Green Roof Systems for Vancouver BC, Calgary AB & Western Canada

Green Roof Systems for Vancouver BC, Calgary AB & Western Canada

Green Roof Systems by Columbia Green Technologies for Vancouver BC, Calgary AB & Western Canada

Benefits of a Green Roof:

  • Reduce the amount of stormwater runoff and also delay the time at which runoff occurs
  • In summer, depending on the plants and depth of growing medium, green roofs retain up to 70% of the precipitation that falls on them; in winter they retain between 25-40%
  • Green roofs can sustain a variety of plants and invertebrates, and provide a habitat for various bird species
  • 2x-3x Prolonged life of roof membrane
  • Provide year-round energy savings; green roofs act as a thermal blanket saving energy and costs for both heating and cooling – as many as fourteen Leadership in Energy & Environmental Design (LEED) credits
  • Aesthetics; Attractive amenity spaces and increased property values and occupancy rates

Green Roof Systems from Columbia Green Technologies 

Columbia Green Technologies provides the most flexible designs for your green roof project, rather than a one-size-fits-all approach. They offer Layered, Planted-In-Place and Pre-Grown Tray green roof systems. Columbia Green Technologies' innovative green roof solutions are engineered to maximize stormwater retention and create an environment for optimal plant health.

What is a Green Roof?

A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and growing medium, planted over a waterproof membrane. It may also include additional layers such as a root barrier, drainage and irrigation system. Container gardens on roofs, with plants in pots or planters, are not generally considered to be true green roofs, although this is debated. Rooftop ponds are also considered green roofs, often used to treat a buildings greywater.

Green roofs are truly multi-purpose, absorbing rainwater, providing insulation, creating a habitat for wildlife, increasing benevolence and decreasing stress of local inhabitants by providing a more aesthetically pleasing landscape, reducing ambient noise levels and helping to lower urban air temperatures by mitigating the heat island effect. They effectively utilize the natural functions of plants to filter water and treat air in urban and suburban landscapes.

The largest impact that green roofs have is on stormwater management. Continued expansion of urban development throughout the world has resulted in increasing amounts of impervious (hard) surfaces. These impervious surfaces decrease both infiltration and evaporative water loss from soils and plant surfaces due to the removal of native vegetation and natural ecosystems. In addition, pollutants deposited on these surfaces run off into our rivers and streams; further degrading water quality and surrounding natural habitats. Columbia Green’s products significantly decrease stormwater runoff, while also creating more energy efficient and sustainable buildings.

Columbia Green offers a Layered Assembly and a Tray System.

Columbia Green Technologies offers comprehensive green roof solutions for a variety of situations: 

  • extensive
  • semi-intensive
  • intensive roof gardens

Designers appreciate the flexibility to use trays or layered assemblies as the project specifications dictate. Building owners love the single source ‘Roof to Green Roof’ warranty options provided through our roofing partners.

Columbia Green Technologies Green Roof Layered Assembly    Columbia Green Technologies Green Roof Tray System


See our Technical Resources Library for complete design details on Green Roof Systems from Columbia Green Technologies.

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