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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

    My name is Shaun, and I’m a professional contractor serving the Greater Toronto Area and surrounding regions. With over a year of hands-on experience, I’ve built a reputable and fast-growing business rooted in quality, reliability, and customer satisfaction. I specialize in epoxy flooring, including flake systems and metallic finishes, offering durable and visually striking results. I also have strong expertise in landscaping—from interlock and stonework to grading, sod, and retaining walls—executed with precision by our skilled team. As part of Verified Canada, a trusted contracting group, we also offer licensed electrical services, including panel upgrades, lighting, rewiring, and more. Our team of certified professionals ensures every job meets the highest standards. Verified Canada operates several divisions, including @epoxy.verified on Instagram, and collaborates with some of the most respected trades in the region. We are committed to excellence, professionalism, and delivering results our clients can trust!

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Rockridge Valley Marble And Granite Inc. With over 10 years of experience, believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. We can help you with your wall or floor tiling, install countertops, repair wall or floor tiles & repair countertops request in Mississauga and its surrounding cities. They’re at your disposal to listen and assist you in all your projects. Get in touch with Rockridge Valley Marble And Granite Inc. now to discuss your needs and arrange a quote. We look forward to working with you!

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    OUR FREE “IN-HOME” COLOUR CONSULTATION AND SHOPPING SERVICES Over the years, we have recognized that our clients’ have had a difficult time choosing the best colour and we have made it possible to remove the fear from all our clients’ by offering free colour consultations with one of our trained paint-colour experts. We also offer free shopping services with one of our paint-colour experts that will accompany our clients to order the paint. In addition, we can also order the paint from our manufactures. We strive to delivery the best services, so we always provide the latest most talked about design and colours based on the top stagers and designers we have worked with over the years. By doing this we help reduce our clients stress of selecting the best colors for the complete design they are looking for. We Provide Eco-friendly Painting In order to promote the safety of our environment, as well as the safety of our clients and employees, we also use paint products that contain either zero or minute traces of volatile organic compounds(VOCs) and although our painters wear protective masks, paints that contain VOCs can emit their toxins weeks after the paint has dried, affecting you and your family. Benefits to Using Zero or Low VOC Paints: ​ No harsh odours emanate from low VOC paint. Chemicals that form smog are eliminated. More cost-effective than traditional high quality paint Drastic increase in indoor and outdoor air quality Promotes environmental preservation and sustainability UNDERGROUND PARKING GARAGES, ELEVATORS AND WAREHOUSES OFFICE BUILDINGS STORES AND RETAIL INDUSTRIAL BUILDINGS ENTRANCE, SCREEN, AND PATIO DOORS MEDICAL OFFICES RECEPTION AND LOBBIES

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Paulo E. Schmitt is a full-service renovation and project management company serving homeowners with quality craftsmanship and dependable service. With over 50 years of combined industry experience, we specialize in complete home renovations, including kitchens, bathrooms, basements, additions, framing, finishing, flooring, painting, trim, windows, doors, and more. We manage every stage of your project, from planning and budgeting to construction and final completion, ensuring clear communication, quality workmanship, and attention to detail throughout. Whether you're renovating a single room or transforming your entire home, our goal is to deliver exceptional results, on time and on budget. At Paulo E. Schmitt, we treat every home as if it were our own and take pride in building lasting relationships through honesty, reliability, and superior workmanship.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Pristine Landscaping offers interlocking stone, concrete, retaining walls, and sod services in Durham region, York region, and Scarborough.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Dm us

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    North Peak Solutions is a locally operated roofing and exterior home improvement company serving homeowners throughout Simcoe County and surrounding areas. We specialize in roofing, siding, roof repairs, and exterior home services. Our goal is simple — provide quality workmanship, honest communication, and reliable service from the initial estimate to project completion. We offer free estimates and take pride in treating every home as if it were our own. 📍 Serving GTA, Barrie, Midland, Tiny, Wasaga Beach, Blue Mountains and surrounding areas. Contact North Peak Solutions today for a free estimate

