Fourth International Symposium on Roofing Technology
Walter J. Rossiter Jr
This report presents a summary of the Fourth International Symposium on Roofing Technology. The National Institute of Standards and Technology (NIST) Building and Fire Research Laboratory (BFRL) and the National Roofing Contractors Association (NRCA) have joined in sponsoring Symposia on Roofing Technology on a biennial basis since 1969. These Symposia are the major industry forums for the dissemination and discussion of research results and for the presentation of the latest advances in roofing technology. In 1997, NIST and NRCA were joined by CIB (International Council for Building Research Studies and Documentation), RILEM (International Union of Testing and Research Laboratories for Materials and Structures), the International Waterproofing Association (IWA), the National Research Council Canada (NRCC), and the Canadian Roofing Contractors Association (CRCA) in co-sponsoring the Fourth International Symposium on Roofing Technology. Fifty-nine papers grouped into 18 sessions were presented over 2 1/2 days of concurrent sessions. Because of the Symposium size, not all sessions are summarized in this report. Instead, a summary of selected sessions is presented to provide a flavor of the topics addressed. Proceedings of the Symposium are available from the NRCA, Rosemont, IL 60018. The subjects addressed in the technical sessions included: single-layer roofing, service life evaluation, asphalt shingles, metal roofing, wind engineering, fire, hail and earthquake, in-service performance, test methods for bituminous roofing, technology review, modified bitumens, moisture control, moisture detection and insulation, modeling of moisture control, and practice and design.