Purple-roof

What is Evapotranspiration Part 2: Green roofs are tricky. On the one hand, we want evapotranspiration to be very high to get rid of stormwater as quickly as possible and prepare to absorb the next storm. On the other hand, we want the plants to conserve water to not dry out in the thin soil media between storms. We also do not want to have to irrigate green roofs to support plants. It is a challenging task to design a plant palette that minimizes the need for additional irrigation. LEED, in particular, is giving the green roof designer a tough time balancing the desire for native plants, in a very shallow soil profile, and yet at the same time forbid irrigation. This shows the importance of using different roof systems for different climates and abandoning the current strategy of one-size-fits-all for soil and vegetation. Read this article on our blog: https://www.purple-roof.com/post/what-is-evapotranspiration Don't hesitate to contact us if you have any questions, suggestions, or comments!