Glossary of Industry Terms

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Underglaze decoration

See Decoration, underglaze.

Unglazed paver tile

See Pavers.

Unglazed quarry tile

Sec Quarry tile.

Unglazed tile

A hard, dense tile of homogeneous composition throughout, deriving color and texture from the materials of which the body is made. The colors and characteristics of the tile are determined by the materials used in the body, the method of manufacture, and the thermal treatment. (ASTM C 242)