Sourced from Ecopreneurist
Deep in the US south, Atlanta’s temperatures this month have been in the 90s most days, with high humidity and thunderstorms typical. It’s oppressive, and the city’s heat-capturing concrete and transportation carbon emissions increase temps up to 4 degrees at night over surrounding rural areas. But there’ some relief in grasp as new green roof technologies are helping the city to moderate its climate.
What is a Green Roof?
A green roof system is an extension of the existing roof which involves, at a minimum, high quality waterproofing, root repellent system, drainage system, filter cloth, a lightweight growing medium, and plants. They can be modular, with drainage layers, filter cloth, growing media, and plants already prepared in movable, often interlocking grids. But there are other approaches to green roofs, too. Sometimes they’re a loose laid/built-up whereby each component of the system is installed separately.
Green roof development involves the creation of “contained” green space on top of a human-made structure. Green roofs can provide a wide range of public and private benefits and have been successfully installed in countries around the world.