The symposium on Single-Ply Roofing Technology was presented atDetroit, Michigan, 24 June 1981. The symposium was sponsored byASTM Committee D08 on Roofing, Waterproofing, and RelatedBituminous Materials and organized by D. E. Brotherson, Universityof Illinois, D. M. Greason, Dow Chemical Company, Bernard Jones,United States Bureau of Reclamation, J. J. Klimas, GAF Corporation,and H. E. Saint-Amour, Building Products of Canada, Ltd., H. E.Saint-Amour was symposium chairman. W. H. Gumpertz, SimpsonGumpertz & Herger Inc., was committee chairman and editor ofthis publication.