Illinois Roofing Practice Exam 2026 – 400 Free Practice Questions to Pass the Exam

The statement that correctly describes the proper installation of rigid board insulation in a low-slope roofing system is that insulation boards should be protected at the end of each day's work. This is crucial to ensure that the insulation remains effective and undamaged. Rigid board insulation can suffer from exposure to moisture, UV rays, and physical damage if left uncovered. Protecting the boards at the end of each workday prevents these issues and maintains the integrity of the roofing system.

While options suggesting insulation boards can be left exposed or do not require protection during installation may seem convenient, they overlook the critical need to safeguard insulation from potential environmental and physical factors that could compromise its thermal performance and structural integrity. Therefore, ensuring the insulation is covered adequately at the end of each day of work is a best practice in roofing installation.