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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

    - Your Complete Deck,Fence And Interior Renovation Experts!** At Cosmos Construction, we specialize in enhancing your home with stunning decks, durable fences, and beautiful interior renovations. Our dedicated team combines quality craftsmanship with exceptional service with over 8 years servicing Toronto and Surrounding Area. **Our Services:** - **Custom Decks:** Personalized outdoor spaces for relaxation and entertainment. - **Durable Fences:** Stylish and secure fencing solutions. - **Interior Renovations:** Transforming your home with modern designs and upgrades. **Why Choose Us?** - **Customer-Focused:** We work closely with you to realize your vision. - **Competitive Pricing:** High-quality services at great value. - **Satisfaction Guaranteed:** Your satisfaction is our priority. Elevate your home with Cosmos Construction. Contact us today for a free consultation!

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    We specialize in concrete repairs, balcony restoration, waterproofing, epoxy and traffic coatings, caulking, railing installation, masonry repairs, and general construction services. Our team is committed to delivering high-quality workmanship, reliable service, and safe job-site practices on every project. We take pride in being honest, dependable, and detail-oriented. Whether you need a small repair or a large-scale restoration project, we work closely with our clients to ensure the job is completed on time, on budget, and to the highest standards.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Welcome to DOD Construction — your trusted team for quality, detail-oriented finishing work in the Greater Toronto Area. We specialize in: • Interior and exterior painting • Window installation • Caulking & sealing (interior/exterior) With years of hands-on experience and a passion for precision, we take pride in delivering clean, efficient, and long-lasting results. Whether you’re renovating a home, upgrading your windows, or simply refreshing a space — we’re here to get the job done right. We work with homeowners, contractors, and property managers — and we always focus on clear communication, punctuality, and fair pricing. 📍 Based in Toronto, proudly serving surrounding areas. Let’s build something great together — contact DOD Construction today for a free estimate!

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Albert Hamilton is a North York based Landscaping Company, Mason, Concrete Specialist, General contractor, Flooring Contractor, Tiler, Paving Contractor & Pool company company. Our goal is to provide quality service and excellent workmanship to our customers. If you need help with install concrete floor, pave outdoor and garden, landscape curbing & brick and stone flatwork repair, message us so we can assist you and arrange a quote.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    I've been working in the construction industry for 5 years and during those 5 years I have learned and master multiple skills. My construction journey started as an insulator where I've been doing projects for private houses. I also worked in residential framing and i developed my carpentry skills. Installing drywall is another skill in my pocket.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    We are a new company but with a team of professionals with years of experience in insulation. We are sure that your project will pass any inspection because we work with the best quality.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    With over 10 years of experience in demolition and concrete work, we deliver reliable, high-quality results for every project. Our skilled team is committed to safety, precision, and customer satisfaction from start to finish.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    I’m Saeid, your hardworking assistant and repair man to help you with your home stuffs. I’m working in this industry for over 10 years, I did a lot of painting, renovation, assembling the furniture, handyman jobs and anything related to this work! I can work in GTA are, or even out as I have a car to move around. Regardless of time, I’ll make sure that your work and things fixed properly

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    We are a reliable and experienced construction company based in Toronto. We specialize in drywall, flooring installation, concrete work, paving, and general home renovations. We take pride in delivering clean, high-quality work with attention to detail. Whether it’s a small repair or a full project, we ensure professional results and fair pricing. We are available anytime and ready to take on your project.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    We build and redesigned your place interior We can build anything

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    We work with quality, we understand the economy, we are clean with 9 years of experience, and we solve problems.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    🏡 Daniel’s Handy Services – Your One-Stop Solution! 🛠️ Services Offered: Handyman Work: Repairs, installations, maintenance – no job too small! Painting: Interior & exterior painting, residential & commercial. 🚚 Moving – Packing, loading & unloading Excavating: Land clearing, digging, grading – reliable and efficient. ✅ Affordable Rates | ✅ Professional & Reliable | ✅ Satisfaction Guaranteed. “From fixing your home to boosting your health, we do it all!”

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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

    Aaron's Prefabricated Outdoor Structure Building Service description The service I am providing is installing prefabricated Outdoor Structures like Sheds, Gazebo, Pergolas, and Solariums from big box stores such as Home Depot,Rona,Canadian tire. If base is needed or wanted for Structure prices will vary. Small Size Outdoor Structure Size and prices Sizes (feet) - 3x2 - 7x9 Price to install Outdoor Structure - 300 Medium Size Outdoor Structures size and pricing Sizes (Feet) - 10 x 10 - 12 x 12 Price to install Outdoor Structure - 500 Large Outdoor Structures Sizes and Pricing Sizes (Feet) - 13x13 - 25x12 Price to install Outdoor Structure - 900

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Murphy's Masonry is a total package residential and commercial masonry contractor servicing the GTA. Our mission is to supply our customers with top quality services at a competitive price. To develop relationships with our clients and our employees that are based on honesty, commitment and loyalty. We will collaborate with you from the beginning phases of your project to the end.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    At Faraj Home Services, we’re dedicated to transforming the outdoors of your home into welcoming, inviting, and practical spaces. We provide a comprehensive range of landscaping and construction services to residential properties across the Greater Toronto Area (GTA) including Toronto, Richmond Hill, Vaughan, Newmarket, & more. Discover how we can elevate your property with our personalized approach to landscaping. As we are based in Richmond Hill, we proudly serve York Region and the surrounding GTA area. Faraj Home Services is the best choice for your next exterior construction and landscaping project because it is our specialty. Contact us today for a free complimentary quote!

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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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