scope:

This standard applies to all rigid photovoltaic module systems that are:

▪ Mechanically fastened through a single-ply, polymer-modified bitumen sheet, built-up roof, or liquid applied roof cover certified per FM Approvals Standard 4470.

▪ Adhered to a single-ply, polymer-modified bitumen sheet, built-up roof, or liquid applied roof cover certified per FM Approvals Standard 4470.

▪ Mechanically fastened through a steep slope roof assembly certified per FM Approvals Standard 4475.

▪ Mechanically fastened to a panel roof cover assembly certified per FM Approvals Standard 4471 (using clamps or other types of fasteners).

▪ Loose laid and ballasted over a fully adhered single-ply, polymer-modified bitumen sheet or built-up roof cover assembly certified per FM Approvals Standard 4470.

▪ Secured to racks and/or rack framing which are independently secured to the building structure, roof deck, or metal roof cover or ballasted. It also applies to the rack itself and its securement.

This standard evaluates rigid roof-mounted photovoltaic module systems as part of a finished roof assembly for their performance in regard to fire from above the structural deck, simulated wind uplift, susceptibility from hail damage, seismic performance requirements and gravity load resistance. The standard is intended to evaluate only those hazards investigated and is not intended to determine suitability for the end use of a product.

This standard only addresses the photovoltaic module system and does not address any other electrical component utilized to supply the generated electrical power to the facility.

This standard does not qualify flexible photovoltaic modules. Flexible photovoltaic systems are evaluated per FM Approvals Standard 4476.

Purpose

This standard states the testing and certification requirements for rigid photovoltaic modules that are installed with a certified roof assembly.

Testing and certification criteria may include, but are not limited to, performance requirements, marking requirements, examination of manufacturing facility(ies), audit of quality assurance procedures, and a surveillance program.