Heat insulation boards are rigid panels designed to reduce heat transfer, thereby enhancing energy efficiency in buildings. Common types include Polyisocyanurate (PIR), Extruded Polystyrene (XPS), and Expanded Polystyrene (EPS), each offering varying levels of thermal resistance and moisture resistance. These boards are widely used in walls, roofs, and floors, especially in areas requiring high thermal performance with limited space. They are lightweight, easy to install, and contribute to reduced heating and cooling costs.