Divots and bumps in shingle lines
Your roof is built to be as square and level as possible. If during your inspection you come across divots, bumps or a deviation in lines of shingles, you may have a problem.Use caution as you move over and around these areas during your inspection as they can be evidence of a failing roof. Divots could be any number of things, from a compromised roofing material to a misplaced beam.
If you find bumps in your roof in a certain area, you may have something as simple as an extra set of shingles or something as complicated as a board buckling and springing upward. You can easily peel back some of the shingles to see what the issue is.
Deviations in shingle lines can be the result of a roof that has shifted, either because of structural issues or weather. Determining which can be done by inspecting the underside of your roof – if there is water damage on the wood underneath, it’s a good bet that weather is causing some deviation.