Rob Roy knows what it means to live mortgage free. As director of Earthwood Building School since 1981, he has instructed many in the arts of natural building, and renewable energy. He is also the author of Earth-Sheltered Houses, Cordwood Building, Timber Framing for the Rest of Us, The Sauna, and Stone Circles. Rob and his family live in West Chazy, New York. You can learn more about Earthwood Building School at www.cordwoodmasonry.com.