Roof Drip Edge Calculator
Estimate roof drip-edge pieces and material cost from eave length, rake length, stock length, lap allowance and waste.
Default project preview
19 pieces
Total roof-edge run
160 ft
Effective piece length
9.83 ft
Base piece count
17
Purchased length
190 ft
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Total run = eave length + rake length. Effective piece length = stock length − overlap. Base pieces = total run ÷ effective length, rounded up. Waste is added before the final whole-piece order.
FAQ
Roof Drip Edge Calculator questions
Why subtract overlap from each piece?+
Adjacent pieces share a lap, so each additional stock piece contributes slightly less than its full length to the finished run.
Are eave and rake profiles always the same?+
Not always. Some projects use different profiles or details. Split the estimate when stock length or price differs.
Does this include flashing around walls and chimneys?+
No. It estimates roof-edge metal only, not step flashing, counterflashing or valley metal.