Spearheaded by the Tile Council of North America
(TCNA), Green Squared is the result of industry consensus and formalized as ANSI A138.
However, the Tile Council of North America
(TCNA) states that friction of tile floor surfaces will change over time and they should be checked periodically to verify they're still functioning as designed.
The technical considerations involved the substrate, the quantity, quality and placement of tile cuts, the finished edges and overall craftsmanship as it relates to industry standards set by the Tile Council of North America
(TCNA) and the American National Standards Institute (ANSI).
Gerald Zakim, President of GZA, has been appointed to a team of independent experts created by the Tile Council of North America
and the National Tile Contractors Association.