What is important to photograph during the installation of a rooftop lightning protection system?

Photographing any portion of the lightning protection system that will be concealed is crucial for several reasons. First, once the installation is completed, many components may be hidden from view, making it difficult to verify their installation, alignment, and condition in the future. Documenting these hidden parts with photographs ensures that there is a clear record of how the system was installed, including the positioning of conductors, grounding connections, and other important elements that are integral for the system's effectiveness and compliance with safety standards.

This documentation can be valuable for maintenance checks or any future modifications to the system, as it provides a reference point for what is underneath the finish surface. Knowing the exact layout and installation details can help in troubleshooting, updates, or inspections later on. In contrast, while areas with visible damage can be important to document, they do not specifically pertain to the functioning of the lightning protection system itself, and measuring the rooftop area is typically additional context rather than a primary concern during installation. Thus, the focus on concealed portions underscores the necessity of thorough documentation in ensuring the ongoing effectiveness of the lightning protection system.