Revised code language in 2024
Essentially, the new language goes beyond the existing installation standards outlined in NFPA 780 and UL 96A. While the new language does not impact the placement or spacing of the lightning protection equipment, it clarifies that attaching LPS components to any part of the roofing system or assembly must be installed in accordance with the manufacturer’s installation instructions or specifications from a qualified design professional for the roof assembly, roof covering, metal edge systems, or gutter. Where LPS components are secured to, or penetrate the roof, they must be properly flashed.
The new language reads as follows:
1511.7 Other rooftop structures. Rooftop structures not regulated by Sections 1511.2 through 1511.6 shall comply with Sections 1511.7.1 through 1511.7.6.2, as applicable.
1511.7.6 Lightning Protection Systems. Lightning protection system components shall be installed in accordance with Sections 1511.7.6.1, 1511.7.6.2, and 2703 of this code.
1511.7.6.1 Installation on metal edge systems or gutters. Lightning protection system components attached to ANSI/SPRI/FM 4435/ES-1 or ANSI/SPRI GT-1 tested metal edge systems or gutters shall be installed with compatible brackets, fasteners, or adhesives,
in accordance with the metal edge systems or gutter manufacturer’s installation instructions. When metal edge system or gutter manufacturer is unknown, installation shall be as directed by a registered design professional.
1511.7.6.2 Installation on roof coverings. Lightning protection system components directly attached to or through the roof covering shall be installed in accordance with this chapter and the roof covering manufacturer’s installation instructions. Flashing shall be installed in accordance with the roof assembly manufacturer’s installation instructions and Sections 1503.2 and 1507 where the lightning protection system installation results in a penetration through
the roof covering. When the roof covering manufacturer is unknown, installation shall be as directed by a registered design professional.
