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Drip edge calculator

Find how many pieces of drip edge your roof’s edges need.

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Drip edge protects your roof’s edges and directs water into the gutter. Enter the total length of your eaves and rakes to see how many 10.5-ft pieces to buy.

Drip edge pieces needed
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Add extra for overlap at each joint and for corners.

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How much drip edge to buy

Drip edge comes in 10.5-ft pieces that overlap a couple of inches at each joint. Measure the total length of your eaves (bottom edges) and rakes (sloped edges), then divide by ~10 to allow for overlap. Code requires drip edge on most new roofs. Installed cost runs about $2–$4 per foot.

Cost ranges reflect 2026 U.S. installed prices (BLS producer/labor data, Remodeling Cost vs. Value, and manufacturer pricing). Your real price depends on your roof, region, and pro — see the full cost guide.

FAQ

Drip Edge Calculator questions

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Divide your total edge length by about 10 ft to allow for overlap. A 160-ft perimeter needs roughly 16 pieces of standard 10.5-ft drip edge.
On most new asphalt-shingle roofs, yes — the building code requires drip edge at eaves and rakes. It’s inexpensive and prevents rot and fascia damage.
Eave drip edge (the bottom edges) goes under the underlayment to steer water into the gutter; rake drip edge (the sloped sides) goes over it. Profiles like Type C and Type D differ in size.
About $2–$4 per linear foot installed, or roughly $300–$700 for a typical home — usually folded into a full roof-replacement quote.

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