Atroofsphere is an innovative reflective roofing material developed by combining recycled plastic waste with finely ground eggshells and chicken bones. Recycled HDPE serves as the main matrix due to its lightweight yet high-strength properties. Eggshells, which are rich in calcium carbonate (CaCO₃), and chicken bones, which contain hydroxyapatite, function as natural fillers, thus enhancing the mechanical strength and durability of the roof.