Standard Practice for Installation of Roof Mounted Photovoltaic Arrays on Steep-Slope Roofs

Importancia y uso:

4.1 With the rapid growth of the use of photovoltaic systems in buildings, roof mounted arrays continue to be one of the most prevalent forms of installations. These roof mounted arrays typically feature penetrations into the roof system, which can result in water leakage issues if not properly flashed or applied to the roof system.

4.2 Structural integrity and durability of the application of the roof mounted array to the roof system must be adequate per applicable codes and regulations. This applies to both the photovoltaic module-to-array mounting structure interface and the array mounting structure-to-roof interface.

4.3 The installation of roof mounted arrays presents certain hazards that must be addressed, which include fall protection, carrying loads up ladders, wind and rain exposure during installation, and electrical exposure during connections.

4.4 The topics covered in 4.1 – 4.3 are potentially a significant barrier to broad acceptance of roof mounted photovoltaic systems if not adequately addressed.

Subcomité:

E44.09

Volúmen:

12.02

Número ICS:

27.160 (Solar energy engineering)

Palabras clave:

array mounting systems; photovoltaic (PV); photovoltaic (PV) installations; racking systems; roof penetration flashing; steep-slope roofing; structural loading;