Some of our top rated basement waterproofing specialists in Unionville
Sort by:
- Get in touch
Best of the Best 2025
Best of Awards 2026
About Canada Waterproofers Welcome to Canada Waterproofers, an owner-operated waterproofing, plumbing, drainage and foundation water management company serving homeowners across Southern Ontario since 1998. For more than 27 years, our approach has remained simple: identify the real source of the problem, explain it clearly, recommend only the work that is actually necessary, complete it properly and stand behind the result. Canada Waterproofers has helped protect more than 15,000 homes and operates with a team of 20+ experienced technicians across basement waterproofing, foundation repair, plumbing, sewer and drain services, sump pumps, backwater valves, underpinning and flood prevention. We understand that water problems are rarely as simple as they first appear. A wet basement might be caused by a foundation crack, hydrostatic pressure, damaged weeping tile, poor grading, a failed sump pump, sewer backup, drainage problem or plumbing issue. That is why we focus on diagnosing the source first rather than automatically recommending the largest or most expensive repair. Our goal is not simply to sell a waterproofing or plumbing service. Our goal is to understand why the problem is happening and provide the most practical long-term solution for the home. Owner-Operated With Hands-On Expertise Canada Waterproofers is owned and operated by Carl McDowell and Slava Koval, who remain actively involved in the company, assessments, projects and quality control. Our leadership brings professional expertise across waterproofing, plumbing, drainage, foundation repair, building renovation, water damage restoration and underpinning. Carl McDowell is an Owner, Senior Waterproofing Consultant and Master Plumber with 28 years of experience listed on his professional profile. His credentials include: - Master Plumber - Ontario licensed plumber, licence #13947296 - IICRC Water Damage Restoration Technician - Building Renovation Licence - Drain Layer Licence - Preferred Contractor for Halton Region Slava Koval is an Owner and Master Plumber whose qualifications include: - Master Plumber - Licensed waterproofer - Licensed building renovator - Certified water damage restoration technician - Hands-on involvement in installations and quality control This combination of plumbing, waterproofing and drainage knowledge allows our team to evaluate the entire water management system rather than looking at one isolated symptom. We Solve the Source, Not Just the Symptom One of the most important principles at Canada Waterproofers is our root-cause-first approach. Before recommending major work, we look at why water is entering or why a plumbing or drainage system is failing. For example, water at the basement wall and floor joint may involve groundwater or foundation drainage. A recurring sewer blockage may require a camera inspection rather than repeated drain snaking. A sump pump that runs constantly may be responding to another drainage problem. A foundation crack may need a targeted repair rather than a full excavation. Correct diagnosis can prevent unnecessary work and potentially save homeowners thousands of dollars. If a smaller repair can properly solve the problem, that is the solution we want our customer to understand. ##Complete Waterproofing, Plumbing and Drainage Services Canada Waterproofers provides a wide range of residential services under one experienced team, including: - Interior basement waterproofing - Exterior basement waterproofing - Basement leak repair - Foundation crack repair - Foundation drainage systems - Weeping tile installation and repair - French drain installation - Sump pump installation and replacement - Battery backup sump pump systems - Backwater valve installation - Drain cleaning and unclogging - Drain snaking - Hydro jetting - Sewer camera inspections - Sewer backup service - Sewer and drain repair - Sewer line replacement - Plumbing services - Basement underpinning - Basement lowering - Flood prevention solutions - Emergency waterproofing services - Emergency plumbing and drainage services Our ability to work across waterproofing, plumbing, sewer systems and drainage is especially valuable on complicated water problems because these systems often interact with one another. Instead of requiring homeowners to coordinate several different contractors, Canada Waterproofers can assess the broader water management problem and determine which system actually requires attention. Professional Drain and Sewer Diagnostics For recurring drain and sewer problems, guessing can become expensive. Canada Waterproofers uses modern diagnostic and service equipment including sewer camera inspections, professional drain-clearing equipment and hydro jetting where appropriate. Camera inspections can help identify problems such as: - Root intrusion - Recurring blockages - Damaged sewer pipe - Pipe deterioration - Misaligned sections - Poor drainage conditions - Obstructions inside the line The objective is to understand what is happening inside the system before recommending a major