b'CORROSION RESISTANCEthat scrape or damage the coating offAlthough coatings offer a high level of protection, the screws. Storage of the fasteners is also important.Thatstandardtestmethodisthethey are prone to damage both from handling and ASTM B117 Salt Spray Method, and the result is determination of a time periodfrom their intended use; being installed through before corrosion can occur. A coating is designed for X amount of exposurelayers of metal flashing and/or material that scrape witha5percentsaltsprayenviron-ment. According to published Grabberor damage the coating off the screws. Storage of the ConstructionProducts,theyfoundon average the U.S. standard is a 24-hourfasteners is also important.requirement, Germany is 48 hours, and Scandinavia is a 96 hour requirement.ThisleavesituptotheDesign Authority, or the Contractor if there is noformalDesignAuthorityinvolved with the Work, to identify if the Work will be occurring within a coastal envi-ronment subject to salt spray. If there isareasonableexpectationtheWork may be subject to salt spray or any other corrosive environment such as within a Natatorium (aquatic facilities), a higher standardofcorrosiveprotectionmust be selected. These requirements should beconsideredcumulativeandeach factor merits its own consideration.In summary, the American National Standards Institute (ANSI) in conjunc-tion with the Single Ply Roofing Institute (SPRI) published ED-1 2019, a Design StandardforEdgeSystemsusedwith LowSlopeRoofSystemspaper.Item 7.3 of that Standard describes a practical approach to materials used for mechan-ical attachment of sheet metal cap flash-ings and wind clips. Both designers and contractors should review this standard www.rcabc.org l35'