Commercial High-Rise & Mid-Rise Waterproofing Experts
For over 35 years, Nusite Group has delivered high rise waterproofing solutions for complex commercial and institutional buildings across Toronto and southern Ontario. Our teams specialize in complex projects spanning new construction, repair, and ongoing maintenance — providing the technical depth and system knowledge required to protect high-rise and mid-rise assets throughout their lifecycle.
As trusted high rise waterproofing contractors, we integrate directly into general contractor teams, project management structures, and property portfolios, delivering waterproofing systems engineered for long-term performance rather than short-term fixes.
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Complete Waterproofing & Building Envelope Solutions
Every high-rise and mid-rise structure relies on a coordinated waterproofing system to protect its building envelope over decades of service. Nusite Group brings Division 7 expertise across the full envelope — from below-grade structure to roof — applying waterproofing solutions matched to the performance demands of condominium towers, residential towers, and institutional buildings throughout Toronto and the surrounding region.
Our scope covers every envelope condition a large-scale structure presents:
- Roofs and terraces
- Basements and foundations
- Facades and exterior walls
- Podium decks
- Exposed high-traffic decks
Each system is selected and detailed to work as part of the building’s complete waterproofing strategy — not as an isolated repair.
Roofs and Terraces
Roof and terrace assemblies on high-rise and mid-rise buildings must manage water infiltration under sustained exposure, traffic, and complex detailing at penetrations, drains, and transitions. Nusite Group applies the following systems based on structure type, traffic load, and exposure conditions:
- Bituminous Membranes — multi-ply, torch- or self-adhered systems suited to low-slope commercial roof assemblies requiring proven, long-service waterproofing.
- Polyurethane Liquid Membranes — fully adhered, seamless systems for terraces, balconies, and roof areas with complex geometry or heavy detailing.
- Thermoplastic (TPO/PVC) & EPDM Membranes — single-ply systems providing durable, weldable waterproofing for large-format commercial and institutional roof areas.
Basements and Foundations
Below-grade structure requires waterproofing systems capable of resisting sustained hydrostatic pressure and soil moisture over the life of the building. Depending on site conditions and structural design, Nusite Group specifies:
- Crystalline Waterproofing — integral, reactive systems that densify concrete and seal hairline cracks from within the structure.
- Rubberized Asphalt — self-adhered, high-performance membranes for foundation walls and below-grade slabs.
- HDPE Membranes — durable, puncture-resistant sheet membranes suited to blindside and protected below-grade applications.
Facades and Exterior Walls
Facade waterproofing protects the building envelope at cladding transitions, joints, and exposed masonry or concrete surfaces. Nusite Group applies:
- Elastomeric Coatings — flexible, breathable coatings that bridge minor substrate movement while maintaining a weather-resistant exterior.
- Silane/Siloxane Sealants — penetrating water repellents that protect concrete and masonry surfaces without altering the building’s exterior appearance.
Podium Decks (Plazas, Green Roofs, Courtyards)
Podium decks sit above occupied or parking space and must perform under planting loads, foot traffic, and long-term exposure — with no tolerance for leaks into the structure below. Nusite Group’s podium deck waterproofing systems include:
- Cold-Applied Polyurethane Liquids — seamless, fully bonded membranes suited to complex plaza and courtyard geometries.
- Hot-Applied Rubberized Asphalt — heavy-duty membranes engineered for podium decks supporting green roofs, planters, and pedestrian areas.
Exposed High-Traffic Decks (Parking Garages, Helipads, Driveways)
Exposed decks subject to vehicle and heavy foot traffic require systems that combine waterproofing performance with abrasion and impact resistance. Nusite Group applies traffic-rated systems including:
- Multi-Coat Polyurethane Traffic Systems — layered systems providing waterproofing and durable wear resistance for parking structures and driveways.
- Polyurea Coatings — rapid-cure, high-strength systems suited to fast-turnaround projects and heavy-traffic areas.
- PMMA (Polymethyl Methacrylate) — fast-curing traffic toppings offering strong chemical and wear resistance for demanding commercial applications.
