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Foundation Repair & Basement Waterproofing Welland

Not your Average Waterproofers, Toronto's Best

Welcome to Aquamaster, one of the leading basement waterproofing companies in Welland. Our services range from simple basement leak detection and foundation crack repairs to complex projects like sump pump installation and repair, weeping tile installation, basement waterproofing and more.


If you are looking for quality, your search is over, you found us. Get started today with 10% off!

Built to Last for Decades

Basement Waterproofing Contractors

Who can Benefit from Basement Waterproofing?

Signs that You Need Basement Waterproofing in Welland

Basement waterproofing projects can include a variety of services depending on the extent of water damage, how much ground water your area has, your budget and your objectives. From simple basement wall and floor crack repairs to complex basement waterproofing services that require excavation, concrete work and more.


Here is a couple of signs that you may need basement waterproofing Welland:


  • Foundation Cracks – foundation crack repair is one of the simplest services under waterproofing and one of the first steps for basement leak repairs

  • Basement Leaks – if basement water leaks are a regular occurrence for your home, constant basement leak repairs can only do as much. You may want to consult a foundation repair contractor to map the best path forward for your property

  • Increased Humidity – high humidity in your basement, wet basement walls and wet basement floors are a sign that you may need basement waterproofing.

  • Water Coming up from a Basement Floor – a common occurrence in Welland, ON.

  • Protect Your Investment – basement waterproofing is not only a remedy for the problems above but also a way to prevent future problems. Our basement waterproofing contractors are often called to work on new construction projects or to help protect existing houses that don’t have basement leaks yet.


Many of the problems above tend to get worse over time. That’s why, if you are experiencing these or other problems, don’t wit get a basement waterproofing expert on the phone today!

Is Basement Waterproofing Worth It?

What are the Benefits of Basement Waterproofign in Welland?

Basement waterproofing is an excellent investment for many properties in Welland and beyond. Here is the most common benefits our clients look for when starting basement waterproofing projects:


  • Prevents Basement Water Leaks – unfortunately, in many cases, basement waterproofing projects start when clients already had water leaks in their basements. Waterproofing is a good way to prevent basement leaks from happening in the future

  • Extend Life of Your Foundation – groundwater can cause water damage to the foundation of your house. Exterior basement waterproofing involves an application of a waterproofing membrane that will seal your foundation from the groundwater. As a result, your foundation will live longer

  • Protects Construction Materials – when water makes it to your basement it can damage your walls, floors, paint and more. Quality basement waterproofing solution will help prevent water from getting to these materials

  • Helps Prevent Basement Floods – unfortunately basement wall & floor leaks get worse over time and can turn into floods. Basement waterproofing can include a number of services the help prevent basement floods

  • Protects your Investment – properties are big investments. Basement waterproofing services can protect your investment from water damage

  • Property Value – protecting your investment from water damage often makes your property more desirable. As a result, it’s the price is likely to increase.


Our team of experienced waterproofing contractors can help design the right basement waterproofing solution for your residential or commercial property in Welland. If you are looking for quality, your search is over, you found us. Get one of our basement waterproofing experts on the phone today!

Welland Basement Waterproofing Contractors for exterior waterproofing new construction

What Basement Waterproofing Approach is Right for You?

Interior vs Exterior Basement Waterproofing - Considerations

Basement waterproofing is a process of preventing water from entering your basement and causing damage to your home. There are two main types of basement waterproofing: exterior and interior.

Exterior waterproofing involves excavating the soil around the foundation walls and applying a waterproof coating or membrane to the outside of the walls. Exterior waterproofing is more expensive than interior waterproofing because it requires excavation and more extensive work, but it provides long-lasting protection for your basement and helps prevent water from making it inside your basement.

Interior waterproofing on the other hand is rather a water management technique, as opposed to waterproofing. It involves installing a drainage system and sump pump inside your basement to collect and remove any water that makes it through. Interior waterproofing is less expensive than exterior waterproofing and can be completed in a shorter amount of time, but it does not provide the same level of protection as exterior waterproofing. Plus it requires maintenance of the waterproofing system - sump pump repair, sump pump maintenance, sump pit cleaning etc.

Both exterior and interior waterproofing have their benefits, and the best option for your home will depend on your specific needs and circumstances. If you're unsure which option is best for you, it's always a good idea to consult with a professional basement waterproofing contractor who can evaluate your home and recommend the best solution.

What Services are Included in Basement Waterproofing Welland

Basement Waterproofing can Include Some of the Following Services

Basement Leak Repairs in Welland

Our waterproofers can help design the right basement waterproofing solution for your property based on the amount of ground water, the extent of the water damage, your objectives, and your budget. Here are a couple of services that are often included in basement waterproofing.

Exterior basement waterproofing is a method of preventing water from entering a basement by applying a waterproof coating or membrane to the outside of the foundation walls. This process involves excavating the soil around the foundation walls to expose the surface of the walls. Foundation cracks are repaired and waterproofing materials are applied. Weeping tiles (drainage) is installed and the trench is backfilled.

A sump pump installation is a process of installing a pump in a basement or crawlspace to remove any water that accumulates in the sump basin. A sump pump is typically installed in homes that are prone to flooding or have issues with excess groundwater.

