While green roofs have been around since the dawn of civilization, the modern green roof (often referred to as a "living roof") has only been around since the late 70's. Historically, green roofs were earth covered structures consisting of sod roofs, hollowed out hills, or patio roof gardens. What makes modern green roofs different is their specially designed drainage and root protection components along with their engineered light weight growing media. There are many different types, benefits, and standards for modern green roofs. To learn more about modern green roofs click on the links below.