Methodology
How Labor Costs Are Estimated
Crew production rates, pitch and access penalties, and seasonal demand.
Labor is typically 40 to 60 percent of a residential roofing invoice. We model it from crew production rates rather than as a flat percentage of material, because the conditions that slow a crew down are the same conditions homeowners can describe accurately.
Production rates, not guesswork
A standard three to five person crew installs a predictable number of squares per day on a walkable roof. Tear-off consumes its own portion of the day. We estimate crew-days from squares, then price crew-days using regional wage data plus burden — insurance, workers' compensation, payroll taxes, and vehicle cost.
What slows a crew down
Steep pitch requires roof jacks, staging, and harness work. Multi-story work adds hoisting and ground handling. Complex roofs with many valleys, dormers, skylights, and chimneys need far more cutting and flashing per square than a plain gable.
- 6:12 and steeper: staging and fall protection time
- Two or more stories: material hoisting and ground control
- Cut-up roofs: detail flashing dominates the schedule
- Restricted access: longer carry distances for material and debris
Seasonal demand
Labor prices move with demand. Late spring through early fall is peak season in most of the country, and after a widespread hail or wind event local crews can be booked for months, which pushes bids up. Off-season scheduling is one of the few reliable ways to reduce labor cost.
Safety compliance is part of the price
Fall protection, trained crews, and proper insurance carry real cost. A bid that is far below the range usually reflects an uninsured or unpermitted crew rather than a better operation, and that risk transfers to the homeowner.
References
Calculators that use this
For estimation purposes only. Reviewed by the RoofingCalculatorUSA Editorial Team. See our editorial policy and data sources.