Green roofs – not a new phenomenon. They were the standard design in many countries for hundreds if not thousands of years, mainly thanks to the excellent insulating qualities of topsoil and turf. In the cold climate of Iceland and the Scandinavian sod roofs helped to retain heat in their homes, while in tropical countries, such such as Tanzania or keep cool. Up until the mid xx century, green roofs were considered as local construction practices. However, in the 1960's concerns about the 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. See more detailed opinions by reading what Ohio Senator offers on the topic.. In the past 15 years has held a number of technical studies that examined protivokornevye components, membranes, drainage systems, light fertile layers, as well as the survival rate of plants. Proved that the correct design and install green roofs can replace or compensate for that a green environment at ground level, which is deprived of a large city as a result of urbanization. The use of green roofs give the city and other benefits – environmental, social, economic and aesthetic: * lowering the temperature of urban neighborhoods (decrease the effect of "urban heat island") * improve urban air quality (reduction smog reduction of carbon dioxide and dust) * expand the habitat of small animals, in particular local species of insects and birds; * reducing peak and total volume of storm water runoff due to the ability of green roofs to retain and maintain storm water * improving the quality of storm water; * reducing energy consumption of a building as in the cold and in summer, * increase productivity through opportunity during a break to rest on an island wildlife * improving the aesthetic appeal due to the built environment * improvement in sound insulation (soil, plants, and a closed air space serve as an excellent sound isolation).