repair whenever practical. #24/7 Emergency Service Water and drainage emergencies do not always happen during regular business hours. Canada Waterproofers provides 24/7 emergency waterproofing and plumbing-related service for urgent situations involving water entry, drainage problems, sewer backups, sump pump failures and related emergencies. When water is actively entering a home or a sewer system is backing up, fast professional assessment can help limit further damage and determine the appropriate next step. ##Free On-Site Assessments and Written Estimates Canada Waterproofers offers free on-site assessments and free estimates with no obligation for qualifying services. Before work begins, our goal is to clearly explain: - What we believe is causing the problem - What repair we recommend - Why that repair is appropriate - What the project will involve - What the expected cost will be We believe homeowners should understand what they are paying for before committing to a project. ##Lifetime Transferable Warranty Qualifying Canada Waterproofers waterproofing systems are backed by a lifetime transferable warranty, subject to the applicable written warranty terms and exclusions. For homeowners, a transferable warranty provides additional long-term confidence because qualifying warranty protection can remain associated with the waterproofing system even if ownership of the home changes. We believe a waterproofing company should not disappear after the installation is complete. Long-term accountability matters. Price Match Guarantee Canada Waterproofers also offers a Price Match Guarantee for comparable work quoted by a fully licensed, WSIB-registered and insured contractor, subject to applicable terms. Price should always be considered alongside the proposed scope, materials, contractor qualifications, insurance, warranty and installation method. Our objective is to provide competitive pricing without sacrificing the quality of the repair. Licensed, Insured and WSIB-Covered Canada Waterproofers is fully licensed, insured and WSIB-covered. Our current company information includes $5 million in liability insurance coverage, helping provide additional protection and confidence for homeowners undertaking waterproofing, plumbing, drainage and foundation work. Professional licensing, insurance and WSIB coverage are especially important when work involves excavation, plumbing systems, structural components, foundation drainage or other significant parts of a home. ##Experienced In-House Crews For qualifying waterproofing services where applicable, Canada Waterproofers uses experienced in-house crews rather than subcontracting the installation. This gives us greater control over workmanship, training, project standards and accountability. Our owners and experienced team remain involved in ensuring projects are completed according to the required scope and quality standards. BBB Accredited With an A+ Rating Canada Waterproofers is a BBB Accredited Business with an A+ rating. We have built our reputation through decades of work across waterproofing, plumbing, drainage, foundation repair and flood prevention, supported by a strong third-party review presence across HomeStars, Google, TrustedPros and other platforms. Customer reviews remain one of the most important measures of our work because they reflect the experiences of homeowners after the project has actually been completed. ##Multi-Year Award-Winning Company Canada Waterproofers has received 20+ industry awards and recognitions over the years. Our HomeStars recognition includes awards documented across multiple years, including recognition in 2017 and from 2019 through 2026. Recent HomeStars recognition includes: - HomeStars Best of the Best 2025 - HomeStars Best of Awards 2026 Canada Waterproofers was also recognized with: - Best of TrustedPros 2020 Our recognition is meaningful to us because it reflects years of consistent service rather than a single project or short period in business. Recognized Industry Expertise Our expertise has also been recognized beyond customer reviews and awards. In 2026, HomeStars consulted Carl McDowell of Canada Waterproofers as an expert for its basement waterproofing guide, providing another independent signal of the professional knowledge behind our company. Carl is also presented as a Preferred Contractor for Halton Region, supporting our long-standing experience serving homeowners throughout Oakville, Burlington, Milton and the surrounding Halton communities. ##Permit and Rebate Assistance Certain flood prevention projects, including qualifying sump pump and backwater valve installations, may involve municipal permits or rebate programs. Where applicable, Canada Waterproofers can help homeowners understand relevant permit and rebate requirements and assist with documentation related to qualifying projects. Municipal programs change over time, so eligibility should always be confirmed before work begins. ##Service Areas Across Southern Ontario Canada Waterproofers provides waterproofing, plumbing, drainage and foundation services throughout Southern Ontario. Our verified public office locations include: - Toronto - Mississauga - Oakville We also serve homeowners throughout communities including: - Brampton - Burlington - Milton - Hamilton - Vaughan - Richmond Hill - Markham - Scarborough - Etobicoke - North York - Ajax - Pickering - Whitby - Oshawa - St. Catharines - Niagara Falls - Niagara Region - Kitchener - Waterloo - Cambridge - Guelph - Brantford - London - Barrie - Peel Region - Halton Region - York Region - Durham Region - Hamilton Region - Niagara Region - And surrounding Southern Ontario communities ##Old-School Values With Modern Technology Our company combines modern waterproofing, plumbing and diagnostic technology with values that have guided us since 1998. We believe in: - Honest recommendations - Clear communication - Transparent pricing - Proper diagnosis - Professional workmanship - Respect for the customer's property - Attention to detail - Long-term solutions - Accountability after the job is complete We do not believe homeowners should be pressured into unnecessary repairs. Our responsibility is to explain what we find, provide practical options and help the homeowner make an informed decision. ##Our Commitment to Every Homeowner Every home is different, and every water problem deserves to be properly investigated. Whether we are dealing with a small foundation crack, a clogged drain, a failed sump pump, a sewer backup, a backwater valve, deteriorated weeping tile, an exterior waterproofing project or a complete basement drainage system, the principle remains the same. Find the source first. Repair what is necessary. Use the right method and materials. Complete the work properly. Keep the homeowner informed. Stand behind the result. With more than 27 years of experience, 15,000+ homes protected, 20+ expert technicians, licensed Master Plumber leadership, professional water damage restoration expertise, $5 million liability insurance, WSIB coverage, lifetime transferable warranties on qualifying waterproofing systems, 24/7 emergency service, a Price Match Guarantee, multi-year industry recognition and hands-on owner involvement, Canada Waterproofers continues to provide homeowners across Southern Ontario with experienced, accountable water management solutions. Canada Waterproofers. Find the source. Fix what is necessary. Do it properly. Stand behind it.
- Get in touch
- Best of the Best 2025
- Best of Awards 2026
Welcome to Advanced Plumbing and Drains, a trusted name in Toronto's residential plumbing services for over 20 years. We are proud to be a local, family owned and operated company, dedicated to delivering exceptional service with integrity and care. At Advanced Plumbing and Drains, we believe in doing things the right way. Our friendly, honest approach ensures that every interaction with us is stress-free and transparent. With upfront pricing and no hidden costs, you can trust us to handle your plumbing needs with complete clarity and fairness. Specializing in plumbing and drain services, we are equipped to tackle everything from routine repairs to complex issues with efficiency and expertise. Your home is your sanctuary, and we treat it with the respect it deserves by maintaining cleanliness and professionalism in every job we undertake. Experience the difference with Advanced Plumbing and Drains—where quality work meets customer-first service. Let us take care of your plumbing needs so you can enjoy the comfort and peace of mind you deserve.
- Get in touch
At Top 2 Bottom Contracting, we are a reliable detail driven company committed to quality workmanship and honest service. We take pride in completing projects on time, on budget, and to the highest standards. From start to finish, we communicate clearly, treat your home with respect, and stand behind our work. Our goal is simple; deliver results you can trust and craftsmanship you'll be happy with for years to come.
- Get in touch
We are an innovative company with professional and trained people Ready to help you! Guaranteed job!
- Get in touch
Welcome to Masters Concrete – Strong Foundations, Solid Results At Masters Concrete, we’re a trusted general contractor with over 10 years of experience specializing in concrete and structural work for both residential and commercial projects across the GTA. We focus on footings, concrete walls, slabs, foundations, underpinning, extensions, additions, separate entrances, and garden suites. Whether you're building new, renovating, or upgrading, we bring expert knowledge and quality workmanship to every job. What We Offer: • Concrete Footings, Walls & Slabs • Foundation & Underpinning Work • Home Additions & Extensions • Basement Lowering & Separate Entrances • Garden Suites & Secondary Units • Residential & Commercial Projects We own and operate our own equipment and work with a team of skilled trades and laborers to ensure efficient, professional results—on time and on budget. Why Choose Us? • 10+ years of hands-on experience • Fully licensed and insured • Reliable, honest, and detail-focused • Clean, safe, and professional job sites • Clear communication from start to finish If you need a dependable contractor who specializes in strong structures and clean finishes, look no further than Masters Concrete.
