top of page

Basement Waterproofing Thornhill

Repair Wet, Damp & Leaky Basements

Get basement waterproofing services from trusted experts. Working with clients from all around South Ontario our team of insured and licensed technicians can help with residential and commercial basement waterproofing work of any difficulty. Our waterproofing services come with a 25-year warranty and affordable financing options. While our top-quality basement waterproofing materials will give you confidence – your waterproofing is done to the highest quality standard.


Get a FREE estimate today!

Basement Waterproofing Experts

Satisfaction Guarantee.png
Proudly-Canadian copy-min_edited.png

When to Seek Waterproofing?

When to Get Basement Waterproofing Services Thornhill?

If you notice any signs of moisture, damp or wet basement or other water damage, it is a clear indication that you need basement waterproofing services in Thornhill. One of the most obvious signs is the presence of water or dampness on the walls or floor. You may also notice mold or mildew growth, a musty odor, or peeling paint.


Another warning sign is the appearance of cracks on the walls or floor, which can allow water to seep into your basement.


Additionally, if you have noticed any flooding or pooling of water in your basement after heavy rainfall, or snow melt it is crucial to address the issue as soon as possible. These signs indicate that water is finding its way into your basement, and if left unattended, can lead to extensive damage and compromise the structural integrity of your home.


Seeking professional basement waterproofing services can help you address these issues and prevent any further damage. Our team of insured experts can help diagnose the source of basement water leaks and repair wet basements of any difficulty.

Get a FREE estimate today!

How Much Wet Basement Repair Cost?

Cost of Basement Waterproofing Thornhill

Basement waterproofing in Thornhill costs from $70-$100 per linear foot. The cost of basement waterproofing can vary depending on various factors, such as the extent of the water damage, the size of the basement, and the specific waterproofing method chosen.


Factors such as the condition of the foundation, the presence of existing cracks, the need for sump pumps or drainage systems, and any additional repairs required can impact the final cost. It is recommended to contact reputable basement waterproofing companies in Thornhill for a professional assessment and accurate cost estimate tailored to your specific needs.

Waterproofing Cost Factors

Personalized Basement Waterproofing Solutions Thornhill

Advanced Basement Waterproofing Services

When it comes to basement waterproofing services in Thornhill, trust is of utmost importance. That's why we are proud to offer our trusted basement waterproofing services to homeowners in Thornhill and the surrounding areas (L3T, L4J and beyond). Our experienced and skilled team understands the unique challenges of basement waterproofing and is dedicated to providing reliable solutions. Whether you are dealing with dampness, leaks, or mold growth, we have the expertise to assess the issue and recommend the best course of action. With our top-of-the-line equipment and high-quality materials, we ensure that your basement remains dry and protected against water damage. Rest assured that our trusted basement waterproofing services will not only solve your immediate waterproofing needs but also provide long-lasting results for years to come. Contact us today to schedule an appointment and take the first step toward a dry and secure basement.


Opting for exterior basement waterproofing in Thornhill is crucial to protect your home's foundation from water damage. This service creates a barrier on the outside of your basement walls, preventing water from infiltrating into your basement. By keeping moisture out, you can avoid issues like mold growth, foundation cracks, and structural damage.

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

Basement Underpinning Project in Progress near Nathan Phillips Square in Toronto

Basement lowering is a valuable service for homeowners in Thornhill looking to increase their living space. This process involves excavating the existing basement floor and creating additional headroom. Choosing basement lowering not only adds usable living space to your home but also provides an opportunity to implement waterproofing measures during the process, ensuring a dry and functional basement environment.

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


Window wells provide proper drainage and prevent water from accumulating around basement windows. Opting for window well installation in Thornhill improves basement waterproofing by reducing the risk of water infiltration through basement windows. Additionally, it enhances safety and natural light in your basement space.


Plumbing rough-ins involve the installation of the initial plumbing lines and connections during the construction or renovation of your basement in Thornhill. Opting for plumbing rough-ins is necessary to ensure proper water supply, drainage, and sewage systems in your basement, contributing to its functionality and efficiency.


