Composites, Fiberglass & Advanced Materials calculator
Composite Layup Labor Calculator
Estimate hand layup labor from the ply area to lay and a measured placement pace, then add a handling and inspection allowance. The page states the margin or the overage against the hours your schedule allows.
What this calculator does
- Hand layup labor hours from ply area and pace, plus the margin against a target the schedule sets.
Formula used
- Base layup labor = total ply-area ÷ placement pace
- Estimated layup labor = base labor × (1 + handling allowance ÷ 100)
- Allowance hours = estimated layup labor − base layup labor
- Margin to target = target layup hours − estimated layup labor
Inputs explained
- Total Ply-Area to Lay: Laminate area times ply count, from the layup plan.
- Hand Layup Placement Pace: Measured ply-sq ft per hour per laminator, from a time study.
- Handling and Inspection Allowance: Percentage from your time study covering handling and inspection.
- Target Layup Hours: Hours the schedule allows for layup, from the build plan.
How to use the result
- Best suited to quoting a hand layup kit, checking a layup against a shift target, comparing prepreg and wet layup labor.
- Cure, debulk and bagging time are separate; this page times placement and its allowance only. A second laminator halves elapsed time, not the labor hours this page estimates.
Current U.S. benchmarks
- The producer price index for plastic resins and materials stands at 280.569 (BLS, Aug 2026), up 6.6% from a year earlier. Quotes priced off last quarter's material cost miss this move.
- Steel mill PPI stands at 381.162 (BLS, Aug 2026), up 23.4% from a year earlier. New factory orders are up 8.5% year over year (Census).
Common questions
- What is ply-area and why not panel area? Each ply counts separately over the laminate area, so a 10 ply skin of 42 sq ft is 420 ply-sq ft. Panel area would understate the work about tenfold and hide the placement hours.
- What belongs in the handling and inspection allowance? Kitting and ply pickup, handling between stations, in-process inspection and paperwork. A time study that follows the kit from cutting to vacuum bag sets the percentage. The 18 percent default is a starting point, not a standard.
- How do I pick the placement pace? Time several plies on the actual laminate and divide ply-sq ft by hours. Wet layup often runs slower than prepreg because each ply is wetted out. Use your measured pace, because catalog figures rarely match shop conditions.
- Why does the tool compare with a target? A labor estimate only matters against the hours the build plan allows. The margin shows slack; an overage shows how many hours to recover through a second laminator, faster kitting, or less handling.
Related guides
Last reviewed 2026-10-01.