A green roof project that wants to be a rooftop farm. That sounds cool right? Well in researching this I soon found out that rooftop farming is a very young concept in the green roof industry . Although green roofs began to be designed into buildings over 40 years ago, the incorporation of rooftop gardens for food production have really only taken root in the last decade. Farms like the Brooklyn Grange in NYC being one of the best examples of a large scale food production in a city and on a roof. 
In doing such a project there a number of concerns that immediately come to mind. First on is weight and type of "soil" medium to use. Then comes irrigation, drainage, water use and all the other supportive infrastructure needed.  To address these issues I began to research the companies and manufactures of green roof products as well as talk to the farmers currently farming the roof. I interviewed a number of farmers and acquired samples from over a dozen companies. I soon decided that it was good to start experimenting with some prototype mock ups to test it all out on a small scale before a 11,000 square foot farm was to be built.