These techniques allow us to offer a wide variety of standard and specialty colors. Custom colors can also be produced. Ceramic coating are durable and will not fade. High gloss glazed coatings will actually increase the moisture and mildew resistance of the tile. Read article about MCA Glazed Tiles.
Black core can indicate structural weakness in roofing tile.
Some manufacturers may try to persuade you that their black core is some sort of indication of a super strength tile. ASTM C1167 Grade 1 certification is particularly important in cold climate areas and in coastal zones where sea air salt intrusion can destroy the outer surfaces of black core tiles. C1167 Grade 1 certification.