Gypsum, Drywall & Interior Panel Manufacturing worked example

Paper Facing Consumption at 61% liner feed efficiency: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop liner feed efficiency to 61%, then walk the calculation through step by step. Estimate paper liner yardage needed for a board production run based on boards to produce, liner area per board, and liner feed efficiency.

The inputs for this scenario

  • Boards to produce: 500 boards (held at the documented default)
  • Liner area per board: 0.08 sq ft / board (held at the documented default)
  • Liner feed efficiency: 61 % (the input this scenario stresses; the baseline uses 85)

Working through the calculation

  • The calculation starts from the formula this tool documents: Theoretical liner = boards to produce x liner area per board.
  • Required quantity works out to 65.57 sq ft at these inputs, and this is the headline figure for the scenario.
  • Theoretical amount works out to 40 sq ft at these inputs.
  • Loss allowance works out to 25.57 sq ft at these inputs.
  • Efficiency works out to 61 % at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where liner feed efficiency sits at 85% and the headline result is 47.06 sq ft, this scenario comes in 39.34% above the baseline at 65.57 sq ft.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to liner feed efficiency, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It treats facing as a single liner figure; if face and back papers differ in width or weight, run them separately.

Results at a glance

  • Required quantity: 65.57 sq ft (headline result)
  • Theoretical amount: 40 sq ft
  • Loss allowance: 25.57 sq ft
  • Efficiency: 61 %

Run it with your numbers

  • To rerun this with your own numbers, open the live Paper Facing Consumption calculator, set liner feed efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.