What characterizes rigid insulation board?

Rigid insulation boards are characterized by their solid structure, which provides excellent thermal resistance while maintaining form stability. They are typically made from materials such as polystyrene, polyurethane, or fiberglass—all of which allow for minimal air movement, making them highly effective insulators.

The material used in rigid insulation boards is designed to offer high compressive strength and durability. In contrast to soft foam options, rigid boards offer a sturdy and stable insulation solution that can be used in a variety of applications, including walls, roofs, and foundations.

The other options do not accurately describe rigid insulation boards. Soft foam does not provide the same level of rigidity and structural integrity. Materials like coarse wood or cane fiber do include traditional insulation types, but they do not have the same thermal performance or moisture resistance as rigid boards. Furthermore, rigid insulation boards come in various thicknesses to accommodate different construction needs. Recognizing these features is crucial for understanding the applications and benefits of rigid insulation in building practices.