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Basement Waterproofing Mississauga

Leading Basement Waterproofers 

in Mississauga

Aquamaster is one of the leading basement waterproofing companies named The Best of for three years in a row. Since 2009 we’ve been offering a full range of basement waterproofing services:

  • Interior & Exterior Basement Waterproofing

  • Basement Underpinning

  • Foundation Repairs

  • Basement Leak Repair

  • Window Well Installation

  • Weeping Tile Installation

  • Window Well Installation

  • Other Waterproofing & Plumbing services


Take advantage of our 10% discount & 25-year warranty on Basement Waterproofing Mississauga!

Built to Last for Decades

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Warning Signs of Basement Leaks

Signs that you Need Basement Waterproofing in Mississauga?

Basement waterproofing includes a number of services all designed to keep your home free of leaks. Water may be entering your basement through so many different sources, that’s why there is a number of signs that your need basement waterproofing. Here is a couple of examples:


  • Leaking Window Well – one of the easiest problems to spot. When your window well doesn’t work properly, you may see water accumulate around the window, or enter your home thorough where the window well is located

  • Water Coming up Through the Floor – our clients in Mississauga call us surprised because the water is coming up through the basement floor. This may be happening due to a clogged or broken drain, leaky pipes, groundwater, etc. This is definitely a sign that you need to get basement waterproofers on the phone as soon as possible!

  • Wet Basement Floors & Walls – there must be a cause behind wet basement walls or floors. A number of things may be causing this, basement waterproofing contractors will be able to assist with leak detection to find the source of the leak & repair it

  • Pipes Penetration – there is a number of potential leaks in your basement that may be related to leaky pipes. This includes water condensation on the pipes, leaks at the entry points for the pipes, leaks and ducts and more.

  • High Humidity – when you have wet basement problems, the humidity in your basement may increase. This is yet another reason to get basement waterproofing contractors on the phone.

  • Efflorescence – white substance on the walls may be a sign of wet basement problems.

  • Mold & Mildew – as well as fungy grow in high-humidity environments. If your basement is wet, mold & mildew are more likely to grow there. This may be harmful you’re your family, that’s why it’s a good idea to get a professional on the phone.

  • Water Leak Prevention – the best reason to waterproof your basement is preventing basement water leaks before they happen. Often times clients seek basement leak repair, while preventing the leaks is a more cost-effective approach long-term.


There are more signs of potential structural damage to the foundation of your property. Our team at Aquamaster Basement Waterproofing Mississauga has been waterproofing basements since 2009. We invest heavily in training our teams, sourcing the best basement waterproofing materials, all to deliver the highest quality basement waterproofing services for our clients.


Don’t wait, get our basement waterproofers on the phone today!

What you Get With Basement Waterproofing?

What are the Benefits of Basement Waterproofing in Mississauga?

Basement waterproofing is one of the best improvements you can make for your property. That’s because investing in basement waterproofing will help protect your investment and may even increase the value of your property. Here is a couple of benefits that basement waterproofing brings to the table:


  • Protects your Investment – properties are expensive, often among the most expensive things people buy. Basement waterproofing will help protect your property from water damage. This will make your investment more safe.

  • Prevents Water Leaks – some types of basement waterproofing can not only repair water leaks but also minimize the risk of basement leaks & floods.  

  • Extends Life of the Foundation – exterior basement waterproofing can minimize the interaction your foundation has with the groundwater and the potential structural damage that comes with it. As a result, your foundation will last longer.

  • Protects Materials – having no water leaks in your basement will protect construction materials used in your basement walls & floors.

  • Extra Space – basement waterproofing will allow you to finish your basement knowing that you did everything you could to minimize the risk of water damage. This will add more space to your basement.

  • Increased Property Value – all of the above will help make your property a more desirable and safe investment. As a result, the value of your property may increase.


These and other benefits make basement waterproofing a good investment for many properties. Get one of our experts on the phone today to discuss how basement waterproofing can protect your basement from water damage!


Services Under Basement Waterproofing Mississauga

What can be Included in Basement Waterproofing Mississauga?

Basement Waterproofing Services Infographics

When it comes to basement waterproofing, there is no one-fits-all approach. During the free basement waterproofing assessment our experts will design the best solution for your specific case. Our teams are trained to develop basement waterproofing scopes based on sources of water leaks, the extent of water damage, the amount of groundwater in your area, your plans for the property, your budget and more. When designing the waterproofing solutions there is a number of services we pick from, here is a couple of examples.

