Construction Products, Windows, Doors & Fenestration worked example

Siding Extrusion Capacity at 62% siding extrusion uptime: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop siding extrusion uptime to 62%, then walk the calculation through step by step. Estimate good siding extrusion capacity from panel output per cycle, planned cycles, uptime, and yield.

The inputs for this scenario

  • Siding extrusion output per cycle: 360 linear ft / cycle (held at the documented default)
  • Planned siding extrusion cycles: 24 cycles (held at the documented default)
  • Siding extrusion uptime: 62 % (the input this scenario stresses; the baseline uses 86)
  • Siding first-pass yield: 95 % (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Gross siding extrusion capacity = siding extrusion output per cycle × planned siding extrusion cycles.
  • good siding extrusion capacity works out to 5,089 linear ft at these inputs, and this is the headline figure for the scenario.
  • gross siding extrusion capacity works out to 8,640 linear ft at these inputs.
  • siding extrusion lost to downtime works out to 3,283 linear ft at these inputs.
  • siding extrusion lost to defects works out to 268 linear ft at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where siding extrusion uptime sits at 86% and the headline result is 7,059 linear ft, this scenario comes in 27.91% below the baseline at 5,089 linear ft.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to siding extrusion uptime, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes a stable die and consistent melt; startup scrap and color-change purge can spike yield losses beyond the steady-state percentage you enter.

Results at a glance

  • good siding extrusion capacity: 5,089 linear ft (headline result)
  • gross siding extrusion capacity: 8,640 linear ft
  • siding extrusion lost to downtime: 3,283 linear ft
  • siding extrusion lost to defects: 268 linear ft

Run it with your numbers

  • To rerun this with your own numbers, open the live Siding Extrusion Capacity calculator, set siding extrusion uptime to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.