Kiln Release Marks
Kiln Release Marks (Tile)
Floor Detective® Claims and Conditions Guide
Summary
Kiln release marks are a surface appearance condition observed on some kiln-fired tile products in which a faint grid, pattern, or mottled residue becomes visible on the tile face. The pattern often corresponds to the geometry of the tile backing or packaging contact surfaces. The condition is most commonly observed on porcelain tile and is associated with manufacturing, firing, packaging, storage, or shipping processes rather than installation activity. Visibility may vary depending on lighting angle, tile finish, and
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