Which statement most accurately describes the proper installation of rigid board insulation in a low-slope roofing system?

The proper installation of rigid board insulation in a low-slope roofing system requires that insulation boards be protected at the end of each day's work. This is crucial because exposure to the elements, such as moisture or UV radiation, can degrade the material and compromise the performance of the insulation. Insulation boards are often made from materials that can be adversely affected by water or prolonged exposure to sunlight, leading to loss of thermal resistance or physical damage.

Protecting the insulation helps ensure that it maintains its intended insulating properties and extends its lifespan, contributing to the overall efficacy of the roofing system. Additionally, taking care of the insulation during installation prevents any potential issues that may arise from weather conditions, ensuring that it is in optimal condition when the roofing is completed. This careful handling reflects best practices in roofing installation and helps avoid future repairs or inefficiencies in the roofing system.