Intensive Extensive Green Roof Systems

A green roof is an additional roof system on top of an existing roof made up of a layer of planted vegetation.

Intensive extensive green roof systems.

Intensive green roofs offer a great potential for design and biodiversity. A typical growing medium depth of an intensive green roof is 6 inches or more. There are two main forms of green roofs intensive and extensive. These are covered with low growing plants such as evergreen sedums.

Extensive green roofs. Extensive green roof an extensive green roof system is characterized of its vegetation ranging from sedums to small grasses herbs and flowering herbaceous plants which need little maintenance and no permanent irrigation system. Intensive systems allow the designer to create a park like setting so they are the best option for roof gardens that will be occupied. Intensive green roofs weigh from 35 pounds to beyond 100 pounds per square foot when dry it is all a matter of the soil depth which is affected by the amount of mounding that is used.

The growing medium depth for an extensive green roof system is typically 6 inches or less. Besides the visual impact of an extensive green roof they also provide a natural habitat for birds and insects. Intensive roofs take more time to manage as they can hold up to 150 pounds of vegetation per square foot. From a distance an extensive sedum roof can be mistaken for a grass field.

To start with take a look at the most simple family of green roofs. Intensive green roof garden roof roof garden an intensive green roof system is characterized by its variety of vegetation ranging from herbaceous plants to small trees with professionel maintenance and advanced green roof irrigation systems.