Basement wall removal is a service that allows for open-concept basement designs or structural modifications in Thornhill. Opting for basement wall removal should be done with the guidance of a professional to ensure the structural integrity of your home. It provides flexibility in the basement layout and allows for better implementation of waterproofing strategies during renovations.

Basement Wall Cut Out Cost - $1,000+


Interior waterproofing is an effective solution for managing water that has already entered your basement in Thornhill. By installing a drainage system, such as a French drain or sump pump, interior waterproofing directs water away from your basement, preventing flooding and potential water damage. This service is essential for maintaining a dry and habitable basement space.

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


Foundation issues can compromise the structural integrity of your home in Thornhill. Opting for foundation repair services is crucial to address foundation cracks, settlement, or other structural problems. By fixing foundation issues, you can prevent water seepage into your basement, ensuring the stability and durability of your home.

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


Basement leaks can cause significant damage if left unaddressed. Opting for basement leak repair services in Thornhill is crucial to identify the source of the leak and implement the necessary repairs. By fixing leaks promptly, you can prevent water damage, mold growth, and structural issues in your basement.

Waterproofing Contractors installing a weeping tile in front of CN Tower

Weeping tile installation is a vital basement waterproofing service in Thornhill. It involves placing a drainage system around the perimeter of your basement, collecting groundwater and directing it away from your foundation. This prevents water seepage, protects the basement from flooding, and maintains a dry and secure living space.

Weeping Tile Installation Cost: $1,500-$4,000/wall

Custom Window Well Toronto.jpeg

Our team of experienced technicians can handle a waterproofing project of any difficulty. From interior and exterior basement waterproofing to foundation repairs, basement walkouts and more. Get a FREE estimate today!

Cost of Waterproofing Services


Sump pump installation is a crucial aspect of basement waterproofing in Thornhill. By removing groundwater and preventing basement flooding, sump pumps safeguard your basement from water damage. Getting sump pump installation services ensures prompt water removal, reducing the risk of mold growth, foundation damage, and property loss.

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


Backwater valve installation is essential for homeowners in Thornhill to protect their basements from sewage backups. This device allows sewage to flow out but prevents it from reentering your basement, mitigating the risk of contamination and water damage. Choosing backwater valve installation is crucial to maintaining a clean and safe basement environment.

Crawlspace Insulation Toronto GTA Ontario Example.jpeg

If your Thornhill home has a crawlspace, encapsulation is a beneficial service. It involves sealing and insulating the crawlspace to prevent moisture, pests, and air infiltration. Crawlspace encapsulation improves energy efficiency, indoor air quality, and protects your home from issues like mold and structural damage.

Crawlspace Encapsulation Cost


Basement walkout construction in Thornhill adds accessibility and functionality to your basement. It involves adding an exit or access point from the basement to the outside. Opting for basement walkout construction not only enhances convenience but also allows for proper waterproofing measures during the construction process, ensuring a dry and usable space.


Waterproofing Products Thornhill

Favourite Thornhill Basement Waterproofing Materials

When it comes to top basement waterproofing materials in Thornhill, several options stand out for their effectiveness and durability.


One popular choice that many of our clients get is exterior waterproofing membranes, which provide a protective barrier against water infiltration from the outside. These membranes are typically made of rubberized or polymer-based coatings that are applied to the exterior walls.


Another favorite material is interior drainage systems, such as French drains, which collect and divert water away from the foundation. Additionally, epoxy injections are commonly used to seal cracks and prevent further water penetration and repair basement wall and floor cracks.


Waterproofing paints and sealants are also popular in Thornhill. They are applied to basement walls to create a moisture-resistant barrier. With the help of these top-notch materials, Thornhill residents can safeguard their basements from water damage and ensure a dry and livable space.


View some of our most popular waterproofing products today!

Thornhill Service Area + All of Ontario

Proudly Serving Thornhill, Ontario

bottom of page