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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

    I provide professional roofing services with a focus on quality workmanship, honest advice, and reliable customer service. Whether you need roof repairs, a complete roof replacement, emergency roofing assistance, or a thorough roof inspection, I'm committed to delivering durable solutions that protect your home. I take pride in using quality materials, paying attention to every detail, and ensuring every project is completed safely, efficiently, and to the highest standard. If you're looking for a dependable roofing contractor, I'm here to help.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Toronto’s Fastest & Most Affordable Paving and Concrete Company! Looking for top-quality paving and concrete at the lowest prices in the GTA? Look no further! We specialize in: ✅ Driveways ✅ Backyards ✅ Parking Lots ✅ Walkways ✅ Commercial & Residential Paving ️Fast Turnaround Top-Notch Quality Great Customer Service. Lowest Prices Guaranteed Serving Toronto & the GTA, we beat any written quote — without cutting corners. Our experienced crew gets the job done right and fast. With 15 years of experience in asphalt, paving, and foundation work, we deliver top-quality results that stand the test of time. Whether it’s a brand-new driveway, a smooth parking pad, or a solid foundation — we’ve got you covered. Book Today & Save Big!

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    SLCoating is a driveway care service focused on sealcoating, pressure washing, and exterior cleaning work. The goal is to restore worn asphalt, improve curb appeal, and help protect surfaces from weather damage and aging. Services also extend to basic car detailing and cleaning add-ons depending on the job.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    My name is Emeka Christian Igwe-Nweke, and I reside in Toronto, Ontario. I hold a degree in History and International Relations, as well as a diploma in Network and Cloud Administration. Additionally, I am a licensed Security and Private Investigator in Ontario. Thank you.

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  • Basement Waterproofing Specialist in Thornhill, Ontario
    • Best of the Best 2024
    • Best of Awards 2026

    Thank you for taking the time to visit our Homestars page! We appreciate any opportunity to provide a free quote for your wet basement waterproofing and foundation crack repair. Dryshield is a Family owned and operated basement waterproofing company Toronto and most of southern Ontario. We pride ourselves on our basement waterproofing and foundation crack repair workmanship. Our mission is to continue providing you with the highest quality products, technologies and procedures at the most competitive price for your wet basement waterproofing needs. We offer a wide range of solutions for your leaky or wet basement. Some of the solutions are; internal drainage systems, external waterproofing, window wells, basement crack repair and sump pumps. www.dryshield.c a All of our work provided is Dryshield employed and not by subcontractors. Our team at Dryshield works hard day in and day out to provide you with the highest quality of workmanship. We are fully licensed and insured. All prices are up front with no hidden surprises. Dryshield can beat any quality competitor with a difference in cost and quality. Things to look for that can be contributing to your wet basement: - Are your down spouts discharging at the side of your house or are they connected to the ground? - Is the grade sloping towards your house causing a wet basement? - Do you see any signs of a foundation concrete crack? - How old is your home is and what condition are your weeping tiles are in? If you have a wet basement and need a waterproofing company for your basement waterproofing needs contact Dryshield today! waterproofing, Basement waterproofing, waterproofing toronto, foundation waterproofing contractors, commercial waterproofing, waterproof basement, wet basement waterproofing Toronto, basement waterproofing, interior basement waterproofing, waterproof basement, exterior waterproofing. Leaking basement, concrete crack repair, basement wall crack repair wet basement, wet carpet, dry basement, cracks, leaks, crawl space, crack injections, foundation, repair, house, home, concrete waterproof, foundation waterproof, sump pumps, water crawl space, crawl space water, wet crawl space, basement wall leak, carpet water damage, damaged water, foundation leak, foundations leaks, water damage, water damage repair Waterproofing | Toronto Waterproofing | Foundation waterproofing | Wet basement | Waterproofing a basement | Waterproofing basements | Waterproofing the basement |Basement leak | Basement leaking | Foundation repair | Basement waterproofing |Leaking basement | Waterproof basement | Crawl space | Concrete crack repair Repair concrete cracks | Crack repair restoration & sealing | mould-control & removal | Cracks in foundation | Basement cracks

