The quality of resin roofing tiles depends on the manufacturing process, particularly the raw material ratios and calendering temperature. Neglecting formulation and molding details—such as shortening the mixing time or failing to maintain proper temperature control—can lead to premature peeling, fading, or yellowing of the tiles. Precise control of the proportions of raw materials—such as ASA resin and PVC pellets—as well as the calendering temperature (130–150°C) is crucial for ensuring product quality and service life.
