Columbia University in the City of New York

In many countries for hundreds (if not thousands) of years of "green roofs" were the standard design, mainly thanks to the excellent insulating qualities of topsoil and turf. In cold climates of Iceland and Scandinavian sod roofs helped to retain heat in their homes, and in tropical countries such as Tanzania, kept cool in the buildings. In the Canadian province of Newfoundland and Nova Scotia is still possible to meet early copies of "green roofs", brought the Vikings and later – the French colonists. Up until the mid xx century. "Green roofs" were considered only as a local construction practices.

However, in 1960. concerns associated with deteriorating environmental conditions, as well as the rapid decline in the area of gardening in the large cities have revived interest in "green roofs, especially in Northern Europe. Was carried out a wide range of new technical studies, including study components, membranes, drainage systems, light fertile layers, as well as research on the acceptability of plants. A key motivation for this support were public benefits associated with a decrease in the volume of stormwater and improving water and air quality. As a result, created a sector of the construction industry and "green roofs" became an integral part contemporary urban landscape.

According to some sources, the U.S. and Canada lag behind Europe, at least ten years in terms of investment in infrastructure, "green roofs", as an option for solving many problems quality of life faced by the modern metropolis. In the early 1990's.

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