- Get in touch
Toronto Waterproofing INC is the top company in the GTA and surrounding areas for providing basement waterproofing, foundation repair, underpinning, sump pump and back flow water well installation and many other services to the highest standards. Put a stop to the perils of water damage in your home and keep it dry 24/7 like it should be. Our professionals have the experience and expertise when it comes to customer satisfaction and keeping water away from your home. *We also offer commercial services for Waterproofing, Paving, Asphalt repair, and sodding installation.* We offer a 50 year warranty on Basement Waterproofing* Contact us today to book your free estimate so we can get started sooner rather than later! *Conditions apply
- Get in touch
- Best of Awards 2026
Best of Newly Listed 2025
Welcome to Sehrii Builds Family Company! We are a family-owned construction business with over 20 years of experience, originally from Ukraine and proudly serving Toronto and the GTA. Our team delivers high-quality workmanship, expert advice, and attention to every detail, ensuring your project is done safely, efficiently, and beautifully. At Sehrii Builds, we understand that your home is an investment. That’s why we treat every project with care, striving to create results you’ll enjoy and be proud of for years to come. Our Services Include: Exterior: • Fences & Gates • Decks & Stairs • Gazebos • Landscape Design • Interlocking Stone Work & Stone Slabs • Porch Restoration & Repair • Retaining Walls • Windows & Doors Installation • Siding Interior: • Kitchen Renovations • Bathroom Renovations • Basement Renovations • Flooring • Painting & Drywall • Handyman Services ✅ Choose Sehrii Builds Family Company for trusted, professional construction services that transform your home and add lasting value. 📞 Contact us today to discuss your project!
- Get in touch
🛠️ Extensive experience in home renovations and various construction projects ✅ Enhancing interior spaces with creative ideas 💯 Delivering professional workmanship with outstanding results 💰 Fair pricing for top-quality work 🏆 Client satisfaction = Business growth and success
- Get in touch
Drain & Plumbing Services in Toronto and Waterloo Region. We will beat any quote by up to 50%. 24/7 emergency service for no extra cost. Life Time Warranty.
- Get in touch
- Best of Awards 2026
Welcome to Design & Stone Hardscape, a leading hardscape company dedicated to transforming outdoor spaces into stunning, modern, functional environments. Based in Toronto/GTA, we specialize in interlock, concrete, excavating, landscape and water proofing. At Design & Stone Hardscape, our mission is to blend creativity, craftsmanship, and customer satisfaction in every Hardscape project. We believe in delivering durable and aesthetically pleasing outdoor solutions that stand the test of time. With a team of skilled professionals, we excel in a variety of hardscaping services, including patio installations, retaining walls, paver driveways, and outdoor living spaces. Our expertise lies in interlocking and we are equipped to handle projects of any scale. Quality is at the core of everything we do. From meticulous planning to the use of premium materials, we ensure that every hardscaping project meets the highest standards of craftsmanship. Our goal is to exceed your expectations and create outdoor spaces of your dreams. Our clients' satisfaction is our greatest achievement. Don't just take our word for it—read what our clients have to say about their experience with Design & Stone Hardscape. We take pride in turning their hardscape visions into reality. Give us a call - (437) 971-5966
- Get in touch
ABOUT US WE MAKE COMFORT IN YOUR HOME At Ultra Interiors INC, our mission is to transform your living spaces into a bastion of comfort without sacrificing elegance or style. Our team is dedicated to understanding your personal aesthetic and functional needs, creating an environment that is both luxurious and comfortable. From the moment you step into your newly designed space, we want you to feel at home, enveloped in the tranquility and bespoke beauty of our work. WHY US ? INDIVIDUAL APPROACH Your home should tell your story. That’s why at Ultra Interiors INC, we take a client-centered approach, tailoring each design to your unique story, preferences, and the way you move through life. QUALITY OF WORK Our reputation is built on the foundations of quality and attention to detail. We use only the finest materials and the most skilled artisans to ensure that every project is completed to the highest standard. AUTONOMY We respect our clients’ vision and offer them the autonomy to be as involved as they wish in the design process. At Ultra Interiors INC, your voice is paramount, and your satisfaction is our ultimate goal. OUR SKILL Interior Design: We craft interiors that are not only visually stunning but also practical, ensuring they enhance your lifestyle. Materials: Every material we select is chosen for its quality, sustainability, and ability to bring our designs to life. User Experience: We place your experience at the heart of our design process, creating spaces that are intuitive, accessible, and joyous to live in.
