There are three forms of green roofing:

Extensive

Typically the least costly option to construct and maintain. Comprised of succulents, herbaceous plants and grass plants that cope with a wide range of conditions typically found on a flat roof. Requires minimal maintenance or propagation and naturally changes over time with the appearance of new plants. Various care activities, such as nutrients, may be required, depending on climate conditions and other factors.

Semi-intensive

Consists of ground cover (grass, shrubs and coppices). Generally offers fewer options than Intensive Green Roofs (see below). Requires minimal watering and feeding.

Intensive

Offers the most options, including the planting of shrubs and coppices and grassed areas. Can also include the planting of a tree. Plantings can be on one level or several different levels. Finished design can be similar to a park facility. This form of green roofing places heavy demands on the layered superstructure below the plants.

Key Environmental Benefits

Retains 60-100% of incoming rainfall. The resulting decrease in run-off helps reduce sewer system overflow and runoff of airborne contaminants.

Energy Savings. Cooling is achieved naturally because green roofing acts like rooftop insulation.

Creation of new habitat. A green roof is alive with microorganisms, insects, butterflies, and birds.

Reduced Urban Heat Island Effect. Green roofing reduces the increase in regional temperatures caused by thermally loaded cityscapes.

Improved air quality. The plants that make up a green roof absorb carbon monoxide and release oxygen, processes that lead to improved air quality and reduced air pollution.

Less noise pollution. Green roofs naturally absorb sound, leading to a 10-30 decibel reduction in outdoor noise and a 40-50 decibel reduction in indoor noise.

Is green roofing right for you? Get the answer by contacting us today online or call 416-785-5129.