Floor Flatness Ff Workmanship
Floor Flatness (FF) and Workmanship (Tile)
Floor Detective® Claims and Conditions Guide
Summary
Floor flatness describes the degree of surface variation present within a substrate intended to receive tile or stone flooring. Because tile assemblies are rigid and do not readily conform to abrupt substrate irregularities, substrate flatness strongly influences tile support, mortar coverage, lippage visibility, and overall installation appearance. Flatness conditions originate primarily from substrate preparation and concrete finishing practices rather than from the tile material itself. Large-format tile installations are especially sensitive to substrate variation due to increased tile length and reduced ability to accommodate abrupt elevation change. Proper evaluation requires correlation of substrate surface profile, tile geometry, installation methods, and observed performance conditions before conclusions are formed. See also Lippage, Workmanship Troweling Techniques, and Tile and Stone Floor Problems for broader context.
Wet Tile Slip Resistance and Surface Traction
Tile and Stone Floor Problems
Tile Surface Cleaning and Residue Conditions (Overview)
Surface Chipping (Ceramic Tile)
Grout Haze (Tile)
Cracked Corners
Outdoor Natural Stone Deterioration (Exterior Stone)
Grout – Pin Holes
Saltillo Tile Lime Pops
Travertine Tile Properties
