How Many Green Roofs Are Built

This is a relatively new phenomenon and was developed in germany in the 1960s and has spread to many countries since then.

How many green roofs are built. In this report we present an analysis of water benefits from an array of observed green roof and control non vegetated roof project sites throughout nyc. In more scientific terms green roofs help filter and clean air as well as retain storm water. Were chicago new york city toronto philadelphia and cincinnati. This can lead to new opportunities in habitat creation as well as biodiversity preservation.

Green roof systems may be modular with drainage layers filter cloth growing media and plants already prepared in movable often interlocking grids or loose laid built up whereby each component of the system may be installed separately. It is planted over a specially designed water proofing membrane that ensures protection to the tradition roof of a building. Modern green roofs are made of a system of layers placed over the roof to support soil medium and vegetation. Installed the most green roofs in north america this past year with 1 326 872 square feet.

Improved energy efficiency increased lifespan of the roof membrane proper sound insulation and many more. The projects are located on a variety of building sites and represent a diverse set of available extensive green roof installation types including vegetated mat built up and modular tray systems as well as plant types. In 2012 the north american green roof industry recorded 982 green roof projects which was a 24 increase from 2011. Green roofs are also becoming increasingly popular in the united states although they are not as common as in.

Green roof development involves the creation of contained green space on top of a human made structure.