Double-sided film coating of roof tiles has multiple advantages. First, double-sided film coating can provide stronger waterproof performance, effectively prevent water penetration, and extend the service life of roof tiles. Secondly, the coating can enhance the weather resistance of tiles, resist the erosion of ultraviolet rays, wind and rain, and temperature changes, and maintain the color and physical properties of tiles. Double-sided film coating also has anti-fouling function, reduces the accumulation of dust and dirt, and reduces maintenance costs. In addition, the coating layer can increase the wear resistance of tiles and improve their impact resistance, so that they can still maintain good appearance and functionality in harsh environments.