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    We are a European company focused primarily on the quality of work performed. Our motto is Quality, Punctuality, Speed, Respect for customers.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Skeine’s Construction serves Brampton, Mississauga, Caledon & nearby GTA. Exterior: Interlock repair & re-level, polymeric re-sand, clean & seal; power washing for driveways, walkways & patios; concrete pads (10×10–12×12), porch/step repair. Interior: Drywall patching & taping, ceiling/water-damage repairs, interior painting (rooms/ceilings/trim), backsplash tile, window/door adjustments & caulking. Bathrooms: Tub/shower tile & waterproofing, grout/caulk refresh, vanity & toilet installs, fan replacement, small layout refreshes. Flooring: Luxury vinyl plank & laminate installs, tile floors, subfloor leveling, transitions, baseboards & caulking. We’re insured, arrive on time, protect your home, and leave it spotless. Free on-site estimate within 24 hours with a written quote.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Our team has over 10 years of professional experience serving the GTA area. We are a general contracting company specializing in full basement renovations and complete bathroom remodeling. We are also concrete experts, providing services such as sidewalks, foundations, and separate entrances. In addition, we build high-quality wood and composite decks. We take pride in delivering reliable service and high-quality workmanship on every project.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Tile flooring for residential and commercial Hardwood flooring for residential and commercial Concrete polishing for residential and commercial floors. Epoxy flooring systems for garages, basements, and industrial spaces. Self-leveling concrete for smooth, level surfaces. Grinding, coating removal, concrete cutting, and chipping. Moisture and vapor barrier installation. Clean workmanship. Strong, level, long-lasting results

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Transform your outdoor living space with expert craftsmanship. We specialize in high-quality concrete interlocking, durable custom fencing, and professional sodding services. Whether you’re looking for a stunning new driveway or a lush, green lawn, we pride ourselves on precision, durability, and finishing every project on time and on budget.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    At Main Constructions, we are passionate about construction and dedicated to transforming your dreams into tangible structures. With 15 years of experience and a commitment to excellence, we have become a trusted name in the construction industry, providing a wide range of construction services tailored to meet the unique needs of our clients. Stay updated on projects with our instagram- Mainconstructions_ Our Mission: Our mission is to be the premier construction company, delivering innovative and sustainable solutions to our clients while maintaining the highest standards of quality, safety, and professionalism. We aim to exceed expectations in every project we undertake, ensuring our clients' satisfaction and earning their trust as their construction partner of choice. Why Choose Us? Expert Team: Our team of skilled professionals brings together a wealth of expertise in various construction disciplines. From our project managers and engineers to our skilled craftsmen, everyone at Main Constructions is committed to delivering top-notch results. Customer-Centric Approach: Your vision is at the heart of everything we do. We listen to your needs, understand your goals, and work closely with you throughout the entire construction journey to ensure that your vision becomes a reality. Quality Craftsmanship: Quality is non-negotiable for us. We take pride in our meticulous attention to detail and the use of the finest materials and cutting-edge construction techniques to deliver superior results that stand the test of time. Timely Delivery: We understand the value of time in the construction industry. Our well-planned schedules and efficient project management ensure that we complete projects on time without compromising on quality. Safety First: Safety is our priority. We maintain strict safety protocols and adhere to industry standards to create a safe working environment for our team and all stakeholders involved in the project. Innovation and Sustainability: Embracing innovation and sustainable practices, we are committed to constructing eco-friendly buildings that minimize environmental impact while maximizing energy efficiency.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Hi We provide the best Concrete and Fence services in GTA . We have an experience of 8 years working in this industry. We do plain concrete, stamped concrete and exposed aggregate , with wooden fence and composite fence.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    CEILING & WALL MAKEOVERS Replace • Repair • Renew Serving the GTA & Southern Ontario for 20+ Years Need to fix up your walls or ceilings? Whether it's a small patch job or a full home makeover, we do it right the first time — with quality workmanship and real attention to detail. WHAT WE DO: - Smooth ceilings - Popcorn/stipple ceiling removal - Drywall installation, repair, framing & taping - Plaster repair, water damage repair, crack repair - Stain removal - Expert painting & finishing - Crown moulding installation - Doors, baseboards & trim - Pot light installation - Flooring & tile installation - Basement, kitchen & washroom renovations WHY US: - 20+ years of hands-on experience - Honest, upfront free estimates - Quality and satisfaction guaranteed - Homeowners across the GTA and Southern Ontario trust us for their renovations Serving Toronto, Mississauga, Brampton, Vaughan, Markham, and surrounding areas.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Owner run and operated roofing company with over 10 years experience in roofing, siding and custom flashing installation. Experience in management of local successful roofing companies. Professionalism and quality of installation above all.

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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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