HOURS ON THIS ROOF — the labor number, built from your own jobs

  YOUR TWO BASE NUMBERS (redo them every season)
    LAY    job 1 ____ / job 2 ____ / job 3 ____  install hrs per square
           (install hours ÷ squares)              middle one -> ____ hrs/sq
    STRIP  job 1 ____ / job 2 ____ / job 3 ____  tear-off hrs per square PER LAYER
           (tear-off hours ÷ squares ÷ layers)    middle one -> ____ hrs/sq/layer
    loaded cost per hour  $____

  THIS ROOF
    ____ squares x ____ lay hrs/sq                            = ____ hrs
    ____ squares x ____ strip hrs/sq/layer x ____ layers      = ____ hrs
    add hours for:  [ ] steep  [ ] 2-story  [ ] cut-up
                    [ ] long carry / tight access             + ____ hrs
                    (this goes in the sheet's EXTRA HOURS cell)
    TOTAL MAN-HOURS ____   x  $____ /hr   =  LABOR $__________

  Tell the foreman the hours before he starts. Compare to the timesheet at the debrief.