The installation process involves digging a hole in the basement or crawlspace floor and placing a sump basin or pit in the hole. The sump basin collects any water that enters the basement or crawlspace and directs it to the sump pump. The sump pump then pumps the water out of the basement or crawlspace and away from the foundation of the home. We recommend getting regular sump pump maintenance and repairing the sump pump as soon as it breaks to help prevent  basement floods.

Basement plumbing rough-ins are the initial plumbing installations that are done during the construction or renovation of a basement. These rough-ins are typically installed before the walls and flooring are finished, making it easier to access the pipes and fixtures.

Basement plumbing rough-ins typically include installing the pipes and drains for the basement's bathroom, laundry room, and any other plumbing fixtures. 

Basement leak detection and repair is the process of identifying and fixing any leaks or water infiltration issues in a basement. Basements are prone to water damage and leaks due to their location below ground level, and these issues can cause serious damage to the structure of the building and the contents of the basement. If your see water on your basement walls or floors but are not sure where it's coming from, basement leak detection may help identify the source of the water leak. While basement leak repair service will help fix it.

Interior basement waterproofing is a method of preventing water from entering a basement by installing a drainage system and sump pump inside the basement. This process involves excavating a small trench around the perimeter of the basement floor, which is then filled with gravel and a perforated pipe. This pipe is connected to a sump pump, which collects and removes any water that enters the basement.

Crawlspace Encapsulation

Crawlspace encapsulation is the process of sealing the crawl space of a building with a vapor barrier to prevent moisture and other environmental elements from entering. The encapsulation process involves sealing the walls and floors of the crawl space with a heavy-duty plastic sheet or other barrier material, along with sealing any openings, such as vents or pipes.

Foundation repair refers to the process of repairing and stabilizing the foundation of a building that has been damaged or compromised. Foundation damage can be caused by a variety of factors, including soil movement, water damage, and poor construction practices.

Some common signs of foundation damage include cracks in the walls or floors, sloping or uneven floors, and doors or windows that are difficult to open or close.

The foundation repair process typically involves an inspection by a professional contractor to determine the cause and extent of the damage. Depending on the severity of the damage, the repair may involve simple cosmetic fixes, such as patching cracks, or more extensive structural repairs, such as underpinning or the installation of support beams.

Foundation crack repair is the process of fixing cracks in a home's foundation to prevent water from entering the basement or crawlspace. Cracks in a foundation can occur due to a variety of reasons, including settlement, poor construction, or changes in temperature and humidity.

Foundation crack repair typically involves filling the crack with an epoxy or polyurethane injection. This process seals the crack and prevents water from seeping into the basement or crawlspace. The epoxy or polyurethane injection material also helps to stabilize the foundation and prevent further cracking.

Basement underpinning is a method of strengthening and increasing the depth of a home's foundation. This process involves excavating the soil beneath the existing foundation and extending it downwards to create additional space or support. Watch our video on the basement underpinning process at Aquamaster.

Weeping tile, also known as drain tile or French drain, is a type of drainage system that is installed around the foundation of a building to prevent water from entering the basement or crawlspace.

A weeping tile system typically consists of a perforated pipe that is surrounded by gravel or crushed stone. The pipe is installed around the perimeter of the foundation, and any water that collects in the soil around the foundation is directed into the weeping tile and carried away from the foundation.

Why Choose Us?

3,000+ Happy Clients Chose Aquamaster


True Warranty Coverage

Work, meterial and labour for 25 years. Fully transferable from owner to owner.

24-Hour Emergency

Our emergency team is available 24 hours a day.


Licensed & Insured

Aquamaster team is fully licensed & insured to work in plumbing, concrete, underpinning and waterproofing.



We offer all our clients 20% Off their first Aquamaster service. Get the offer today!

In Business Since 2009


We've been around for a while. We will be around for a lot longer!

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Proudly Serving South Ontario

Aquamaster team is proudly serving multiple locations in Toronto, GTA and multiple locations in Sothern Ontario.


Best Materials

We always choose high quality materials because we want to provide high quality service. 


Peace of Mind

Our service is well-thought through, so you don't have to worry about it!

Basement Waterproofing Reviews

What Our Clients Say?


Stephanie G.

Residential Client

I used Aquamaster for two separate home waterproofing projects and I was extremely satasified with their work and price. Their team are highly skilled, thorough and were able to complete the 10.5 hour job in one day. They were even kind enough to seal my window frame after I noticed a minor leak. I would highly recommend Aquamaster for all your waterproofing and plumbing needs.

The Aquamaster team is absolutely fantastic! They went above and beyond to diagnose and correct the problem that I had with my basement plumbing caused by old pipes and persistent tree roots. I used them once in 2012 and in 2020. I cannot say enough good things about this team - Highly recommend.


Felicia F.

Residential Client


Chris D.

Residential Client

Aqua Master quoted me a very fair price for waterproofing and finshed the job ahead of schedule. We haven't had any water issues in our post-war hm since then. Highly recommend this business for its professionalism and quality of work. Hire with confidence!

How it Works?


Discovery Call

Connect with one of our certified experts, so we can advise on the best way to approach your project.


On-Site Survey

More complex projects require on-site surveys, where a certified Technician will provide a no-obligation estimate.



We sign a contract that outlines details of your project.



We do the work, you get peace of mind and a 25-year transferable warranty.

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What are your Service Areas?

Proudly Serving Southern Ontario and Beyond



King City










And Southern Ontario...

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