Intensive Green Roof Section

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 green roof section. The intensive green roof uses planting mediums that have greater depth than the extensive green roof. Another term for these green roofs is rooftop garden. A green roof is by essence a vegetal cover. The modern system requires the use of several layers answering to specific and necessary functions.

The composition follows a general canvas that will get shaped by the choice of the green roof type and materials. What is a green roof. Intensive green roofs have higher maintenance requirements than extensive or a semi intensive roofs. Intensive green roofs require the deepest soil and have the greatest impact on the structural design but they also accommodate all types of plantings including large shrubs and trees.

Green roofs are also known as vegetative or eco roofs. The growing medium depth for an extensive green roof system is typically 6 inches or less. Intensive systems allow the designer to create a park like setting so they are the best option for roof gardens that will be occupied. A typical growing medium depth of an intensive green roof is 6 inches or more.

Permanent irrigation systems incorporated into the scheme will also have maintenance schedules. This deeper soil allows intensive roofs to accommodate large plants and dramatic plant groupings. The weight of an intensive green roof system is critical for a particular type of plant and the minimum intensive green roof thickness should ranges from 150mm for a wild grassland 300mm for bushes and 3 meters in height and at least 400mm upper substrate and 250 mm lower substrate for small trees of approximately 10 meters. These maintenance tasks would be similar to those required for any ground based hard or soft landscaping elements.

Although there are no precise definitions of them an extensive green roof has a shallow growing medium usually less than six inches with a modest roof load limited plant diversity minimal.