Green Roof Thickness Dimensions

The nominal thickness of a green roof is the approximate total height of the soil and drainage components that constitute the green roof system excluding the roof structure insulation waterproofing and plants it is common practice to use the term extensive to describe green roofs that are very thin and will only support hardy drought resistant vegetation.

Green roof thickness dimensions.

Green roofs can help reduce energy costs for a building by acting as another layer of insulation between the inside and outside of the roof. This is most noticeable in intensive green roofs since there is a thicker and more consistent layer of soil which provides a higher insulating value. Each green roof is unique as their designs and performance vary by region climate and building type and use. Moisture retained by saturated media after free draining 40 60 typ.

Simpler shallower cheaper green roofs with limited variety of plants are called extensive green roofs these systems are easy to install require little to no maintenance or irrigation and weigh the. Moisture retained by media that cannot be removed aka wilt point 12 18 typ. A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium planted over a waterproofing membrane it may also include additional layers such as a root barrier and drainage and irrigation systems. Green roof components growing media water holding capacity field capacity maximum water capacity astm test.

Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although.