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Find basement waterproofing pros in Thornhill, Ontario

If you’re looking to protect your basement from leaks, floods, or humidity, HomeStars can help. Our platform allows you to easily connect with professionals who can help with basement waterproofing in Thornhill, Ontario. Compare quotes, read reviews, and make the hire all in one convenient place!

Closeup of a worker’s gloved hands waterproofing the bottom of a concrete wall with blue sealant.

Some of our top rated basement waterproofing specialists in Thornhill, Ontario

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    DESIGN - BUILD - RENOVATION - STRUCTURAL ENGINEERING - Estezo Estates (2009) is a Family Company that designs and builds strong, safe, highly energy efficient, green, LEED-compliant custom homes in the Greater Toronto Area. Established by a Father-son duo, Estezo Estates started out as a high end renovations company. Orlando, who has an engineering background, and his son Jerson who has extensive design and construction experience, started a renovations company in 2009 and it quickly turned into a full service construction company with its very own in-house design department. Estezo Estates will help you realize the full potential of your dreams, captivate your emotions, pushing the boundaries of your imagination. Estezo Estates is the right choice for HIGH ENERGY EFFICIENT ELEGANT homes and workspaces! We have combined the theory of design with actual real life on site building experience, bridging the long standing gap between designers and builders all under one roof, Estezo Estates. CONSTRUCTION Our homes are designed with cutting-edge structural technology offering the safest, strongest and most energy efficient construction in its class. Our home designs offer brighter, more spacious layouts opening you up to the elements. The Structural strength of our builds, far surpass the majority of other homes built in Canada. RENOVATIONS We can help redesign your home with green building methods and materials in tune with nature and current environmental trends. Saving you money! Connect with us today, and we will help start you on your journey towards better living.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    I do underground and above-ground plumbing work. I install pumps for drainage, waterproof houses, and repair cracks in concrete.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    we transform your residential and commercial spaces with expert craftsmanship. From stunning outdoor transformations like interlock, sod installation, fences, and decks, to detailed interior renovations including drywall, laminate flooring, professional painting, and custom wall designs. We handle it all with precision and care. Our mission is to bring your vision to life with quality results that last. Contact us today for your next project!

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    15 years framing and concrete forming joined local 183 in 2010

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    High Quality Grass Cutting All of your landscape needs! We deliver/Install materials as well Now is the perfect time to dethatch your lawn to boost health and growth going into this spring/summer season! Call, Text or Email today! Free quote book today, spots are filling up!

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    RESIDENTIAL AND COMMERCIAL LEGAL BASEMENT APARTMENTS CONCRETE , FENCE AND DECKS. WE DESIGN BUILD AND RENOVATE RESIDENTIAL AND COMMERCIAL PROPERTIES. HELLO HOW ARE YOU OUR COMMUNITY. VIRK HOMES AIM TO FULFILL THE REQUIREMENTS OF PROFESSIONALISM YOU ARE LOOKING FOR RENOVATIONS IN YOUR HOMES. WE HAVE A TEAM OF AROUND 10 PROFESSIONAL AND EXPERIENCED EMPLOYEES. CONTACT US TO GET YOUR RENOVATIONS AND MODIFICATIONS OF YOUR HOUSE WITH UTMOST QUALITY.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Elsa Roofing brings decades of hands‑on experience to every project. Our supervisors each have over 25 years in the industry, and every job has more than 40 years of combined expertise on site. We provide residential and commercial roofing services, including repairs and replacements, eavestrough work, soffit and fascia, siding, ventilation improvements, and insulation upgrades. Our team delivers skilled workmanship, clear assessments, and dependable results. We proudly serve Keswick, Sutton, Jackson’s Point, Pefferlaw, Udora, East Gwillimbury, Holland Landing, Queensville, Sharon, Mount Albert, Newmarket, Aurora, Bradford, Barrie, Innisfil, Angus, Midhurst, Springwater, Oro‑Medonte, Essa, Alliston, Cookstown, and surrounding communities. We offer fair pricing, clean job sites, and strong 10‑year workmanship warranties. With free estimates and a reputation built on integrity, you can trust Elsa Roofing to protect your home with experience you can rely on. Our installations consistently meet—and often surpass—current building code requirements, and we use trusted Canadian products. We encourage homeowners to explore our reviews and visit our website to see the level of service we’re known for.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    I offer my 20 years of experience in the construction industry, where I have gained extensive knowledge in the care of general building maintenance. We can offer installation of hard surfaces, such as sidewalks, stairs, railings, patios whether in restoration, replacement, or new designs. Also we do Epoxy floors, foundation repair, basements water leaks, walkouts basements, retaining walls, concrete decking, concrete curb, slab, pad. We are a landscaper lover with great ideas or we can make yours dreams come to reality vision. Highlighting a high level of discipline , respected and dedication to our work. We love what we do. And get committed with or customers.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Welcome! I’m Nikola Masevski, owner of APM Construction. With over 7 years of hands-on experience in the construction industry, I have had the privilege of transforming countless homes through top-notch interlock work, concrete services, hardscaping, and pool designs. For the past 3.5 years, APM Construction has been dedicated to delivering high-quality results with an unwavering commitment to customer satisfaction. I take great pride in our reputation, which is backed by hundreds of positive testimonials from satisfied clients. Our team works hard to ensure that every project, big or small, is completed with attention to detail and exceptional craftsmanship. Whether you’re looking to enhance your outdoor space with a beautiful new patio or transform your interior with stunning bathroom renovations or sleek new flooring, we’ve got you covered. Your vision is our priority, and we strive to bring it to life with expertise, reliability, and a focus on excellence. Let’s work together to make your dream project a reality!

