Picture below is of an exterior wall where it connects to the ceiling (ceiling is acoustical texture; wall is flat). Water strip about 2.5 inches wide runs the whole length of the ceiling after it rains, right under the roof line and gutters.
Called the gutter guys; they said the overhang of the roof is directly over the gutter so the water should be flowing into the gutter (see drawing below). Checked the attic and didn't see any water. But somehow the water is getting out. Their next step is to put a piece of flat metal under the roof over the gutter to be sure the water can't get closer to the house.
I think it's got to be something with the gutter but can't figure it out. Am I missing something?