Read here for everything you need to know about the advantages and disadvantages of terra cotta roofs, and also, roofing alternatives.
Lead coated copper roof - Home Blinkx
Slate vs. Terra Cotta Roof
3 Types of Tile Roofs and the Pros & Cons of Each in Arizona
Clay Roof Tiles vs Concrete, or Something Better?
Terracotta Roof Pros & Cons and a Better Alternative
7 Pros And Cons Of Tile Roofs
Clay vs Concrete Roof Tiles - Bison Roofing
Choosing Roof Tiles: Slate, Concrete or Clay? - Better HouseKeeper
Terracotta Roof Pros & Cons and a Better Alternative