ASTM E2766-13
Standard Practice for Installation of Roof Mounted Photovoltaic Arrays on Steep-Slope Roofs

Standard No.

ASTM E2766-13

Release Date

2013

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E2766-13(2019)

Latest

ASTM E2766-13(2019)

Scope

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 through 4.3 are potentially a significant barrier to broad acceptance of roof mounted photovoltaic systems if not adequately addressed.

1.1 This practice details minimum requirements for the installation of roof mounted photovoltaic arrays on steep-sloped roofs with water-shedding roof coverings. These requirements include proper water-shedding integration with the roof system, material properties, flashing of roof penetrations, and sufficient anchoring per regional design load requirements.

1.1.1 This practice does not apply to building-integrated or adhesively attached photovoltaic systems that are applied as roof-covering components.

1.2 This practice does not cover the electrical aspects of installation.

1.3 Installation considerations are divided into two distinct aspects: the interface between the photovoltaic module and the array mounting structure, and the interface between the array mounting structure and the roof or roof structure.

1.4 Safety and hazard considerations unique to this application, such as worker fall protection, electrical exposure, accessibility of modules, and roof clearance around the perimeter of the array are addressed by other codes, standards, or authorities having jurisdiction.

1.5 This practice is intended to provide recommended installation practices for use by installers, specifiers, inspectors, or for specification by photovoltaic module manufacturers.

1.6 This practice provides minimum guidelines and should be used in conjunction with module and mounting system manufacturers’ instructions. This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM Standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without ......

ASTM E2766-13 Referenced Document

• ASTM D1079 Standard Terminology Relating to Roofing and Waterproofing
• ASTM D1761 Standard Test Methods for Mechanical Fasteners in Wood
• ASTM E136 Standard Test Method for Behavior of Materials in a Vertical Tube Furnace at 750_oC
• ASTM E772 Standard Terminology Relating to Solar Energy Conversion

ASTM E2766-13 history

• 2019 ASTM E2766-13(2019) Standard Practice for Installation of Roof Mounted Photovoltaic Arrays on Steep-Slope Roofs
• 2013 ASTM E2766-13 Standard Practice for Installation of Roof Mounted Photovoltaic Arrays on Steep-Slope Roofs