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    I am a local contractor located in Oshawa, I have been in construction for about 10+ years servicing all around the GTA and Clarington. The goal is to turn the customers house into a home they can relax in and enjoy! Please contact me for construction needs such as: -concrete -carpentry -landscaping -outdoor/indoor home improvements -repairs -demolition

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Since 15 years, at Credcon Contracting we specialize in high-quality home renovations, custom builds, and restoration services across the GTA. With a strong focus on craftsmanship, transparency, and client satisfaction, our team brings years of hands-on experience to every project. Whether it’s transforming a dated space, building from the ground up, or restoring a property after damage, we’re committed to delivering results that last. We proudly serve homeowners, real estate investors, and insurance providers with a reliable, solutions-driven approach to construction.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    We provide expert concrete services, including walls, slabs, stairs, underpinning, ICF construction, waterproofing, and demolition, delivering durable and reliable solutions for residential and commercial projects.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    We are a trusted roofing and masonry company serving residential and commercial clients. Specializing in roofing, brickwork, stonework, chimney repairs, and masonry restoration, we deliver quality workmanship, dependable service, and lasting results. Our focus is simple: doing the job right the first time and exceeding our customers’ expectations on every project.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Quercia Contracting is a concrete based Handyman, Mason, Concrete Specialist, General contractor, Excavation Specialist, Landscaping Company, & Demolition company company. Our goal is to provide quality service and excellent workmanship to our customers. We specialize in concrete pouring and finishing Slabs pads garages basements walkway driveway sidewalks concrete and drain work concrete breaking and removal

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    From your needs to your wants, we got you covered.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    MCL Concrete Ltd is a premier concrete company with a solid reputation for excellence in the industry. With nine years of experience serving clients in Waterloo, Kitchener, Guelph, Milton, Mississauga, Oakville, Burlington, and Hamilton, we have established ourselves as a trusted partner for all concrete needs. From residential projects to commercial developments, our commitment to quality, reliability, and customer satisfaction sets us apart in the market. Services: At MCL Concrete Ltd, we offer a comprehensive range of concrete services tailored to meet the diverse needs of our clients: Concrete Installation: Whether you need a new driveway, patio, sidewalk, or foundation, our team has the expertise to handle all aspects of concrete installation with precision and efficiency. Decorative Concrete: Enhance the aesthetic appeal of your property with decorative concrete solutions such as stamped concrete, exposed aggregate, colored concrete, and more. Concrete Repair and Restoration: Extend the lifespan of your concrete surfaces with our repair and restoration services. From crack repair to resurfacing, we can revitalize your existing concrete and make it look like new again. Commercial Concrete: We specialize in providing concrete solutions for commercial projects, including parking lots, sidewalks, curbs, ramps, and other infrastructure needs. Concrete Sealing and Protection: Protect your investment and maintain the beauty of your concrete surfaces with our sealing and protection services. We use high-quality sealants to guard against moisture, stains, and other damage. Why Choose Us: Experience: With nine years of experience in the industry, we have the knowledge and expertise to deliver superior results on every project. Quality Assurance: We are committed to using the highest quality materials and adhering to industry best practices to ensure the durability and longevity of our concrete installations. Reliability: Our team is dedicated to delivering projects on time and within budget, minimizing disruptions to your schedule and maximizing your satisfaction. Customer Service: We prioritize clear communication, transparency, and responsiveness, ensuring that our clients are informed and involved every step of the way. Wide Service Area: With our extensive service area covering Waterloo, Kitchener, Guelph, Milton, Mississauga, Oakville, Burlington, and Hamilton, we are well-positioned to meet the needs of clients across the region. Contact Us: Ready to start your next concrete project? Contact the team at MCL Concrete Ltd today to schedule a consultation. We look forward to partnering with you to bring your vision to life!

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4.9

Top rated Basement Waterproofing Specialists

Our Basement Waterproofing Specialists in Thornhill, Ontario, are rated 4.9 out of 5 based on 35 reviews from homeowners like you.

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What basement waterproofing services are available in Thornhill, Ontario?

