Illinois Roofing Practice Exam 2025 – Complete Exam Preparation Guide

The material primarily used to create concrete boards is a combination of fiberglass and cement. This combination provides the boards with strength, durability, and resistance to moisture, making them suitable for use in areas that require water resistance, such as bathrooms and kitchens. The fiberglass enhances the structural integrity and flexibility of the concrete board, preventing it from cracking under stress, while the cement provides the robust base necessary for its applications in construction and roofing. This material choice ensures that the boards can withstand harsh environmental conditions and support various exterior finishes, aligning with industry standards for building materials.

Other materials listed, such as wood and resin, steel and aluminum, or plastic and vinyl, do not offer the same balance of durability and water resistance that fiberglass cement boards do, making them less suitable for the specific requirements of concrete boards in construction.