Many times consumers express concern about their commercial carpet tile because of fraying along the edge. This issue generally appears in the high traffic areas first and usually within a couple months of installation.
I had a job like that today in a restaurant and micro brewery in central Wisconsin. The carpet in the traffic areas and under the tables was fraying along the length of manufacture, perpendicular to the yarn rows. The affected tiles were sheared using a pneumatic carpet carver after the correction the frayed appearance was completely corrected.
Yarn fray on commercial carpet tiles is not considered a manufacturing defect and is routinely corrected with shearing.