Pros can waterproof basements from the interior, the exterior, or using a combination of techniques. The right service depends on whether you need full waterproofing or just touch-ups.

Here are some common basement waterproofing services in Thornhill, Ontario:

  • Installation of interior drainage systems: a perimeter drain installed along the interior footing collects and redirects water to a sump pit for removal.
  • Sump pump installation and replacement: often handled by a [plumber](https://www.homestars.com/plumbing/plumber-pros/Thornhill, Ontario), a pump installed in the sump pit removes accumulated groundwater and directs it away from the foundation.
  • Exterior waterproofing: excavation around the foundation allows for membrane application and drainage board installation to block water at the source.
  • Crack injection: epoxy or polyurethane foam is injected directly into foundation cracks to seal them against water intrusion.

No matter your needs, it’s easy to find basement waterproofing pros near you who can help. Just post your project on HomeStars now, and available contractors in your area can reach out!

What are the average costs of basement waterproofing pros in Thornhill, Ontario?

Basement waterproofing costs vary widely depending on the method, the size of the foundation, and where repairs are concerned, the extent of the damage. Labour typically runs between $50 and $150 per hour, depending on the service and complexity of the job. Materials and equipment, such as excavation machinery, may add additional costs.

Typical costs for common basement waterproofing services in Thornhill, Ontario:

  • Installation of interior drainage systems: between $3,000 and $10,000 for a full perimeter system in an average-sized basement
  • Sump pump installation and replacement: between $500 and $2,000 depending on pump type and whether a backup system is included
  • Exterior waterproofing: between $10,000 and $30,000 depending on foundation size and depth of excavation required
  • Crack injection: between $300 and $800 per crack depending on length, depth, and material used

HomeStars tip: To ensure you get the most accurate costs for Thornhill, Ontario, make sure to get everything written down in an itemized quote. This avoids misunderstandings and supports transparency and clear communication for both you and the contractor.

How to find basement waterproofing specialists in Thornhill, Ontario with HomeStars

Finding a basement waterproofing pro in Thornhill, Ontario can feel overwhelming, especially when water damage requires prompt attention. HomeStars makes it easy to connect with the right pro for your project. Just follow these simple steps:

  1. Start by posting your project. Provide a clear description of your basement waterproofing needs and, if possible, include photos to get precise quotes.
  2. Receive offers from available pros, review work history, and read customer feedback for basement waterproofing in Thornhill, Ontario.
  3. Connect with basement waterproofing specialists in Thornhill, Ontario to discuss your project, request and compare quotes, and ask any questions.
  4. Hire the right pro to get the job done and leave a review based on your experience.

HomeStars tip: Once your project is done, make sure to leave a review. Our review system ensures that pros are rewarded for good work and held accountable for any problems.

Pros on HomeStars undergo checks at registration – such as ID documents, company details, and certifications for regulated jobs and skill assessments – allowing you to hire with confidence.

Extra peace of mind with the HomeStars Confidence Program

The HomeStars Confidence Program is designed to give you added confidence when hiring through our platform. If your job qualifies under the Program and we determine that a claim meets the Program requirements, HomeStars may cover what you owe the Pro on an eligible job with a quote of up to CAD $10,000, in line with our terms and conditions.

FAQ: Common questions about basement waterproofing in Thornhill, Ontario

How long does basement waterproofing last in Thornhill, Ontario?

Most professional waterproofing solutions in Thornhill, Ontario are designed to last 10 to 25 years depending on the method used and the quality of installation. Sump pumps typically require replacement every 7 to 10 years.

Will waterproofing fix existing mould in my basement?

Waterproofing addresses the source of moisture but will not remove mould that has already formed. A separate mould remediation service is typically required before or after waterproofing work is completed.

What if my basement waterproofing project in Thornhill, Ontario requires excavation?

Exterior waterproofing projects in Thornhill, Ontario often require excavation around the foundation, which adds complexity, time, and cost to the overall job. It is important to work with pros who can coordinate this process effectively. [Local excavation specialists](https://www.homestars.com/gardening-outdoors/excavation-specialist-pros/Thornhill, Ontario) are available on HomeStars to walk you through what to expect and collaborate with your preferred basement waterproofing pro.

Does homeowner insurance cover basement waterproofing in Thornhill, Ontario?

In most cases, standard home insurance policies do not cover waterproofing as it is considered a maintenance issue rather than sudden damage. However, water damage resulting from a specific event such as a burst pipe may be covered. It is worth reviewing your policy or speaking with your insurance provider for clarification.

How do I know if a basement waterproofing pro is right for my project?

Not all waterproofing projects are the same, and finding a pro with the right experience for your specific situation is important. Reading reviews from homeowners who have had similar work done can help you make a more informed decision. Browse basement waterproofing pros on HomeStars to compare ratings and reviews from real homeowners in Thornhill, Ontario.

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