Exterior basement waterproofing is a method of preventing water from seeping into a basement by applying protective measures on the outside of the foundation walls. It typically involves excavating the soil around the foundation, repairing foundation cracks, applying a waterproof coating or membrane to the walls, and installing a drainage system (weeping tile installation) to redirect water away from the basement. This approach helps to create a barrier against moisture and prevents water accumulation, thereby protecting the basement from potential leaks and water damage.

Exterior Waterproofing Cost Mississauga - $100-$300/linear foot

Basement Underpinning (Floor Lowering)

Basement underpinning is a construction technique used to strengthen the foundation or increase the depth of an existing basement or foundation. It involves excavating the soil beneath the foundation and extending its depth or providing additional support. Basement underpinning can be done using a variety of methods depending on the specifics of your project. 

Flood Cleanup Services

The main goal of flood cleanup services is to minimize damage and prevent the growth of mold and bacteria by quickly removing standing water, drying out affected areas, and cleaning and disinfecting surfaces.

Some of the services that may be included in a flood cleanup package include water extraction, dehumidification, carpet cleaning, upholstery cleaning, structural drying, mold remediation, and odor removal. 

Weeping tiles, also known as drain tiles or perimeter drains, are necessary to manage groundwater and prevent water accumulation around the foundation of a building. They act as a drainage system, collecting water and directing it away from the foundation, helping to prevent water damage, basement flooding, and potential structural issues.

Internal waterproofing is a technique used to manage water infiltration within a basement by implementing measures inside the structure. Instead of addressing the issue from the exterior, internal waterproofing focuses on controlling water that has already entered the basement or is likely to enter through cracks, gaps, or hydrostatic pressure. A typical interior basement waterproofing project can include applying sealants or waterproof coatings on the interior walls, installing interior drainage systems such as French drains or sump pumps, and using vapor barriers to prevent moisture from seeping through the walls or floors. These measures help to collect and redirect water away from the basement, protecting it from potential water damage and minimizing the risk of mold growth or structural issues.

Interior Waterproofing Cost Mississauga - $70-$350/linear foot

Cracked basement wall, and cracked basement floor will almost 100% lead to water leaks or even worse. After the basement cracks are detected, we will go for foundation crack repair. Foundation cracks will be injected with an epoxy resin solution that bonds the pieces of the concrete foundation together.

Foundation Crack Repair Cost Mississauga - $1,500-$3,200

Basement plumbing rough-ins & basement bathroom rough-ins are some of the most popular services along with new construction waterproofing. They involve our team of Aquamaster waterproofing contractors installing pipes and vents for the plumbing system in new construction projects. This service involves routing pipes through wall cavities, running vent stacks to the roof, laying underground pipes, and installing fixtures and end elements etc.

Sump pump installation is important for effectively managing water accumulation and preventing basement flooding. A sump pump is a mechanical device installed in a pit (sump) in the basement floor. It works by automatically detecting and pumping out water that collects in the sump pit.  Sump pumps can be a part of interior basement waterproofing projects.

Sump Pump Installation Cost Mississauga
- $500-$3,600

Window Well Installation

Window well installation involves creating a protective structure around basement windows to allow natural light to enter and facilitate emergency egress. It typically consists of excavating the soil around the window, installing a retaining wall or window well liner, and providing proper drainage.

Window Well Installation Cost Mississauga - $1,600-$4,000

Basement Leak Detection & Basement Leak Repair

If you are experiencing wet basement problems or see foundation leaks on your walls, this could be a sign that you need a foundation leak repair. The first step is often foundation leak detection. Our teams are trained to deliver quality foundation leak detection & repair services and have all the necessary equipment with them. Let us find the leak in your basement & do the foundation crack repair to address it!

Should you Choose Interior or Exterior Waterproofing?

Understanding Exterior vs Interior Basement Waterproofing

Interior and exterior basement waterproofing are two different approaches to preventing (exterior) or managing (interior) the water that makes it to your basement. Here's a brief explanation of both waterproofing methods.

Interior Basement Waterproofing - involves addressing water issues from within the basement. It focuses on managing water that has already entered or is likely to enter the basement through cracks, gaps, or hydrostatic pressure.

The details will vary, but an average interior basement waterproofing project can include:

  • Crack Repair - Identifying and sealing cracks or gaps in the basement walls and floors using sealants or waterproof coatings.

