Tech Today

Fire testing roof-mounted PV systems

The Solar America Board for Codes and Standards (Solar ABCs) has conducted limited testing of the fire resistances of rack-mounted photovoltaic (PV) panels installed over fire-classified roof coverings. If you are involved with the design or installation of roof-mounted PV systems, I encourage you to be aware of this testing and the concerns it raises.

Solar ABCs testing

Underwriters Laboratories (UL) Inc.'s classifications for PV modules and panels indicate installing them on a roof system may or may not adversely affect the roof system's external fire exposure if the PV modules or panels have a lesser fire-resistance rating than the roof system.

To determine whether rack-mounted PV modules or panels affect roof systems' fire classifications, Solar ABCs conducted a series of spread-of-flame and burning-brand tests on representative rack-mounted PV panels installed on fire-classified roof systems. The tests are similar to those conducted on PV panels and roof systems to determine their individual fire classifications.

Log in or register for FREE access to this article and other Professional Roofing online content.

Not a professionalroofing.net user?

Register now for free access
  • Full access to every article
  • Online Web exclusive information
  • Photo gallery
  • Breaking news
  • Online classified ads

Already a professionalroofing.net user?

User name:

Password:

 


Forgot Your Password?