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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

    At Horizon Services, we are dedicated to transforming ideas into reality through our comprehensive range of services. With a focus on quality, technology and innovation we specialize in property services. Our team of experienced professionals is committed to delivering tailored solutions that meet the unique needs of our clients. We pride ourselves on our collaborative approach, working closely with business to understand their goals and challenges. Our quality and do it right on each job. I the realm of property services we leverage strategies from the beginning of each job to enhance good performance and the best execution and also working head by jeans with the client to reach their expectations. At Horizon Services we believe in fostering long-term partnerships with our clients, empowering them to achieve sustainable growth and success in an ever involving property project. Let us help you to reach and create your ideas with confidence.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    RichScapes offers the following services • Interlock (Driveway & Walkway) • Sod ( grass removal, new grass) • Tree cutting/trimming (small trees only) • Plants and weed removal • Crushed stones • Flower beds ( soil or mulch) • Pressure wash driveway or backyards • landscape design • retaining garden walls • weekly or bi weekly grass cutting. +5 Years Experience Get your home done by PROFESSIONAL and EXPERIENCED workers at and AFFORDABLE rate!! We can cater to ALL the needs for your household. We offer our services anywhere in the GTA ( MISSISSAUGA, BRAMPTON, TORONTO, OAKVILLE, VAUGHN).

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

    DrainCom, your local Basement Waterproofing and Drain Repair Experts, is your "one stop shop" for basement waterproofing, foundation crack repair, drain and sewer repair, basement flood prevention, Sump Pump and Backwater Valve Installation needs. We offer Free no obligation Estimate and assistance with Toronto Mississauga, Halton Hills rebates.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    My name is richard Tejeda I’m working in the construction business since 2004 I’m always on time And I take my work really serious I have a lot of experience in concrete work Demolition, landscaping, interlock, excavation, driveway, etc. So if you’re looking for someone to do your work the right way that would be me

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    MR WATERPROOFING has been operating in GTA for over a decade now with 10+ years of industry exp, Leading Provider Of Waterproofing Solutions For Commercial & Residential Buildings

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    We are a GTA-based concrete, excavation and hardscape company focused on quality workmanship and dependable service. With hands-on construction experience, we take pride in completing every project properly, safely and with attention to detail. We specialize in concrete pads, walkways, patios, steps, curbs, excavation, grading, removals, interlock and other residential hardscape projects. Whether it’s a small repair or a complete outdoor project, we work closely with our customers to provide honest recommendations, fair pricing and a clean, professional finished product. No job is too small. We show up when we say we will, respect your property and treat every project like it’s our own. Contact us for a free estimate and let’s discuss your project.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Quality work at a reasonable price, guaranteeing customer trust and satisfaction

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Hello my name is Diego, I've been general contracting for some years now and have started a new company to get new leads. I do handyman work and full renovations, I know people in all fields of work and will do quality work. I have no problem talking with people about pricing as everyone has a different set of circumstances and finances.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    In the dynamic Canadian residential market, home renovations not only represent an aesthetic improvement, but a strategic investment in comfort, energy efficiency and asset appreciation. We offer comprehensive renovation services designed specifically for owners in Canada, understanding the climatic requirements, building code standards and quality expectations that characterize the Canadian market. Our approach combines technical precision, regulatory compliance and meticulous execution at every stage of the project, from initial planning to final delivery. Living room renovations are one of the most requested transformations in Canadian homes. The living room is the social core of the home, and its design must balance functionality, natural lighting and thermal efficiency. We carry out complete remodeling that includes selective demolition, redistribution of spaces, installation of new electrical systems according to the code, replacement of floors by engineered wood, high-strength vinyl or porcelain, as well as drywall finishes with level 4 or 5 as required. We also modernize fireplaces, install recessed LED lighting systems and optimize thermal insulation to ensure comfort during the harsh winters characteristic of many pro.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Transforming Your House into a Dream Home At Nora Arta, we blend artistry with expertise to breathe new life into your space, creating an environment that is not only beautiful but also perfectly tailored to your lifestyle. Experience & Specialized Services With over 10 years of experience, our dedicated team has successfully completed hundreds of projects, from minor upgrades to full-scale home transformations. We have a proven track record of delivering quality craftsmanship. We specialize in: Full-scale Home Renovations Modern Kitchen & Bathroom Remodeling Professional Basement Finishing Design & Material Consultation Why Choose Nora Arta? We understand that a home renovation is a big investment. We approach every project with meticulous attention, ensuring a stress-free and enjoyable experience for you. For builders and contractors, we serve as a reliable partner, dedicated to delivering high-quality craftsmanship on schedule and within budget. Service Area Our service area covers the entire Greater Toronto Area (GTA), including: Richmond Hill, Markham, Vaughan, Mississauga, Brampton, and Oakville. For a free consultation and to see our portfolio of past projects, contact us today. We look forward to partner

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    we specialize in providing reliable, affordable, and energy-efficient heating, ventilation, and air conditioning solutions for homeowners and businesses. With a commitment to quality workmanship and excellent customer service, we make sure your indoor comfort is never compromised. Whether you need installation, repair, or maintenance, our skilled technicians bring years of experience and the latest industry knowledge to every job. We take pride in offering personalized solutions that fit your needs and budget, while ensuring long-lasting performance and peace of mind

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Interlock,Concrete,Landscape Renovations and New build We don’t just pave; we engineer landmarks. From high-traffic estate driveways to intricate natural stone retreats, our interlock work is defined by structural perfection and a refined aesthetic that commands attention.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    3M Flooring is a North York based HVAC contractor, Flooring Contractor, Carpenter, Tiler, Stairmaker, Renewable Energy Specialist, Cabinet maker, Interior decorator, Interior designer, Upholsterer, Electrician, Plumber, Refrigeration specialist, General contractor, Mason & Metal worker company. Our goal is to provide quality service and excellent workmanship to our customers. If you need help with install or replace wooden floor or parquet, install laminate floor, install vinyl, linoleum or pvc floor, install or replace carpet, install or replace floor heating, install or renovate stairs & repair or maintain stairs, message us so we can assist you and arrange a quote.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Vela Construction offers high quality construction services such as deep cleaning tasks, demolition, door and hardware installation, caulking, insulation, and painting. If you need help with a few repairs or projects at home, let us help you in achieving the best results!

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Our Core ServicesBrick & Stone Installation: Custom stonework, brick veneers, and architectural block installation.Masonry Repair & Restoration: Expert tuckpointing, mortar matching, and structural crack repairs.Outdoor Living Spaces: Patios, outdoor kitchens, fire pits, and natural stone walkways.Chimney & Foundation Repair: Safe and reliable rebuilding and waterproofing solutions.

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  • Basement Waterproofing Specialist in Thornhill, Ontario

    Top Notch Services provides an extensive range of renovation solutions for both residential and commercial settings, ensuring that no job is too small or too big for our team of experts. With over 15 years of experience, we pride ourselves on delivering high-quality craftsmanship and exceptional customer service. Our skilled professionals are committed to treating every project with the utmost care and attention to detail, just as if it were our own home. Whether you're looking to transform a single room or undertake a large-scale renovation, Top Notch Services is dedicated to bringing your vision to life with efficiency and excellence. Please contact of a quote.

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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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