Like nothing else available in North America, the MRN porcelain diamonds offer dense, colored glass fused to steel. This combination of fade-free, durable and impervious glass melted onto a strong, steel substrate combines beauty and durability like few roofing options anywhere. The thickness of the finish is ten times that of a coat of paint, so the porcelain colors have a quality and depth that can’t be replicated with any other metal material.