Green Roof Soil - Great Opportunities Ahead! Part 2 by Purple-RoofWritten and narrated by Dr. Anna Zakrisson_____Green roofs can retain a lot of rainwater. Small and medium storms are generally not a problem. A roof can retain about 80% of the frequency of all storms, but these storms are routine rain events, and they only make up about 50% of the total rain volume. The remnant 50% is what becomes a flooding risk.This 50% is the Achilles heel of the current green roof industry but is an issue that is intensively researched, and many ingenious solutions are about to hit the market.Extreme storms are expected to become more frequent over the years to come. Thus, if green roofs are to become the best solution for stormwater management, we need to look at these matters from many different perspectives, and that includes the often overlooked, but central, topic of soil biology.______Read the full article on the Purple-Roof blog:www.purple-roof.com/post/green-roof…anagement-tools_______Don't hesitate to contact us if you have any questions at[email protected]