High Rows and Low Rows
High Rows / Low Rows (Carpet)
Floor Detective® Claims and Conditions Guide
Summary
High rows and low rows are manufacturing-origin appearance conditions that occur when one or more tuft rows are produced at a different pile height than adjacent rows during tufting or finishing. Variations in yarn tension, needle position, stroke height, or shearing consistency may create uneven pile elevation aligned in the machine direction. The condition commonly appears as raised or recessed linear rows visible under directional lighting and may become more pronounced as yarn bloom develops over time. High and low rows affect visual uniformity only and do not independently reduce tuft bind, backing integrity, durability, or functional performance. The condition may resemble other manufacturing-related row irregularities, but is distinguished by distinct elevation change within specific tuft rows rather than generalized striping or surface damage. See also J-Cut Rows, Top Cuts, and Carpet Problems for broader context.
Carpet Problems
Carpet Fiber Identification (Field and Laboratory Methods)
Wool and Wool Carpet Properties
Carpet Beetle Damage
Fiber Properties
Missing Row
Wrinkles in Backing
Unraveling / Runs (Carpet)
Core Crush / Roll-Core Pile Reversal (Carpet)