  • Drainage - Installing interior drainage systems, such as French drains or drain tiles, along the perimeter of the basement to collect and redirect water to a sump pump.

  • Sump Pump Installation - Installing a sump pump to remove collected water from the basement and discharge it away from the foundation.

  • Waterproofing Membrane - is installed to help direct water that made it to your basement towards the sump pump that will push the water out.

Exterior Basement Waterproofing - addresses water issues from the outside of the foundation walls. It focuses on preventing water from entering the basement in the first place by creating a barrier against moisture.

Specifics will vary, but here is an example of a generic exterior basement waterproofing project:

  • Excavating the soil around the foundation to expose the exterior walls.

  • Repairing wall cracks - basement waterproofing contractors will repair newly discovered basement wall cracks.

  • Applying a waterproof coating - or membrane to the exterior walls to create a protective barrier against water penetration.

  • Drainage - installing weeping tiles or drainage boards, along the foundation walls to collect and redirect water away from the basement.

  • Backfilling - the excavated area with gravel or other suitable materials to promote proper drainage.

Both interior and exterior basement waterproofing have their advantages and are often used in combination for comprehensive waterproofing solutions, depending on the specific needs and circumstances of the building.

  • Why is Basement Waterproofing Important?
    Your property may be protected from a number of unfortunate situations by having foundation and basement waterproofing done. Other then catching fire and burning down, flooding in a basement is one of the worst accidents that can happen in a home. When foundations begin to fracture, water can enter the basement and damage the bases of the flooring and walls. In the worst-case scenario, it may even cause a home to collapse. Basement waterproofing applies not just to basements but also the home’s foundations. Basement waterproofing is an essential fix if you have water, mildew, or rotting issues in your basement. Basement waterproofing can both solve any underlying issues in the space and be a preventative countermeasure against potential water damage. 1. Protects Structural Integrity of your Home - another advantage of waterproofing your basement is that it strengthens the structure of your home. Take note: your basement acts as the foundation for your home. It must be robust enough to complete this task. Waterproofing may ensure that your home lasts a prolonged lifespan. This is especially true if your home frequently experiences severe weather or adverse temperatures. 2. Increases the Value of Your Home - If you intend to sell your house in the near future, consider basement waterproofing. A home free of dampness and leaks is a crucial selling element for home buyers, making it more desirable. If you have not improved your basement in decades, buyers may consider it a significant inconvenience. This might give visitors a negative image of your home, especially if they smell the mustiness of old water. Distinct odors and signs of excess water can drive away potential buyers. Basements with waterproofing are also simpler to clean. This is another selling factor that can be desirable to future residents. Your home is more valuable if it is effectively protected and maintained. This adds more value to your home while you still live there and in the case that you do end up selling your home, a return on investment. In most circumstances, you may deduct the expenditures of the waterproofing job. 3. Prevents Mold & Mildew - Mold can be a serious problem if it develops in your home. Mold will gradually destroy the area where it colonizes and has the potential to create health problems for your home’s inhabitants. People who suffer from Bronchitis are especially vulnerable to mold and poor air quality. Mold grows from small spores that are invisible to the human eye and can be found in both outdoor and indoor air. Mold can start growing inside if it is on a damp surface. It simply requires moisture, water, and dust to thrive. Since dust is everywhere, if it settles on a damp surface, it might begin to grow indoors. That should give you an idea of the dangers of a damp or wet basement. However, basement waterproofing can prevent mold buildup from ever happening. Although mold typically stays unnoticed until it has developed, seeking the assistance of a qualified professional is a proactive decision. Certified specialists are trained to deal with mold in the home and are up to date on the latest products, techniques, and laws. Now, prevention is the greatest choice when it comes to keeping mold out of your home. So, if you discover a moisture or water problem, have it rectified or checked as soon as possible. With the benefits of basement waterproofing, there are two main types to consider, exterior basement waterproofing and interior basement waterproofing. Each with its own advantages and applications.
  • What are the Causes of a Leaky Basement?
