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Find basement waterproofing pros in Markham

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 Markham. 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 Markham

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  • Basement Waterproofing Specialist in Markham

    Strong Basements Inc. - Toronto’s trusted basement specialists since 2010. We transform wet, low and unfinished basements into safe, dry and comfortable living spaces, delivering complete solutions in basement lowering, waterproofing, walkouts, flood protection and structural concrete work. Our services include full-scope basement lowering and underpinning with engineering, permit handling, excavation, non-shrink/overpour/L-shape methods, structural upgrades with LVL or steel beams, load-bearing posts on concrete footings, main waterline relocation, full waterproofing, drainage, sump pump, sewage ejector systems, radon mitigation and new insulated concrete slabs. We perform basement waterproofing including leak diagnostics, exterior excavation, foundation repair, crack sealing, parging, membrane installation, weeping tile systems, window wells, sump pumps, backwater valves and assistance with City of Toronto rebates. Our walkout construction division manages engineering, zoning, permitting, excavation, shoring, foundation forming, drainage, waterproofing, concrete stairs, masonry, door openings and safety railings. We also provide concrete and structural services such as concrete slab replacement, floor pouring with vapour barrier and insulation, in-floor heating and foundation repairs. Flood protection options include sump pumps, backwater valves and downspout disconnection with full rebate support. We are fully licensed and insured, holding Master Plumber and Plumbing Contractor licences, Building Renovator accreditation, Ontario College of Trades qualification and IICRC Water Damage Restoration Technician certification, with a 25-year transferable warranty on waterproofing and underpinning. Serving Toronto and GTA with professional project management from engineering to final inspection - Strong Basements Inc. makes your basement safe, usable and ready for future value.

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  • Basement Waterproofing Specialist in Markham

    At Precision Concrete Worx we don't just pour concrete we build spaces families love. With 3 decades of experience, we believe collaboration is the key to great results. That is why we keep communication open, timelines clear, and your vision at the centre of every decision.

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  • Basement Waterproofing Specialist in Markham

    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 Markham

    Hello there! If you’re looking for a company that prides itself on quality work and the desire to please our clients, we’re the right fit for you. No matter how big or small the job is, commercial or residential we do it all.

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  • Basement Waterproofing Specialist in Markham

    Viewpoint Concrete & Construction Completing Residential/Commercial Projects In The Greater Toronto Area. ✔ Expert Craftsmanship ✔ Reliable Timelines ✔ Built to Last ✔ Licensed & Insured expertly engineered concrete solutions designed for durability and architectural excellence.

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  • Basement Waterproofing Specialist in Markham

    "As I meticulously cleaned the office floors, I felt a sense of satisfaction in knowing my work contributed to a healthy and productive environment."

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  • Basement Waterproofing Specialist in Markham

    Im good worker my quality is good i finish whit good clean

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  • Basement Waterproofing Specialist in Markham

    My company main purpose is exterior stucco , and parging & texture for foundation wall , interior painting , drywall,plaster and flooring

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  • Basement Waterproofing Specialist in Markham
    • Best of the Best 2025
    • Best of Awards 2026

    ⚠️ PLEASE CONTACT US DIRECTLY ⚠️ For the fastest response and best overall experience, we strongly recommend contacting Call Nelson Landscaping / CNL HARDSCAPES directly through Google, Instagram, Facebook, or our website rather than through the HomeStars request system. Many homeowners view our profile but still submit requests through the platform, which can delay communication and reduce the ability for us to properly discuss your project details from the beginning. Direct contact allows us to: • Respond faster • Better understand your project goals • Discuss realistic budgeting and scope • Determine if your project is a good fit for both sides • Provide a smoother overall consultation process We continue to maintain our HomeStars profile because of our past client reviews, project history, and long-standing reputation within the industry. We appreciate your support and look forward to helping bring your project to life

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  • Basement Waterproofing Specialist in Markham
    • Best of the Best 2025
    • Best of Awards 2026
    • Giving Back Award 2015

