This manual provides exhaustive technical information about the design, materials and installation techniques applicable to membrane roof systems used in low-slope applications. The manual includes information about roof decks, air and vapor retarders, rigid board insulation, roof membranes, fasteners, surfacing, accessories, roof system configurations and roof re-coverings. Also included are 179 construction details for built-up roof (BUR) membrane, polymer-modified bitumen, liquid-applied, EPDM and other single-ply membrane roof systems.