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Newly installed architectural shingles show a angled line from top to bottom every 3-4 feet. Is this normal?

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    A picture would help. – Lee Sam Oct 18 at 19:56
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    Shingles are installed in an angling, stepped pattern, but it's not clear what the problem is in your case. Please describe it better or post photos using the editor toolbar. – isherwood Oct 18 at 19:59
  • Generally those lines are “guidelines “ and are used to keep the shingles straight and true. What kind of line is it? – Lee Sam Oct 18 at 19:59
  • Hello, and welcome to Home Improvement. We'll need more info (e.g. a picture) before we can really help you. And, you should probably take our tour so you'll know how best to participate here. – Daniel Griscom Oct 19 at 0:10
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    Sometimes roofers put down chalk lines to make sure the shingles are lining up. This will be gone the first time it rains. But a picture of what you are referring to would be helpful. – JRaef Oct 19 at 0:14

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