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Clay fundamentals

Terracotta, ceramic and clay: what the names mean

Separate material descriptions from profile names and finish labels when comparing clay roofing products.

Start with the material

Clay roof tile is a fired ceramic building product. Terracotta commonly describes fired clay with an earthy appearance, but the word alone does not identify a particular roof tile, performance grade or attachment method. Concrete roof tile uses a different manufacturing process. Both materials can appear in curved and flat profiles, so a photograph or color name is not enough to establish what is on a roof.

Then identify the shape and surface

Spanish, Mission, French and flat tile describe families of shapes or traditions, with individual manufacturers using their own product names. A glaze is a surface finish, not a separate roof structure. A color blend describes the combination of tones selected for a roof. Write these attributes separately so a supplier can identify the intended material rather than substitute a visual approximation.

Build an identification record

Record any readable underside marks, dimensions, edge configuration, profile and surface appearance from a tile already removed by a qualified roofer. Keep photographs with a scale and the roof location. Do not climb a roof to obtain a sample. When the original product remains uncertain, describe it as unidentified clay tile until a reliable comparison supports a more precise name.

Further reading & technical sources

Consult the current product documentation and local requirements for your project. These introductions are not installation specifications.

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Tile Roofing USA editorial guide · Published October 28, 2026.