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    We are a reliable and detail-oriented cleaning service committed to delivering spotless results every time. We specialize in residential cleaning, using safe and effective products to protect your home, family, and pets. Our goal is simple: quality work, honest pricing, and complete customer satisfaction. Professional. Efficient. Trusted.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    I am a construction professional with 5 years of experience in drywall, taping, and painting, committed to quality, excellent finishes, and meeting deadlines. I am known for being responsible, punctual, and detail-oriented, always delivering clean and well-executed work. I have excellent references from satisfied clients, which attest to the professionalism and quality of my projects.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    InnoGreen Solutions operates as an Ontario-based residential mechanical and building science partner, providing whole-home infrastructure upgrades across the Greater Toronto Area, Golden Horseshoe, Niagara Region, and Cottage Country. Engineered specifically for the demands of the Canadian climate, the firm manages the multi-disciplinary requirements of modern residential properties—spanning high-efficiency climate control, domestic water systems, building envelope optimization, and energy program administration. The company’s technical scope encompasses the installation of cold-climate heat pumps, high-efficiency gas furnaces, central air conditioning, multi-zone ductless mini-splits, tankless water heaters, hybrid heat pump tanks, whole-home water filtration, blown-in attic insulation, and precision air-sealing. Rather than relying on guesswork, InnoGreen Solutions utilizes an assessment-first methodology to evaluate a property's true thermal load, pairing clear, itemized proposals with seamless navigation of energy advisor assessments, provincial rebates, and financing options. TSSA contractor - 313D - 2M Liability Insurance - WSIB - All technicians G or G2 certified. Background Checked.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Our company is dedicated to deliver excellence in everything we do. We pair exceptional craftsmanship with passion in fulfilling our clients dreams.Turning visions to life.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Puedes usar algo como esto en inglés para HomeStars: We are a young and growing company built on years of hands-on experience in the construction industry. Before starting our own business, we dedicated ourselves to learning every aspect of the trade, working alongside experienced professionals and developing the skills needed to deliver high-quality results. Today, we take pride in providing reliable concrete services with attention to detail, honest communication, and a commitment to customer satisfaction. Whether it’s a new driveway, garage floor, walkway, or concrete repair, we treat every project as if it were our own. O una versión más cercana y personal: We are a young company founded on hard work, dedication, and years of experience in concrete and construction. After spending many years learning the trade and perfecting our skills, we decided to start our own business to provide quality workmanship and dependable service directly to homeowners. Our goal is simple: deliver durable, professional results while building long-term relationships based on trust, honesty, and customer satisfaction. No project is too small or too large—we are committed to getting the job done right.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    The Contractor with 5 years of experience will take care of your renovation projects and task from start to finish. Quality workmanship ano competitive pricing. We accept renovations for bathrooms, basements as well as other home improvement projects. Services include : -Furniture assembly -Moving -Tv mounting -Bathroom Renovations -Shower renovation -Basement finishing - Plumbing services -Electrical -Pot Lights -Tiling -Framing -Insulation -Drywall, -Taping -Trims & Baseboards -Primer & Painting -Kitchen Backsplash -Vanity, Sink installation -Bathroom Fan installation -Toilet installation -Decks and stairs

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    ELJ Contracting delivers high-quality craftsmanship, reliable project management, and tailored solutions for your residential and commercial needs. From concept to completion, we pride ourselves on clear communication, attention to detail, and building spaces that last.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    I specialize in painting, tiling, carpentry, and general building services. With hands-on experience in both small repairs and larger renovations, I focus on delivering quality workmanship, clean finishes, and reliable service for every project.

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  • Basement Waterproofing Specialist in Thornhill, Ontario
    • Best of the Best 2025
    • Best of Awards 2026

    !!! WE WILL BEAT OR MATCH ANY WRITTEN QUOTE GUARANTEED* !!! We are company with 25 years of experience. Specializing in waterproofing residential and commercial structures. -competitive prices -written FREE estimate prior to starting -written guarantee on completion -basement made permanently dry from the inside or outside with or without digging

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Structural engineering firm focusing on residential projects, solar, project management and home renovations.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Dominex Concrete & Construction is a family-owned company proudly serving homeowners and businesses across the Greater Toronto Area. We specialize in concrete sidewalks, driveways, curbs, concrete pads, stairs, repairs, removal and replacement. We approach every project—large or small—with hard work, honesty and attention to detail. For us, concrete work is more than completing a job. It is about earning your trust and delivering a strong, clean and professional result that you can feel proud of. We communicate clearly, respect your property and work closely with you from the initial estimate through project completion. When you choose Dominex, you receive dependable service, quality workmanship and a team that treats your project as if it were our own. Contact us today for a free estimate. Let’s build something strong together.

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4.7

Top rated Basement Waterproofing Specialists

Our Basement Waterproofing Specialists in Thornhill, Ontario, are rated 4.7 out of 5 based on 45 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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