The roofers came out and said this is not a roof problem. The most likely cause is condensation behind the siding. I am being told that there is probably a void in the insulation. When the cold air outside is meting the void in the insulation from the warm house, condensation is formed. I am in the process of trying to find a company with an infrared camera. Using the camera will give me an idea of where the void is located. Once the void is located I will be able to have insulation pumped into that area. Hopefully this will correct the problem. As always I am open for suggestions.
Answers to oddballs questions:
-I don't have a humidifier
-A/C is not in the attic
-The leaking is not showing up inside anywhere including that window. It seems to now only be running down under both sides of that window.
-It is a pretty new house so I believe that the bathroom vents are all being vented correctly
-I don't believe that the roofing nails are rusty.
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