Green Roof Slope Design

The greengrid vegetative green roof system is suitable for low slope roof concrete deck plaza applications and other comparable scenarios.

Green roof slope design.

A low slope roof is a roof surface with a maximum slope of 2 inches of rise for 12 inches of run 16 degrees as defined in american society for testing and materials standard astm e 1918 97. Green roofs are suitable for any pitch of roof. However some slope is needed to promote positive drainage and prevent ponding and or prolonged saturation of the growing media. 0 5 roof angle green roof systems according fll without additional support.

While the basic components of a sloped green roof are similar to that of a flat system building teams must pay particular attention to water management erosion control and maintenance. Pitched green roof design considerations. 5 15 roof angle systems with optional support depending on project. Roof slope treatment volume is maximized on relatively flat roofs a slope of i to jr.

Green roofs can be installed on rooftops with slopes up to jmr if baffles grids or strips. By dave barista managing editor. 15 45 roof angle appropriate measures to cope with shear forces and erosion green wall. It all comes down to the design as well as the types of plants that are added to the green roof.

However when dealing with a sloped green roof with a pitch of more than 9 5 you ll need a design solution for retaining water and ensuring the substrate stays in place. As the popularity of vegetated roofs grows in the u s building teams are finding new methods for greening rooftops. A recent trend is to adapt green roof technology for low and steep slope applications. Support a green roof.