The Mediterranean standard. Clay and concrete tile roofs routinely hit 75 years in Los Angeles, and the tiles themselves often outlive the underlayment — meaning re-roofs can reuse existing tiles.
Clay — natural color, never fades, 100-year tile. Heavier.
Concrete — color-through or surface-sealed, 50–75 year. Fades over decades.
Tile adds 9–12 lbs/sqft. Homes originally built for asphalt may need engineering review before switching to tile.