How many 3 tab shingles needed for starter and ridge shingles 72 feet?

For a roofing project using 3-tab shingles, the starter course typically requires about 1 bundle of shingles for every 30 linear feet. For 72 feet, you would need approximately 2.5 bundles for the starter course. Ridge shingles are generally installed at a rate of 1 bundle per 20 linear feet, so for 72 feet of ridge, you would need about 3.6 bundles. Therefore, you would need a total of about 6 bundles for both the starter and ridge shingles combined.