Rooftop-mounted photovoltaic (PV) system installations have grown in popularity and acceptance in the U.S. However, with many installations, there appears to be a lack of adequate consideration for the roof systems over which PV system installations are applied.
Regardless of the electricity production and associated cost savings a rooftop-mounted PV system can provide, if a rooftop PV system installation results in leakage or reduced roof system performance or service life, the building owner will be unhappy with the outcome.
Following is an overview of roof system considerations that need to be evaluated and implemented with rooftop-mounted PV system installations.
Why rooftop PV?