First and Last Plank Width: Balance the Edge Rows

Usable width = room width − 2 × expansion gap. Divide by actual plank face width and round up to a whole row count. If more than one row is needed, balanced edge width = [usable width − (rows − 2) × plank width] / 2. A one-row field uses the entire usable width.

For an explicit 100 in room width, 6 in planks and 0.25 in gap at each side, usable width is 99.5 in. Rows = ceil(99.5 / 6) = 17. Balanced edges = (99.5 − 15 × 6) / 2 = 4.75 in each.

A balanced value can still be narrower than a specified minimum. Change direction or product geometry, or resolve a different permitted layout; do not hide the violation by increasing waste. The tool reports a warning when the entered minimum is not met.

Use actual face width and the correct measurement plane. Walls that are not parallel can change the cut along a row. The simple rectangular model cannot replace scribing from a surveyed room shape.

Balanced side widths solve one axis only. Along the room, starter cuts, full planks and final end pieces must satisfy product instructions. The schedule checks adjacent-row stagger after short-end adjustments, because correcting one end cut can create a new joint problem. Keep this row plan separate from carton purchasing; installed pieces are not an optimized stock-cutting order.