RHEINZINK-prePATINA - This line consists of prePATINA blue-grey and prePATINA graphite-grey surfaces will patinate as nature intended when exposed to wetting and drying cycles. Over time, the blue-grey patina when exposed to atmospheric influences while the pre-weathered materials prePATINA blue-grey and prePATINA graphite-grey will continue to age over time in response to microclimatic conditions. These natural patinas may appear lighter when used in locations where the air contains chlorides.