- Get in touch
Following my passions to build, create, restore. To serve. I do my own work! Save money by removing the middleman and get a top 1% Mason/Restoration Specialist for less!
- Get in touch
- Best of Awards 2026
- Best of Newly Listed 2024
WHY CHOOSE US? Lifetime Warranty As a reputable Toronto waterproofing/concrete/drain/landscape contractor, our team is highly dedicated and fully licensed, and insured. We prioritize utilizing top-quality materials and industry-leading standards to deliver exceptional results on every project. Our focus on providing the best value in the Greater Toronto Area sets us apart. From working closely with architects and designers to achieve beautiful, functional structures to expertly managing each project, we're here to bring our extensive construction experience to your next project! Free and Fast Estimate At Stellar Work, we understand that making the decision to waterproof your property or undertake any renovation can be a significant step. That's why we're here to guide you through the process. We offer a no-obligation consultation where one of our expert specialists will explain the process in detail and answer any questions you may have. We provide you with a fast and free estimate for our services, which range from basement waterproofing to foundation repair, concrete works, landscaping, drain and more. We are committed to providing competitive pricing so that you can have peace of mind about your renovation investment. It's your first step towards a more secure property. Client-Oriented Provider At our company, we pride ourselves on providing a comprehensive client experience from start to finish. This includes effective communication, accurate budgeting, appropriate staffing, efficient on-site organization, and consistent high-quality workmanship. Our waterproofing, concrete, drain and landscape experts in Toronto are dedicated to ensuring every project is completed to the client's satisfaction and exceed their expectations. With our end-to-end service, you can trust us to handle every aspect of your project with the utmost care and professionalism.
- Get in touch
We are a company that has all the experience and work done entirely by Mexican hands, we have services in concrete, partition walls, fireplaces, steps, parging and more.
- Get in touch
- Best of the Best 2025
- Best of Awards 2026
DrainWorks Plumbing is a customer-first, Toronto-based plumbing company providing full plumbing services, drain cleaning, drain repair and drain replacement. All our plumbers are 100% licensed, insured and commission-free! We take great pride in being one of the most reviewed companies on HomeStars in North America! We are also proud to say that we have been chosen (twice) as the "best plumber in the city" by Toronto Life magazine, as evidenced by their "Busy person's survival guide" issue. High praise from a wonderful and trusted publication! We employ full-time salaried plumbers rather than commission-based plumbers that are motivated to up-sell you. All of the DrainWorks plumbers in Toronto and surrounding areas are fully licensed, insured, and professionally trained. We are also proud to say that 100% of our employees have been with us for 10 years or more. Finally, an experienced local plumber near you that you can trust and rely on! Further, we've had the honor of being one of a select few companies across all trades, hand picked by Gemini award winning TV host and contractor, Bryan Baeumler, of HGTV's Leave it to Bryan and Disaster DIY to be Baeumler Approved. A high mark of quality, indeed. You can count on DrainWorks for all your plumbing and drain-related needs in Toronto. Our plumbers are ready for your call with clear and upfront pricing and will always arrive on-time and fully prepared with everything they can foreseeably need. DrainWorks Plumbing also likes to help and support our local Toronto community and charities, such as for the Easter Seals and SickKids Foundation. Please take a few moments to read these plumbing reviews from our customers, so you too can learn about and take advantage of the ‘DrainWorks Difference’. We hope you choose us for your next call to the plumber!
- Get in touch
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.
