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Basement Waterproofing North York

Leak Repairs & Prevention for Wet & Leaky Basements

Aquamaster Basement Waterproofing North York was voted the Best Of Waterproofing Companies three years in a row. Our licensed & and insured team is known for its quality materials, unparalleled workmanship, and flexible pricing options.


We offer a full spectrum of basement waterproofing services – from simple leaky, wet basement repairs and crack repairs to interior & exterior basement waterproofing, basement underpinning, and more.


25-year warranty. Book a FREE estimate today!

Built to Last for Decades

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Common Wet Basement Problems

When to Seek Basement Waterproofing Services in North York?

Your should talk to basement waterproofing professionals as soon as you see the first signs of basement leaks, wet or damp basement walls, floors, mold growth, etc. Common signs of wet basement problems include:

  • Basement Leaks - if you see water leaking through the cracks in the walls or floor.

  • Water coming up through the basement floor - another fairly common occurrence

  • Dumpnes - basement walls or floors feel dump

  • An Unpleasant Smell - may signal mold or fungi

  • Water Pooling on the Basement Floor

  • High Humidity - another common sign that water is finding its way to your basement.

  • And more.

This is where basement waterproofing comes in. Basement Waterproofing is a set of services designed to give you peace of mind that your basement is safe & sound from water leaks, water damage, and basement floods that damaged foundation & broken plumbing eventually lead to.

At Aquamaster we do more than just fix your basement leaks & wet basement problems. Our proven basement waterproofing process makes sure that your basement does not leak ever again.

Since 2009 over 3,000 clients got peace of mind knowing that their property is waterproof by Aquamaster. Most importantly, we are always there for our clients with one of the leading 25-year transferable warranties. 


Cost of Waterproofing in North York

An average basement waterproofing project in North York costs from $70-$350 per linear foot with an average price of basement waterproofing of $100 per linear foot. Factors like size of the basement, the extent off waterdamage, specific services needed for your waterproofing project will impact the final price. You can expect basement waterproofing to cost anywhere from $1,000 (simple leak repairs) to $50,000+ (exterior waterproofing). Book a free estimate to get the price for waterproofing your basement.

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Waterproofing Project Durations

An average waterproofing project typically takes from 1 day to over 2 weeks.  Simple Wall Crack Repairs typically take 1 day to complete, while more extensive Foundation Repairs and Structural Damage Repairs will take longer. Interior Basement Waterproofing and Exterior Basement Waterproofing projects can also take from 1 day to 2 weeks. You can expect the Crawlspace Encapsulation project to take from 3 to 10 days, while Basement Walkouts and Bench Footing typically take 4-5 weeks.

More About Timelines

Repair & Prevent Wet Basement Problems in North York

Full Spectrum of Basement Waterproofing Services

Infographics showing what problems basement waterproofing services can solve - basement leaks, wet walls, floor, water seepage and more

Depending on the challenges you are facing and other factors our team of experienced basement waterproofing contractors in North York will design a solution that fits your specific needs. Often time basement waterproofing includes some of the following services:

Example of Exterior Basement Waterproofing Project in Toronto, near CN Tower

The perfect approach to basement waterproofing. Exterior waterproofing is a method of basement waterproofing used to protect your property from water damage. It's a complex process, that involves excavation around your property and cleaning and drying of the basement walls. Our team will spot and repair basement cracks, openings & imperfections that are hidden underground. We will then follow our exclusive sealing process to install a basement waterproofing membranes & other sealants. The entire branch is then backfilled by a special combination of river-washed gravel & excavated soil. Landscaping & concrete pouring is done. 

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

Basement Underpinning Project in Progress near Nathan Phillips Square in Toronto

Nothing increases the value of one’s property as much as more square feet. Basement underpinning will North York will create additional living space in your property. More square feet = more value. Basement floor lowering often goes hand in hand with basement waterproofing to help prevent future damage to your future basement renovations.