    There is a number of things that commonly cause basement to leak, here is a couple of the most common ones. Basement Window Wells - Water penetration through your window sill can be caused by water buildup around near-grade basement windows. To remedy this, water entering your window area should be drained by adding or replacing defective window wells, as well as installing vertical weeping tile and a 3/4 gravel bedding. This will keep your foundation from leaking and your basement from flooding. Home Foundations made of Block or Bricks - Air gaps and mortar joints in block and brick walls may allow water to penetrate the crevices of your walls. Water infiltration inside block and brick foundations may be prevented and repaired using a mix of exterior and interior waterproofing methods. Water collecting between brick walls can be drained by drilling into the foundation’s interior to remove the water buildup. Basement Leaks Caused by Joints - joint leaks occur at the intersections of your wall and footing, your basement floor and foundation, and joints where additional extensions have been installed. To repair and fill these various sorts of joints, hydraulic cement is used. The altered cement is critical to preventing more damage and water leaks. Top of Foundation Leaks - If the sill is not sealed or if the original seal has deteriorated, the area where the foundation meets the brick might become a source of water leakage. Maintaining the sill with a waterproof sealant is critical for resolving this problem and avoiding water infiltration into the sill. Water may still pass through this place even if there is no hydrostatic pressure.
  • What is Internal Basement Waterproofing?
    Internal basement waterproofing is another method of stopping water damage and flooding in your basement. While external repairs provide the best solution, an internal project can be performed when foundation digging is not optimal. The internal waterproofing method may be the best option depending on a specific criteria: The area surrounding the exterior cannot be accessed because the space is confined or the area cannot be reached. The water problem is not a foundation leak but a hydrostatic pressure problem, which means the groundwater under the concrete slab raises up and down and causes the water to penetrate through the basement slab or where the wall meets the floor. This groundwater can also mean there could be an underground creek where the house was built. The internal system is an economical solution for unfinished living areas. Interior Wall & Floor Sealer - Internal waterproofing allows you to install drainage on the inside of your home, rerouting water intake to a correct point of release. The major advantage of implementing an internal waterproofing system is that it may collect water passing through the wall and beneath the footing. Basement walls that have been pierced will be drained away by our drainage membrane, creating a barrier between your wall and your living space. Water that travels beneath the footing might cause wet spots and leaks on your basement floor, which will be covered by the drainage board and drained through new weeping tiles. Sump Pumps - The fundamental component of every waterproofing system is a place where the water in the system may be discharged. When current drainage is clogged or there are no other drainage alternatives, your expert may recommend a sump pump installation. In your basement, a pit is dug to serve as the lowest point of your waterproofing system. Inside the pit, a high-quality plastic liner is put, allowing water to flow in by gravity drainage. The trigger of a sump pump, which ejects water from the sump pit to the exterior of the home, detects water buildup. We only utilize high-quality pumps and plumbing materials, and we also provide battery backup pumps that will keep working even if your power goes out. Before we perform any work, we provide you with the same inspection service. This is important to ensure that we cover every problem that is leading to a wet basement issue. After we have identified all of the trouble areas, we will provide you with the best internal waterproofing solution for your unique needs. Our internal waterproofing solutions may include repairing all cracks or breaks in your foundation walls, adding a waterproof membrane to the interior and replacing any defective weeping tiles. A French drain installation can also be part of your solution. This image gives you an overview of some of the problems that cause a wet basement: No matter how well your home was built, the basement can still develop leaks. Homes are constructed to meet industry and safety standards. However, over time, homes settle and the foundation walls and floor may crack. Other water problems may come from the water table under your home or changes in the city sewer system. A small leak now can turn into a major problem as time passes. Leaks also create mold, mildew and water damage. This can end up requiring very costly repairs to your home. Professional basement waterproofing requires knowledge and skills, along with the right resources and tools. A fully effective treatment includes addressing drainage and adding sealers. Once your basement is professionally waterproofed, it will remain dry. We guarantee this. Call us, or email us today, so we can provide you with an inspection and a cost effective solution to your leaky basement problem. Our licensed experts are ready to fix any type of foundation problem you are experiencing.
  • What Causes Basement Interior to Leak?
    Damp or Wet Basement Flooring - the source of water entering the basement through the concrete floor or where the basement walls meet the floor is most likely subterranean groundwater. Rising groundwater and saturation produce hydrostatic pressure during rainy weather, which pushes against the foundation and drives water through cracks and gaps in the concrete. This stress can cause cracks in the basement floor and walls. Visible White Substances on Walls - limestone, clay, mortar, and aggregate make up concrete and the white border or patch you observe is calcium evaporating from the block. It is a sign of water or too much moisture and should be treated carefully. It is referred to as efflorescence. Since this will only show on concrete, you will only be able to see it if your basement is not finished. Other indicators will develop if your basement is experiencing excessive leaking, water damage will nearly always show some kind of warning indication. Painted Walls Appear Damaged - paint can peel away from the surface it was painted on as it