Low Pitch Green Roof

Sloped roofs retain less water in general and the moisture content varies from the ridge to the eave lowest edge of the roof.

Low pitch green roof.

Green roofs lower surface temperatures often by 50 degrees fahrenheit or more. Drainage thickness of growing media plant varieties etc. Moreover low slope metal roofs are not prone to the degradation experienced by organic materials enabling these roofs to better resist the elements. The most crucial component of any sloped green roof is the confinement system which holds the growth medium in place during the roof s early stages of development.

In retrofit projects a sub framing system is attached to the existing flat roof surface to provide a minimum 12 roof pitch. Most vegetation will grow on quite sever slopes but the designer must consider the practicalities of installing the green roof and just as importantly how the roof is to be maintained. Converting your roof to green offers many benefits to a homeowner from energy savings to expanding natural habitat. Above 5 degrees roofs are considered to have a pitch which may affect the design.

Before the plants go up a structural engineer should check to ensure that the roof can support the weight of the engineered growing medium and plants. For a green roof installation that pitch should be at least inch per foot of run.