New! Green Roofs Information Sheet

It is estimated that 15-30% of total urban land area is comprised of rooftops. Wouldn’t it be great if this space could be turned into a force for cleaner water and air, energy savings, beauty, recreation and food? Throughout history “green roofs” have done just that. A “green roof” is the partial or complete covering of the roof structure with vegetation. A typical “green roof” consists of layers including vegetation, a growing medium, drainage, waterproofing membranes and occasionally root barriers. There are two types of green roofs, intensive and extensive. “Intensive” roofs can support a wider variety of plant species because they are thicker with a reasonable depth of soil…

Read more of our Green Roofs Information Sheet here.