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ICPI Certification
A green roof, also known as a living or planted roof, offers an attractive and energy-saving alternative to a conventional rooftop for both existing and new structures. A green roof can keep buildings cooler, save energy, reduce water runoff, and extend the useful life of the roof, while adding beauty and useable space.
Types:
Extensive systems, common in residential applications, feature low-lying plants, such as succulents, mosses, and grasses, in a relatively thin layer of soil (1-6 inches). Extensive systems have less of an impact on the roof structure, weighing 10-50 pounds per square foot on average, and are generally accessible only for routine maintenance.
Intensive systems feature deeper soil and can support larger plants including crops, shrubs, and trees. They can be harder to maintain, depending on the plants used, and are much heavier than extensive systems—ranging from 80 to 120+ pounds per square foot. Intensive systems are typically designed to be accessible for relaxation and/or harvesting.
All green roof systems consist of four basic components: a waterproofing layer, a drainage layer, a growing medium, and vegetation. Plants used in green roof applications must be easy to maintain and tolerant of extreme weather conditions including heat, freezing, and drought, and must have relatively shallow, fibrous root systems. The plants should also be resistant to diseases and insects, and not generate airborne seeds in order to protect surrounding plantings. Climate-appropriate succulents, mosses, and grasses are often best suited for extensive green roof systems. These types of plants are available in a variety of colors, in both deciduous and evergreen options.
For more information, visit LiveRoof.com or Green Roofs for Healthy Cities.Planting today for a sustainable tomorrow.
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