About Nusite Group

Trusted Commercial Waterproofing & Restoration Experts in Toronto Since 1990

Established in 1990, Nusite Contractors Ltd. has proudly served Toronto and the Greater Toronto Area (GTA) for over three decades. With more than 100 years of combined experience in construction and waterproofing management, we have become one of the leading names in commercial waterproofing, concrete repair, structural restoration, and roofing services in Southern Ontario.

We are a fully bonded and insured contractor, carrying up to $10 million in liability insurance, and are trusted by property managers, developers, engineers, and building owners across a wide range of sectors.


Comprehensive Commercial Waterproofing Solutions

Nusite Group specializes in a wide array of commercial waterproofing services for all types of buildings and structures. Whether it’s a new construction, retrofit, or restoration project, we provide tailored solutions using industry-leading techniques, including:

  • Open Cut Waterproofing

  • Bathtub Waterproofing Systems

  • Blind Side Waterproofing

  • Cold Applied Waterproofing

  • Crystalline Applications

  • Spray Applied Waterproofing

  • Elevator Pit Waterproofing

  • ICF Waterproofing

  • Installation of Gas Barriers

  • Sheet Applied Waterproofing

  • Expansion Joint Repairs

  • Traffic Coating Systems

  • Crack Injection Systems & Curtain Wall Injection Systems

All our waterproofing systems are backed by comprehensive material and labour warranties, ensuring long-lasting performance and peace of mind.


Serving All Types of Commercial Properties

We work with a wide range of commercial and institutional properties throughout the GTA and most of Southern Ontario, including:

  • Commercial and industrial buildings

  • High-rise residential and mixed-use properties

  • Retail centres and plazas

  • Historical buildings and heritage sites

  • Churches and houses of worship

Our team is often called in as specialists for complex or large-scale waterproofing and structural restoration projects that require experience, precision, and accountability.


Certified & Trusted by Top Manufacturers

We are certified applicators of products from leading manufacturers such as NaturaSeal, Tremco, Henry, Soprema, Carlisle, W.R. Meadows, GCP, and more. To date, we have successfully completed over 50 million square feet of waterproofing applications across Ontario—each one executed with precision and backed by warranty.


In-House Concrete Division & Structural Repairs

Our dedicated concrete division handles everything from engineered structural repairs to forming, pads, posts, and complex builds such as loading docks. Whether it’s concrete slab restoration, foundation work, or structural strengthening, Nusite provides expert execution on every job.


Highly Skilled Team & Advanced Inspection Tools

Our experienced sales and field team is well-versed in residential, commercial, and ICI (Industrial, Commercial, and Institutional) properties. Every project begins with a thorough inspection using moisture meters, FLIR infrared cameras, and laser measuring tools to accurately diagnose water intrusion, structural concerns, and moisture damage—ensuring we offer the right solution the first time.


At Nusite Group, our goal is simple: deliver trusted, long-lasting waterproofing and structural solutions with integrity, safety, and quality at the forefront. If you’re looking for a highly rated, experienced, and insured waterproofing contractor in Toronto, contact us today.