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 green roofs. Replacing the impervious surface of a conventional roof with. These systems are ideal for efficient stormwater. 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.

Unlike conventional earth covered structures garden roof assemblies are lightweight and can be installed on a wide variety of new and existing structures. Garden roof assembly hydrotech s garden roof assemblies combine the proven performance of our monolithic membrane 6125 roofing waterproofing with proven green technology. They fall into three main categories extensive intensive and semi intensive. An extensive garden roof assembly can be applied to flat roofs and sloping roofs with a pitch of up to 12 12 or 45 provided the appropriate measures are taken to cope with the shear forces and soil retention.

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. 15 to 50 per square foot. Green roofs are not created equal. Extensive green roofs are typically defined as having growing media less than 8 deep use small low growing plant species such as succulents require minimal maintenance and relatively low water needs.

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. Green roofs are also known as vegetative or eco roofs. 8 to 20 per square foot. Extensive roofs are typically lightweight and can be installed over a variety of structures including metal roof decks.

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. For a conventional roof. The biggest benefit of extensive green roofs is that they need very little maintenance. A modular tray system filled with 4 6 of growing media and plantings is generally the simplest and most versatile means of creating an extensive green roof.

The hydrologic and thermal performance of six different extensive green roofs and reflective and non reflective roofs in a sub tropical climate simmons et.