TABLE OF CONTENTS Dave Flickinger
National Roofing Contractors Association ( NRCA)
Technical Service Section
Rosemont, Illinois
Building owners and designers have many deck, insulation, and roof covering materials to choose from for low-slope and steep-slope roof systems. The various systems available can fulfill a wide range of functions, such as energy conservation, acoustical and thermal insulation, and water, fire, and wind resistance. Their ability to do this over their expected service life depends on good design, quality materials, good application, and a commitment by building owners to maintenance.
This section is intended to give an overview of the following: materials for low-slope and steep-slope roofing (including deck, insulation and roof coverings), key design considerations, application, warranties, maintenance, and reroofing. At the end of this section, a list of trade associations (Art. 12.20) and a list of publications (Art. 12.21) is given for those readers interested in further specific information.
A roof system is an assembly of interacting roof components designed to weath-erproof and, normally, to insulate a building s top surface. The roof assembly includes the roof deck, vapor retarder and roof insulation (if they occur), and the roof covering.
A good roof is dependent upon the structural integrity of the deck and compatibility of the deck with the roof covering and other materials attached to it. Following are descriptions of commonly used decks. in flat panels. These panels provide some acoustical attenuation and some thermal resistance.
Cementitious wood-fiber panels
are composed of treated wood...
