Gauged porcelain thickness bands, not the word thin
A 5 April 2017 Tile Council release announced two standards: ANSI A137.3, specifications for gauged porcelain tiles and gauged porcelain tile panels or slabs, and ANSI A108.19, interior installation of those products by the thin-bed method with modified dry-set cement mortar or improved modified dry-set cement mortar. Gauged porcelain in that release is not defined by the word thin. The thicknesses are two bands: 3.5 to 4.9 mm for walls, and 5.0 to 6.5 mm for floors and walls.
Why the release says gauged
People were calling the products thin tile. The standards use gauged, the release says, because the thicknesses are precise bands that carry different loads, in the same spirit as wire gauges. One class is for walls, from 3.5 to 4.9 mm. The other is for floors and walls, from 5.0 to 6.5 mm.
Which document does which job
A137.3 sets minimum properties of the product. A108.19 sets the interior thin-bed method with those named mortars. The release does not treat the nickname thin as the specification.
Source
Fetched 2026-10-11 from Tile Council gauged porcelain standards release. The sentences above follow that page. They are not a contractor promise.
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