Intensive Green Roof Diagram

8 to 20 per square foot.

Intensive green roof diagram.

What is a green roof. Typically these roofs will have more soil and some small shrubs as well as the low growing wildflowers and sedums found on an extensive roof. 4 plant evaluation notes the two 8 000 square foot green roofs lo cated on the north and south sides of the. The heart of the nophadrain extensive green roof system the nd 4 1h drainage system is the ideal under layer for an extensive green roof.

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 the growing medium depth for an extensive green roof system is typically 6 inches or less. Intensive green roofs. Green roofs can help reduce energy costs for a building by acting as another layer of insulation between the inside and outside of the roof. A green roof is a layer of vegetation planted over a waterproofing system that is installed on top of a flat or slightly sloped roof.

Larger green roofs can incorporate sections of varying depths that allow for many types of plants shrubs and trees. Vegetative roofs are divided into two categories. They require a layer of growing medium soil to support this much thicker vegetation layer. It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants.

These types of roofs can weigh 35 pounds per square foot or more when saturated not including trees. A 2006 study by the university of michigan comparing costs of conventional and green roofs showed that on average installing a green roof costs about 22 00 sq. Intensive green roofs are designed to support much larger items like bushes and small trees as well as a wider variety of plants. Green roofs are also known as vegetative or eco roofs.

This is most noticeable in intensive green roofs since there is a thicker and more consistent layer of soil which provides a higher insulating value. These systems are ideal for efficient stormwater. This multifunctional ce marked drainage system with high compressive strength protects the vegetation from water stagnation while at the same time storing water for dry periods in the built in water reservoir. 15 to 50 per square foot.

Although there are no precise definitions of. 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. These types of green roofs are called intensive green roofs. Semi intensive green roofs are a heavier system with a saturated weight of 30 to 50 pounds per square foot and a growing medium of 6 to 12 inches.

They fall into three main categories extensive intensive and semi intensive. You may find that they are referred to as roof gardens.