About the Author
Charles D. Miller, P.E., is a member of the Technical Advisory Committees for the Center for Green Roof Research at the Pennsylvania State University and the Green Roofs for Healthy Cities Coalition, a Toronto-based research and public policy organization. He is also a member of the ASTM Subcommittee E06.71 on Sustainability, Buildings; and the German Roof-Gardening Association. Miller is the founder and president of Roofscapes, Inc., which offers the Roofmeadow family of green roof systems through its national network of licensed green roof installers.