Intensive Roof Design

An intensive green roof weight varies from 35 to beyond 100 pounds per square foot when dry.

Intensive roof design. Vegetative roofs are divided into two categories. The growing medium depth for an extensive green roof system is typically 6 inches or less. Intensive style green roofs are the most detailed and strongest of them all. 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.

With that in mind the real variable in the weight is the depth of planting material. An intensive green roof often contains more soil for the production of large roots a wider root barrier and more. 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 offer a great potential for design and biodiversity.

By allowing the designer to create a setting of an urban park on a building s roof an intensive green roof design comes with a unique value proposition. Intensive designs usually consist of a mixture of hard and soft landscaping and incorporate plants that require regular maintenance such as watering fertilizing and mowing. Intensive roofs are accessible and often include areas of hardscape structures and other features that create beautiful gardens on the roof. 1 extensive vegetative roofs which are 6 inches or shallower and are frequently designed to satisfy specific engineering and performance goals and 2 intensive vegetative roofs which may become quite deep and merge into more familiar on structure plaza landscapes with promenades lawn large perennial plants and trees.

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. Once the plants are installed and the soil is moist these rooftop green spaces can weigh as much as 150 pounds per square foot. Intensive roof design intensive roof construction requires roof drains that will allow sufficient drainage yet protect the integrity of the growth media and vegetation. The roof drain must allow for sub surface drainage while providing aesthetically pleasing grates and domes.

The planting medium in intensive green roofs starts at 6 inches although you will see some wiggle room in various definitions and really elaborate designs may exceed a couple feed. Plant selection and design greatly affects the maintenance required for the upkeep of these roofs. This system supports everything from small personal home gardens to full scale public parks. A typical growing medium depth of an intensive green roof is 6 inches or more.

Greengrid 6 inch or 8 inch option.