Roof insulation plays a crucial role in maintaining comfortable indoor temperatures, reducing energy consumption, and enhancing the lifespan of roofing materials. In this article, we will explore the benefits, types, and best practices for roof heat insulation. Roofs are the primary source of heat gain in buildings, especially in regions with hot climates. When exposed to direct sunlight, roofs can absorb and transfer significant heat into the building, leading to discomfort and increased air conditioning costs. There are various materials and techniques available for roof heat insulation, each with its advantages. Reflective insulation, also known as radiant barriers, consists of materials that reflect heat rather than absorbing it. Typically made of aluminum foil, these barriers are installed under the roof to deflect sunlight and reduce heat penetration. Fiberglass insulation consists of fine glass fibers woven together. It is one of the most commonly used insulation materials due to its affordability, effectiveness, and ease of installation. Available in batts, rolls, or loose-fill forms, fiberglass insulation provides excellent thermal resistance.