Looking at green roofs through a water balance lens: “How much better does a ‘blue-green connected’ roof perform?”
“The light bulbs started going off and I started doing some research. There was not much information. So, it felt like an ingenious idea except when I went to my professor to discuss it. How do you get the water back up, he asked. We do not want to pump because that uses energy. Then I started doing more research. I was thinking in terms of something like sponge towels, that acts like capillary irrigation. They transfer water from more wet moist to less wet moist. In the summer, these green roofs would not need irrigation water and we could use some of the water we have stored from each rainfall,” stated Harvy Takhar.