Rain curtain fountain materials dictate durability, visual appeal, and maintenance requirements, with choices spanning metals, polymers, and natural stones. Stainless steel (304/316) is popular for its corrosion resistance and modern look, available in brushed, mirror, or bead blasted finishes. Copper and bronze offer timeless elegance, developing patinas over time, while weathering steel (Corten) creates rustic, industrial aesthetics. Glass reinforced concrete (GRC) allows complex shapes with texture options (smooth, pebbled), and natural stones (marble, granite) provide luxury finishes—though requiring sealed surfaces to prevent water staining. Polycarbonate and acrylic offer transparency for light effects, with impact resistance 250x that of glass. Engineered polymers (PVC, HDPE) suit budget projects, resisting chemicals and UV degradation. Material selection depends on environment (indoor/outdoor), design intent (modern/traditional), and maintenance capacity—with suppliers often recommending combinations (stainless steel framework + glass panels) for optimal performance.