CSLB C-39 Roofing ContractorEstimating and PlanningMedium
Starter strip shingle bundles each cover 105 linear feet. The eaves and rakes requiring starter strip total 340 linear feet. Applying a 5% waste allowance, how many bundles are required?
- A6 bundles
- B3 bundles
- C4 bundles
- D5 bundles
Show answer & explanationAnswer & explanation
Correct answer: C. 4 bundles
340 ft × 1.05 waste factor = 357 linear feet needed. 357 ÷ 105 ft/bundle = 3.4, which rounds up to 4 bundles.
Why the other options are wrong
- A. Significantly over-orders material.
- B. Ignores waste allowance, leaving material short.
- D. Overstates need beyond the calculated requirement.
Starter Strip Takeoff
Starter strip material is calculated by linear footage of eaves and rakes, adjusted for waste, then divided by bundle coverage.
- Measure total eave and rake linear footage
- Apply a small waste factor (typically 5%)
- Divide adjusted footage by bundle coverage and round up
Memory trick: Edges need extra — add five percent before dividing.