This area is missing a shingle due to delamination. Delamination is the process in which one shingle comes apart and breaks into 2 pieces. The top section and the bottom section
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More delamination
More areas of delamination this is due to the high nailed nails. Here are a few pictures of the nails being too high
Rusting nails are also signs of water under the shingles, and this is due to the missing shingle just above this area.
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3
Holes in ridge cap
The small holes in the ridge cap are due to the crack in the ridge cap shingles.