Ontario’s Expert Waterproofing Specialists
Trusted Waterproofing & Concrete Solutions
Waterproofing Professionals
Established in 1990, Nusite has been serving customers for over 30 years.
Commercial Waterproofing, Concrete & Roofing Systems for Complex Building Projects
Established in 1990, Nusite Group is a commercial specialty contractor delivering large-scale waterproofing systems, concrete and structural rehabilitation, and commercial roofing solutions for institutional, industrial, and complex commercial buildings across the GTA and Southern Ontario.
Fully bonded • Licensed across Ontario • $10M liability coverage
Waterproofing
We are Ontario’s expert waterproofing specialists. Nusite Contractors Ltd. understands the complexities involved in offering commercial and industrial waterproofing solutions tailored to the unique needs of each development site or property.
Restoration
Whether it is preserving the integrity of a building through restoration or working on new construction with a failed membrane ensuring it is water tight, our expertise ensures that your site will be restored in a cost effective approach with longevity in mind.
Roofing
As one of Southern Ontario’s premier restoration and new construction roofing specialists, Nusite Contractors Ltd. understand the complexities involved in offering different roofing solutions tailored to the unique needs of each development site or property.
A Trusted Specialty Contractor for Large-Scale Commercial Construction
Nusite Group is a commercial specialty contractor structured to support complex construction environments where technical execution, coordination, and long-term performance are critical.
We partner with general contractors, project managers, property managers, and facility managers to deliver integrated building envelope, concrete, and roofing systems that perform under demanding conditions. Our work is not transactional or repair-focused — it is system-driven, technically coordinated, and aligned with long-term asset performance.
With over three decades of experience, we are frequently engaged on projects requiring specialized expertise, tight scheduling, and seamless integration within large construction teams.
Built for Coordination on Complex Projects
Nusite Group is structured to integrate into large construction and rehabilitation teams. We coordinate closely with consultants, engineers, general contractors, and ownership groups to ensure system compatibility, constructability, and performance throughout the lifecycle of the building.
Our approach emphasizes:
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System selection and compatibility
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Constructability and sequencing
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Risk mitigation and long-term durability
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Clear scopes and execution accountability
This makes Nusite Group a reliable specialty partner on technically demanding projects.
Commercial & Institutional Applications
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Parking garages and podium structures
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Elevator pits and below-grade construction
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Institutional and industrial facilities
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Existing building rehabilitation projects
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High-traffic commercial assets
All services are delivered within a commercial and institutional project context.
Featured Projects
Manufacturer Relations
Why Choose Nusite?
Certified Experience
Over 50 Million Sq Ft Waterproofed Throughout Central Ontario
Bonded & Insured
We are a fully bonded contractor and are insured for up to $10 million in liability insurance
Our Guarantee
All of our applications are backed by our material and labour warranty.
100+ Years Combined Construction Experience
Our experienced team of professionals have decades of experience with commercial construction.
Great Reputation
Nusite is an award winning waterproofing company and highly rated on HomeStars and Google.
FAQ
What types of projects does Nusite Group specialize in?
Nusite Group specializes in large-scale commercial, institutional, and industrial building projects requiring advanced waterproofing systems, concrete and structural rehabilitation, and commercial roofing solutions. We are not focused on small repair or residential work.
What kind of commercial properties do you work on?
At Nusite Group, we provide expert commercial waterproofing services in Toronto for a wide range of property types. Our experienced team works on commercial buildings, industrial facilities, high-rise properties, retail centers, historic buildings, and houses of worship. Whether it’s a modern office tower or a heritage site requiring sensitive restoration, we bring over 30 years of industry expertise to every project across the GTA and Southern Ontario.
What types of services do you offer?
