SO, WHAT ARE GREEN ROOFS?
A green roof, also referred to as an eco or living roof, is a layer of vegetation that is installed on top of an existing flat or slightly sloped roof. These roofs have been used as an alternative for lost natural spaces and ecosystems in urban cities. Green roofs fall into two categories: extensive and intensive. An extensive roof has a shallow soil depth, minimal watering requirements, and limited diversity. This type of vegetation is usually utilized for large- sized roof tops because it is simple to install, and it is lighter than intensive vegetation. An intensive green roof has deeper soil layers, improved diversity (including trees), and a better performance. Intensive roofs are generally roof gardens and are visually accessible.
COMPONENTS OF GREEN ROOFS
The different components of green roofs- vegetation, growing medium, root barrier, drainage, insulation, waterproof membrane, and structural support- are shown in the picture on the left. The most important layer is the water proof membrane, which protects the structure from water that can accumulate over time. The type and design of vegetation will change depending on where it is installed. However, the layers of the green roof will stay the same no matter what.
