Rozwój "zielonych dachów" na przestrzeni wieków

Green roofs have a long tradition worldwide and their history dates back thousands of years. The oldest and most famous green roofs were the Hanging Gardens of Babylon. More recent forebears of engineered green roofs are the sod - covered homes of Northern Europe, where sod roofs and walls have been used as construction materials for hundreds of years. Green roofs serve as a type of insulation and historically have been used to insulate against both low and high temperatures. In Europe modern green roofs were developed in Switzerland in the 1960s and a few years later in Germany and have spread to many countries around the whole world. Today it is estimated that about 10% of all German roofs have been "greened".