Extensive Green Roof System

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.

Extensive green roof system.

Extensive systems weigh anywhere from 10 to 25 pounds per square foot when dry which is why the interlocking system of trays is important otherwise strong winds could very easily blow the plantings away. Typically they have thin layers of substrate the growing medium to keep depth and weight to a minimum. Extensive green roofs are designed to be low maintenance lightweight systems with no general access. Extensive green roofs sedum roof systems.

These systems are ideal for efficient stormwater. 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. A properly designed and installed extensive green roof system can cost 108 248 m 2 10 23 sq ft while an intensive green roof costs 355 2 368 m 2 33 220 sq ft however since most of the materials used to build the green roof can be salvaged it is estimated that the cost of replacing a green roof is generally one third of the initial installation costs. Extensive green roofs.

Green roofs are also known as vegetative or eco roofs. They fall into three main categories extensive intensive and semi intensive.