Nusite Group is a full-service commercial waterproofing contractor in Toronto offering a comprehensive suite of services tailored to the needs of commercial and industrial properties. Our core services include:
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Commercial Waterproofing
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Concrete Restoration and Structural Repairs
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Commercial Roofing Solutions
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Top Coating Systems
We specialize in both preventative and corrective waterproofing methods, as well as large-scale restoration projects for aging infrastructure.
What type of commercial waterproofing do you offer?
We offer a wide range of commercial waterproofing applications in Toronto and across Southern Ontario, customized to suit each structure and site condition. Our services include:
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Open Cut Waterproofing
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Bathtub Waterproofing Systems
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Blind Side Waterproofing
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Cold Applied Waterproofing Applications
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Crystalline Waterproofing Applications
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Spray Applied Waterproofing
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Elevator Pit Waterproofing
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ICF Waterproofing
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Installation of Gas Barriers
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Sheet Applied Waterproofing
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Expansion Joint Repairs
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Traffic Coating Systems
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Crack Injection Systems
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Curtain Wall Injection Systems
Whether it’s a new build, retrofit, or remedial waterproofing, Nusite Group has the tools, technology, and expertise to get the job done right.
Do you offer warranties on your work?
Yes. All of our commercial waterproofing and restoration work is backed by comprehensive material and labour warranties to ensure long-term protection and peace of mind. Nusite Group is a fully bonded contractor and carries up to $10 million in liability insurance, reflecting our commitment to quality workmanship and risk management for commercial clients across Toronto and Southern Ontario.
How long have you been in business?
Nusite Group has proudly served the Greater Toronto Area since 1990, with over 100 years of combined waterproofing and construction management experience within our team. Our long-standing reputation is built on reliability, expertise, and results-driven solutions for complex commercial projects.
What areas do you service?
We provide commercial waterproofing and restoration services throughout the Greater Toronto Area (GTA) and extend our coverage to most of Southern Ontario. From downtown Toronto to Mississauga, Vaughan, Hamilton, and beyond, Nusite Group is your trusted partner for waterproofing and structural solutions.
Why should we choose Nusite Group?
With over three decades of experience and a reputation for handling complex and large-scale projects, Nusite Group is one of the most trusted commercial waterproofing contractors in Toronto. We are:
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Established in 1990 with over 100 years of combined team experience
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Fully bonded and insured up to $10 million
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Highly rated on Google and HomeStars
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Frequently called in for specialty restoration and waterproofing projects
Our commitment to quality, safety, and client satisfaction makes us the preferred choice for property managers, developers, and facility owners.
Do you offer residential services?
Yes, Nusite Group also has a dedicated residential division that offers:
Our residential team provides the same high-quality workmanship and technical expertise that our commercial clients trust, tailored to homeowners across Toronto and the GTA.
How is commercial waterproofing different from residential waterproofing?
Commercial waterproofing involves engineered systems designed to manage hydrostatic pressure, structural movement, and long-term durability across large building assemblies. These systems require coordination with structural, mechanical, and architectural components and differ significantly from residential applications.
When should a specialty waterproofing or concrete contractor be involved in a project?
Early involvement during design development or pre-construction allows for proper system selection, constructability review, sequencing coordination, and risk mitigation — particularly for below-grade, podium, and structural rehabilitation scopes.
Does Nusite Group work with general contractors and consultants?
Yes. Nusite Group regularly partners with general contractors, engineers, and consultants as part of integrated project teams, supporting coordinated execution on complex commercial projects.
What geographic areas does Nusite Group serve?
Nusite Group primarily serves the Greater Toronto Area and undertakes specialized or large-scale projects throughout Southern Ontario.
Are emergency services available?
Emergency concrete, structural, and roofing response is available when required; however, Nusite Group’s primary focus is planned, large-scale commercial construction and rehabilitation projects.
Discuss Your Project With a Specialty Contractor
If you are planning a commercial waterproofing, concrete rehabilitation, or roofing project and require a specialty contractor with proven experience in complex environments, we welcome the opportunity to discuss your scope.
