Terracotta tiles are formed from blends of natural clays and shales which are kiln fired to lock in their colour and ensure ultimate durability.Terracotta is a clay-based unglazed ceramic although the term can also be applied to glazed ceramics where the fired body is porous and red in color. The term is also used to refer to items made out of this material and to its natural, brownish orange color, which varies considerably.
Terracotta roof tiles come in either flat or shaped styles (with variations within these), are available in gloss, matte or natural finishes, and are glazed in dark or light tones. Colours range from the palest ivory to deep reds and blackish hues.
Terracotta roof tiles differ in size and shape. These tiles interlock at the head and sides and can be laid out in either straight- or cross-bond (overlapping) styles. When choosing roof tiles, it's important to factor in your environment. For instance, in coastal areas, salt in the air tends to erode terracotta roof tiles faster than concrete ones.