Drip Edge Calculator

Linear feet of drip edge for eaves and rakes.

DRIP EDGE NEEDED
LF
eaves and rakes

Usage Tip

Install drip edge at eaves BEFORE underlayment, and at rakes AFTER underlayment.

THE MATH
LF = (Eave + Rake) × (1 + waste)
Where: drip edge runs along eaves and rakes
• Standard pieces are 10 ft long
• Eaves before underlayment, rakes after
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The calculators and tools on Formula Factory are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. Formula Factory makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.