Basement Underpinning Cost - $85-$450 per linear foot

Waterproofing Contractor Installing a Window Well

A window well is a small, typically semi-circular or rectangular excavation that surrounds a basement window or ground-level window. It is designed to provide access to natural light and ventilation for basement spaces while also preventing soil and debris from blocking the window. They are constructed with materials like metal, plastic, or concrete and are often equipped with a cover or grate to prevent dirt, leaves, and water from accumulating in the well.

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

Plumbing Rough Ins Installed in the Basement

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.

Example of Interior Basement Waterproofing Project

Also known as interior waterproofing is another approach to solving the wet basement problem. It typically involves applying a waterproof coating or membrane to the inside of the basement. Following the interior waterproofing methodology, the water is channeled with a weeping tile to the sump pump that pumps the water from the basement outside. This method is technically not waterproofing, but rather a technique designed to manage basement water.

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

Basement Wall Crack Repair in Progress

Basement wall and floor cracks often lead to leaky basement problems. If not repaired on time,  the damage can get worse, and more serious foundation repairs may be required. 

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


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!

Waterproofing Contractors installing a weeping tile in front of CN Tower

Weeping tile, also known as a French drain or drain tile, is a type of drainage system used to manage water around foundations, basements, and other underground structures. Despite its name, it's not an actual tile, but rather a perforated pipe.

The weeping tile consists of a perforated pipe that is usually made of plastic or clay. This pipe is laid in a trench dug around the perimeter of a building's foundation or in the area where water accumulation is a concern. The pipe is placed with the perforations facing downwards to collect and transport excess water away from the building.

Sump Pump Installation and Battery Backup Replacement Example

Sump pumps are a part of the interior basement waterproofing service. Sump pumps are used to pump out the water that was collected in your basement. Broken sump pumps can lead to a flooding in your basement or cause mold & mildew growth. That’s why proper sump pump service & seems pump repair services should always be delivered in time. If you need help with sump pump installations or repairs in North York, get started with the 10% discount!

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

Installation of Backwater Valve or a Backflow Preventer

A backwater valve, also known as a backflow preventer or sewage check valve, is a plumbing device designed to prevent unwanted sewage or wastewater from flowing back into a building's plumbing system. It is particularly useful in areas prone to flooding or sewer system backups.

A waterproofer sealing the crawlspace of a building

If your property has a crawlspace, you need to take care of it. Due to the difficulty of the task, crawlspaces often don't have concrete floors, as a result, moisture can enter the space causing foundation damage, mold growth, and poor air quality on your property. Our team can help seal the crawlspace, install a dehumidifier, or convert the crawlspace into a full-sized basement. If you have a crawlspace, ask us how to make the most out of it!

Example of Basement Walkout

A basement walkout is a construction feature that allows direct access from a basement or lower level of a building to the outside, usually at ground level or slightly below. It's commonly found in buildings that are built into a slope or hillside, where one side of the building has a portion of its basement exposed due to the natural elevation change. An excellent way to convert your basement in a more usable space or maybe even into a rental unit


Waterproofing Materials Used in North York

Basement Waterproofing Materials in Our Projects

Long-lasting basement waterproofing solutions require the use of high quality basement waterproofing materials. Over time our team has hand-picked the best waterproofing products that we frequently use in our projects.

Our top choices include, but are not limited to Aqua Bloc 770-06 liquid waterproofing membranes, Delta MS Air Gap, DMX Drain, Parging Mix, top-quality 3/4 inch limestone gravel, Bakor 990-06 yellow Jacket Fibre Mesh and so much more.

These and other materials, along with top-quality workmanship help us deliver results that we stand behind with our 25-year warranty. 

Book your free basement waterproofing estimate today!

  • 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.

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Benefits for Our Clients in North York

Why Choose Aquamaster Basement Waterproofing?


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In Business Since 2009


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

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


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