ages, similarly to peeling paint in older homes. It does not, however, flake off just because it is aged. Paint may peel for a variety of reasons, including the paint being the incorrect type for the material it was painted on, the surface not being properly prepared, or humidity or moisture in the walls you painted on. Wet surfaces will not hold paint. Water vapor will discolor it, causing it to peel off the wall or poke holes in it. This can be a direct indication that the walls of your basement are holding too much moisture or are very damp. Excess Rusting - metal rusts when there is an abundance of moisture in the atmosphere. Rust can form on fuse boxes, water heaters, jack posts, and appliances due to excessive moisture and humidity. When rust occurs, remove it completely and repaint it as soon as possible, and then analyze the source of the moisture. The rust will return if not addressed immediately.
  • How Exterior Basement Waterproofing Works?
    External waterproofing is the ideal solution to stem water damage, or to prevent excess water from getting past the foundation into the basement. However, external waterproofing does cause disruption to the outside of the home. The soil and underlying gravel have to be removed in order to get a close look at defects on the outside of the foundation. Power washing and then power drying the foundation walls is the best way to detect hairline cracks or fissures. Once the problem areas are uncovered, then each problem is handled separately. A flexible, cement sealant is applied to all the exposed areas of the foundation, which adds extra support and protection to the concrete foundation by strengthening the existing walls. Then a heavy polyurethane drainage mat is attached to the exposed walls. This extra protection on the outside ensures the foundation will ward off any excess buildup of groundwater. Outside drainage is another part of the waterproofing solution. Many homes still have the old-fashioned clay weeping tiles, which degrade and clog over time. Outdated drainage pipes are replaced with modern weeping tiles, which are made of plastic and perforated so they don’t clog as easily. Done correctly, external waterproofing will keep the foundation and basement watertight for decades. We are going to demonstrate the best practices of basement waterproofing that have been tested, proven and working for many years for all our clients. We are not talking about magic waterproof paints, channel drain tiles that sit on top of the footing, molding drainage system and e.c. None of them completely, and more important properly solve the wet basement issue. Most of the waterproofing systems have been designed for easy installation, and not for how well they will perform. That little box of tricks doesn’t take you very far. In fact, it sometimes takes you nowhere. The real best practice isn’t a particular product at all. It is a well-defined series of steps that conduct to effectively performing system. The Aquamaster’s approach is significantly different from quick fixes. It’s not based on guesswork, and it doesn’t have the excitement and appeal of magic products. Our solid knowledge, craft, skill, and expertise prove that it always works. Exterior waterproofing is a method of repairing a leaky basement from the outside of your home by exposing the foundation and applying the necessary waterproofing material to create a foundation waterproofing system that redirects and disperses water away from your foundation walls. This is one of the most effective waterproofing options for basement leaks and the most typical method of basement foundation repair. Aquamaster has been providing professional waterproofing to Toronto homes for many years. An external waterproofing solution is the best choice to provide the highest level of protection against basement flooding and water damage. Our experts understand the processes fully and we offer complete transparency in all the work we perform. We will explain every step of the process to you so that you will know what to expect from our work. Poor foundation drainage, high levels of groundwater, major storms and foundation cracks can all contribute to a wet basement and water damage. We will consult with you and inspect your home, drainage systems and property. We look for any problem areas and will discuss the recommended solutions to provide you with permanent protection from leaks and moisture. Every home is different and Aquamaster provides customized solutions for every job we complete. The work may involve repairing cracks with epoxy or replacing the waterproofing membrane along your foundations. In the majority of cases, external waterproofing involves digging down to the footers of your foundation to locate all the problem areas and ensure that your basement is fully protected. On some occasions, we may not have to completely dig out the foundation. You may simply need to have your weeping tiles replaced or a French drain installed. If your existing drains are clogged, the groundwater will back up and place additional pressure on the foundation walls, forcing water into any cracks. A complete inspection of your home’s drainage system and foundation is the only way to truly know what work needs to be done. The experts at Aquamaster will provide you with a customized plan to repair your basement that includes a full guarantee. We understand waterproofing in Toronto and the Greater Toronto area and our staff are experienced professionals.

Why Choose Us?

3,000+ Happy Clients Chose Aquamaster


True Warranty Coverage

Work, material 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 10% 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!

Don't Take Our Word for It!

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



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And Southern Ontario...

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