Green Roof Slope Design

However some slope is needed to promote positive drainage and prevent ponding and or prolonged saturation of the growing media.

Green roof slope design.

Green roofs are suitable for any pitch of roof. 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. A recent trend is to adapt green roof technology for low and steep slope applications.

This means that you can have a green roof that s best suited for flat surfaces slanted roofs and more. As the popularity of vegetated roofs grows in the u s building teams are finding new methods for greening rooftops. 0 5 roof angle green roof systems according fll without additional support. By dave barista managing editor.

Green roofs can be installed on rooftops with slopes up to jmr if baffles grids or strips. 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. There is no steepest pitch for a green roof they can even grow vertically. 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. The greengrid vegetative green roof system is suitable for low slope roof concrete deck plaza applications and other comparable scenarios. Roof slope treatment volume is maximized on relatively flat roofs a slope of i to jr. 5 15 roof angle systems with optional support depending on project.