Roofing, Siding & Exterior Building Products worked example

Packaging Length Optimization at 98% wrapping line application efficiency: a worked example

This scenario runs the packaging length optimization calculation on the strong side: 98% wrapping line application efficiency, with every other input held at its documented default. Use it when packaging length optimization in roofing, siding and exterior building products needs a buy quantity for the next roofing, siding and exterior building products run and you do not want to short the line.

The inputs for this scenario

  • Panels or accessories being packaged: 500 units (unchanged)
  • Packaging film/wrap per panel: 0.08 units / unit (unchanged)
  • Wrapping line application efficiency: 98 % (raised for this scenario; the documented default is 85)

Working through the calculation

  • Applying the documented formula (Theoretical packaging length optimization amount = packaging length optimization area or quantity × packaging length optimization use per unit) to the inputs above produces each figure below.
  • At this operating point the engine returns 40.82 units for required packaging length optimization quantity, the number this scenario is built around.
  • At this operating point the engine returns 40 units for theoretical packaging length optimization amount.
  • At this operating point the engine returns 0.82 units for packaging length optimization loss allowance.
  • At this operating point the engine returns 98 % for application efficiency.

How this compares with the baseline

  • Against the tool's baseline example, where wrapping line application efficiency sits at 85% and the headline result is 47.06 units, this scenario comes in 13.27% below the baseline at 40.82 units.
  • Use it when planning a packaging run or ordering stretch film, edge protectors, or bundling material for a batch of roofing or siding product. Treat this as a target state: the delta against the baseline quantifies what the improvement is worth before you commit to chasing it.

Results at a glance

  • Required packaging length optimization quantity: 40.82 units (headline result)
  • Theoretical packaging length optimization amount: 40 units
  • Packaging length optimization loss allowance: 0.82 units
  • Application efficiency: 98 %

Run it with your numbers

  • Every input above is editable in the live Packaging Length Optimization calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.