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Sealants Sealants: The Professional Guide, by the Sealant & Waterproofers Institute (1800 Pickwick Ave., Glenview, Ill. 60025), 1984. 64 pages softcover; $10 for members or $14.95 for nonmembers. by Paul Hanke Synthetic rubber elastomeric sealants— including polysulfides, urethanes, silicones, acrylics, acousticals, butyls and acrylic latex—were developed in the 1950s Major topics include joint types and design, a generic discussion of sealants by classification, and writing specifications. Also covered are joint preparation, tools, and repair and maintenance. overview of sealants and their applications for architects, engineers, specifiers and contractors. It will be of most use to the first three, as it is assumed throughout that they have done the legwork for the contractor. Major topics include joint types and design, a generic discussion of sealants by classification