Architects and specifiers consult and reference GA-216 in construction documents to guide installation of gypsum panels over appropriately spaced and installed wood or steel framing and to determine when, and if, control joints should be used. Specialty contractors rely on GA-216 to ensure proper handling and storage of gypsum panels on the jobsite and appropriate installation and finishing methods. Application and Finishing of Gypsum Panel Products dictates the layout of gypsum panel products, including proper placement of joints around window and door openings, and selection of fastener types and fastener spacing. GA-216 also serves as a guidance document for building inspectors.