Most roofing types, residential and commercial, are compatible with PV roof systems. As long as your roof has an equivalent or longer lifespan than the PV system, your building is eligible for a retrofit. Business owners can choose from three PV system installation options for their commercial building: attached, ballasted, or a hybrid of the two.
An attached PV system relies on surface penetrations and connections to the building’s framing. The ballasted option relies on the weight of the system, including the panels, racking, and other material to hold down the panels. A hybrid is a minimally attached structure that involves penetration and ballasting.