    Award Winning Exterior Restoration Specialists! A&A Masonry is a Toronto-based, award-winning company specializing in a comprehensive range of exterior services. Our expertise spans across stonework, interlocking pavers, natural stone, stone veneer cladding, tuckpointing, masonry, brick repair and restoration, brick cleaning, roof repair & installation, metal work, waterproofing, foundation repairs, concrete installations, epoxy flooring and more. We cater to residential, commercial and industrial clients throughout the Greater Toronto Area. Our team of skilled artisans is committed to delivering top-quality workmanship on every project. We pride ourselves on completing jobs safely, on time, and within budget. A&A Masonry stands out by consistently delivering on our promises, offering unique and reliable exterior solutions tailored to each client's needs. Customer satisfaction is our top priority, and we achieve this through exceptional attention to detail and personalized service. We never compromise on quality, safety, or efficiency, ensuring that each project, regardless of size or scope, is handled with care and expertise. We proudly serve the Greater Toronto Area, including Toronto, Etobicoke, Mississauga, Thornhill, Richmond Hill, York, North York, East York, Mimico, Hamilton, Brampton, Bolton, and surrounding regions. As specialists in exterior restorations our services include: Stonework and interlocking pavers Natural stone and stone veneer cladding Tuckpointing and brick repair Brick cleaning Chimney repair, rebuild, and restoration Roof installation and repairs Metal work Concrete steps, porches, patios, walkways and driveways Flagstone and cultured stone installation Waterproofing and foundation repair Caulking services for windows and doors Trust A&A Masonry for all your exterior needs, where excellence and customer satisfaction are always our top priorities.

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  • Basement Waterproofing Specialist in Markham

    We are ALWAYS SECURED SERVICE Renovations (AS RENOVATION) 6 years in construction industry and renovations starting off with exterior restoration to framing and drywall, my company has been registered since 2023 I specialize in drywall installation and interior painting. At my company we have a saying “we are not who you want we are the ones you need”

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  • Basement Waterproofing Specialist in Markham

    I provide a wide range of professional services and am ready to help with almost any project. I am hardworking, reliable, and committed to delivering quality results. No job is too big or too small—I’m here to help with whatever you need. Customer satisfaction is always my priority.

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  • Basement Waterproofing Specialist in Markham

    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 Markham

    Cooper Civil Contracting is a Greater Toronto Area–based company specializing in concrete and excavation services for residential, commercial, and industrial projects. The company provides reliable site preparation, foundation work, and concrete solutions with a strong focus on quality, efficiency, and safety. With over 20 years of management experience in the heavy civil construction sector, Cooper Civil Contracting brings proven expertise to every project. The team has extensive experience in road construction, commercial building foundations, and large-scale concrete floor installations, ensuring work is completed with precision and in accordance with project specifications. Cooper Civil Contracting is committed to professionalism, clear communication, and dependable performance. The company works closely with clients, builders, and contractors to deliver high-quality results on time and within budget, building long-term relationships across the construction industry.

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  • Basement Waterproofing Specialist in Markham

    I’m a commercial steel building contractor looking to do some smaller side jobs. Willing to do about anything.can do steel,wood,Reno’s concrete. Skid steer or excavator work etc…

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  • Basement Waterproofing Specialist in Markham

    PROMEXCONSTRUCTION INC is a professional construction and renovation company serving Toronto and the GTA, backed by a team with extensive hands-on experience in the construction industry. We specialize in residential and commercial renovations, new construction, demolition, wood and metal framing, insulation, drywall, taping, ceilings, painting, flooring, carpentry, concrete work, and general construction. Our team is supported by experienced project leadership with architectural training, allowing us to understand drawings, specifications, construction details, and coordinate different trades throughout every stage of a project. We are committed to quality workmanship, clear communication, organized job sites, attention to detail, and building long-term relationships with our clients. From smaller renovations to larger construction projects, we approach every job with professionalism, reliability, and a strong commitment to delivering quality results. PROMEXCONSTRUCTION INC — Built Right, Built On Time.

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4.7

Top rated Basement Waterproofing Specialists

Our Basement Waterproofing Specialists in Markham, are rated 4.7 out of 5 based on 44 reviews from homeowners like you.

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What basement waterproofing services are available in Markham?

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 Markham:

  • 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, 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 Markham?

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 Markham:

  • 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 Markham, 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 Markham with HomeStars

Finding a basement waterproofing pro in Markham 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 Markham.
  3. Connect with basement waterproofing specialists in Markham 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 Markham

How long does basement waterproofing last in Markham?

Most professional waterproofing solutions in Markham 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 Markham requires excavation?

Exterior waterproofing projects in Markham 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 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 Markham?

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 Markham.

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