Green Roof Psi

The rigid insulation material is typically extruded polystyrene xps which is resistant to moisture absorption and has been used in green roof applications for decades.

Green roof psi.

A green roof is a green space that is created by adding various layers of plants and a growing medium to the top portion of a traditional roofing system. Removing unnecessary finishes may provide sufficient capacity for a green roof of equal weight. Some roofs are finished with substantial architectural build ups such as concrete pavers or stone. Green roofs are not created equal.

Available in densities from 10 psi to 60 psi it has the same compression strength as extruded polystyrene at a fraction of the cost. The hydrologic and thermal performance of six different extensive green roofs and reflective and non reflective roofs in a sub tropical climate simmons et. Garden roof assembly american hydrotech inc. The allowable depth of the green roof is determined by the load capacity that can be allocated to it.

Green roofs can be planted with herbs grasses flowers even trees in an exciting variety of colors textures scents and heights. Al 2008 urban ecosystems vol. Note that it is not like a traditional roof garden in which planting is done in free standing containers as well as planters that are placed on an easy to access roof terrace. Green roof construction eps expanded polystyrene is becoming the most popular insulation void fill material for green roof construction.

When the depth of water stored in the green roof growing media was treated as a variable roof storage was varied from 0 25 to 3 0 inches of storage using the 28 years of state college s daily rainfall data the results see figure 3 showed that the 3 5 inch green roof with 1 6 inches of water storage with a drainage layer and plants was an.