By now, most roofing contractors know the basics about green roofing systems along with their many benefits. What started in Germany more than 40 years ago, but was viewed by many as just a fad for several years in the United States, has now become quite common on rooftops throughout North America. Much of this popularity is the result of the fact that as more and more green roofs have been installed, their benefits and features have been more thoroughly realized, analyzed and reported.

Green roofs are quite common in Germany and other parts of Europe, as well as in Asia; however, few or only limited studies evaluating their benefits have been conducted. The Denver facility’s EPA evaluation will likely be one of the most thorough evaluations ever undertaken. 

When the University of Wisconsin considered installing a green roof, university officials realized they needed some basic education on the topic. Their inquiries helped the university more thoroughly understand green roofing systems and their benefits.