Click through (image above) to check out a virtual tour of the demonstration green roof atop the American Society of Landscape Architects headquarters in Washington, D.C.


The ASLA headquarters green roof was undertaken to demonstrate the environmental and aesthetic benefits of green roofs and to encourage more widespread use of green roofs. A retrofit project, the green roof replaced the original membrane roof on the [headquarters] building. One of the signature elements of the design is the use of two 25’-wide elevated “waves” formed by a structural skeleton filled with rigid insulation and covered with a green roof system. The waves rise to 6’2” and 5’4” above the walking surface, which positions flowering plants at eye level and creates an intimate, semi-enclosed space.