Illinois Roofing Practice Exam 2025 – The Comprehensive All-in-One Guide for Exam Success!

The statement that rigid board insulation may be attached to concrete roof decks with bitumen or liquid applied is accurate and reflects a common practice in the roofing industry. Rigid board insulation is often used in low slope roofing systems to provide thermal resistance and enhance the overall energy efficiency of the building. When it comes to concrete roof decks, bitumen or liquid adhesives can be used effectively to secure this insulation, ensuring a stable and durable installation.

Other options, while claiming different details about roof decks, lack the accuracy associated with the use of insulation in low slope roofing. For example, stating that roof decks are irrelevant ignores their critical role in supporting roofing materials and maintaining building integrity. Similarly, the assertion that rigid board insulation is never used on concrete roof decks is misleading since it is a well-accepted method to enhance insulation in such applications. Lastly, claiming that roof decks are always made of metal does not account for the wide variety of materials used in roofing systems, including wood, concrete, and various composites. Therefore, the correct answer highlights an essential and practical point in roofing construction.