Owner and principal of AD Greenroof, Angie Durhman, GRP, holds a Master’s degree in Horticulture from Michigan State University, where she studied green roof plant performance and environmental sustainability, and is a well-respected expert in the sustainable building and landscape industry. With national industry support since 2002, she has created approximately 55 acres of vegetated roofing across the country. While many square feet are classified as extensive, Angie has been involved in numerous other signature projects categorized as native, semi-intensive, urban rooftop farms, slopes, and intensive roofs.