Starter Strip and Ridge Cap on a Roof Claim: What to Check

Starter strip is the first course along the edge of the roof. Ridge cap covers the ridges and hips. Both are measured in linear feet, not square feet, and both are easy to undercount if the estimate relies on roof area. A contractor can compare their own linear measurements to the estimate and document any gap.

Disclosure: we make Supplement Snap, which helps roofing crews document damage found at tear-off and export a report. It does not decide coverage, negotiate claims or guarantee approval. This page is general guidance, not legal or claims advice.

Area-based measurements do not show ridge and edge lengths directly. Reports built from aerial images can be off on a complicated roof. The table covers what to measure so the numbers come from the roof, not a guess.

For starter, add the eave lengths and the rake lengths if you install starter there. For ridge cap, add the ridge and hip lengths. Write each length and the sum. Walk the roof or use a reliable tool, and note which.

Photograph each ridge and hip, showing its full length where you can. Photograph the eaves. Number the photos and tie them to the measurements in your list.

Find the starter and ridge lines in the carrier's estimate and note the quantities and units. If they differ from yours, write the two numbers side by side with your measurements. Do not assume the difference is an error. It might be a different product or waste factor.

Example: Ridge cap, 118 linear feet measured on roof, estimate shows 96. Photos 22 to 27. Starter, 168 linear feet, estimate shows 140. Photos 3 to 9.

Ask for the difference, show the work, and let the adjuster respond to each line.

A gable roof has two eaves of 40 feet and two rakes of 28 feet, with one ridge of 40 feet. The contractor installs starter along the eaves and rakes, so the starter quantity is 40 + 40 + 28 + 28 = 136 linear feet. Ridge cap is 40 linear feet.

The carrier's estimate lists 80 linear feet of starter and 30 linear feet of ridge. The request lists each difference as its own finding: starter, 136 measured against 80 in the estimate; ridge, 40 measured against 30. The photos show the full run of each edge and the ridge, with a tape reading at one end. Those numbers are illustrative, not typical.

Starter and ridge cap products come in bundles with set coverage. Some contractors use a dedicated starter product and others cut shingles to make starter, which changes the amount of material needed. Write down what you actually use. If the carrier's estimate assumes a different method, name the difference without arguing it.

Hips take ridge cap, and some valleys take different material depending on the style. Count hips with the ridge when the same product is used, and write the lengths separately so the arithmetic is visible: Ridge 40 ft, Hip A 22 ft, Hip B 22 ft, total 84 ft.

Estimates may name specific products or generic items. Read the line description. A line that says starter course or ridge cap is not the same as one that says shingle waste only. If the estimate's description does not match what is being installed, quote it back in your note so the reviewer can see what you compared.