On June 4^th and 5^th APT WGLC co-sponsored the Building Science and Preservation Workshop with APTI and the School of the Art Institute of Chicago. William Rose, author and research architect from the University of Illinois at Urbana-Champaign presented on the physical science including fluid flow, water vapor, radiation, and heat flow. The event was attended by local professionals as well as several people from out of state and Canada. APT WGLC appreciates the opportunity to host this event with APTI and SAIC.