the results.
Bogdan Perekatov
04:37 08 Nov 25
David and John from Aquamaster did an excellent job fixing our wet basement. They explained the problem clearly and provided a permanent solution. The quality of their work is unbeatable.
Тарас Назарко
04:50 06 Nov 25
Maria at the front office was so kind and helpful, and Daniel’s crew did flawless work sealing our foundation cracks. We can finally enjoy our basement again. Five-star company through and through.
Usman Mohammad
04:56 04 Nov 25
The crew from Aquamaster did an incredible job. They were very detail-oriented and made sure everything was done properly. I was impressed by their professionalism and care. My basement is completely dry now.
Ильченко Валерия
01:48 29 Sep 25
Aquamaster completely fixed my leaky basement. The crew—Mike and Peter—were fantastic. They worked quickly, cleaned up after themselves, and made sure everything was perfect. I highly recommend this company.
A Zhoravovych
03:54 28 Sep 25
Great service from Aquamaster! They installed a sump pump in my basement and waterproofed the walls. The workers—Andrew and Tom—were very friendly and helpful. Everything is working perfectly, and I’m so glad I called them.
Володимир
05:39 27 Sep 25
Aquamaster went above and beyond to repair my basement foundation. The crew was on time every day, respectful, and very skilled at what they do. They explained the whole waterproofing process so I could understand it clearly. Now my basement is bone dry and I couldn’t be happier.
Женя Топ
03:42 23 Sep 25
Waterproof Basement exceeded my expectations. Mike and Chris did a full basement waterproofing job, and they were incredibly detail-oriented. They sealed every crack, installed a drainage system, and explained the warranty thoroughly. My basement is now dry and comfortable, and I couldn’t be happier with the service.
kofein
03:56 30 Aug 25
We were very pleased with the work done by Aquamaster. The team was professional, worked hard and stayed late to finish the job faster than expected. I would highly recommend Aquamaster. Thank you.
Alida
23:24 19 Aug 25
I highly recommend Aquamaster. Mark and Roman repaired our foundation wall, added waterproof coating, and extended our downspouts. They did more than promised and for the same price. That kind of integrity deserves recognition.
Valeriia Solomko
00:36 18 Aug 25
Our neighbor recommended Aquamaster after they fixed his leaky wall. Now we’re recommending them too! 5 stars.
Катя Данькова
04:15 06 Aug 25
Fast, friendly, and flawless. Aquamaster did an outstanding job and made the whole process easy for us. Would give more than 5 stars if I could!
Коротницька Марія
05:41 31 Jul 25
I usually don’t leave reviews, but Aquamaster earned this one. Everything was smooth, professional, and respectful. You can tell they really care about doing quality work.
Valymir Zhezherun
04:59 31 Jul 25
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We Offer Lifetime Warranty on Basement Waterproofing in St. Catharines

When you partner with Aquamaster for basement waterproofing in St. Catharines, you’re guaranteed lasting protection for your home. Enjoy peace of mind waterproofing services that are fully transferable and come with a lifetime warranty of 25 years on materials and labour.

Basement Waterproofing Materials for St. Catharines Homeowners

The quality of product used, the workmanship, and the right techniques make all the difference. At Aquamaster, we excel at all three. These are some of the materials we use for best results.

Frequently Asked Questions

Here are the answers to some frequently asked questions about our basement and foundation waterproofing services in St. Catharines.

When professionally installed, exterior waterproofing lasts a lifetime. Interior systems can also last decades with proper maintenance.

DIY fixes are temporary. The only way to guarantee long-term results is through professional waterproofing.

Yes. We provide 24/7 emergency flooding and leak repair services across St. Catharines.

Exterior waterproofing is the most comprehensive; however, interior systems are ideal when excavation isn’t possible. We’ll recommend the right solution during your inspection.