[DangeloInspections]

It is most likely a caulking problem typically found from inadequate sealing of either a vertical mullion between two windows, (as in a double window) or across a horizontal mullion between the two single hung windows and the fixed eyebrow window above it. This type of window is typically found in the front guest bedroom on many of the designer homes.

It is a very common problem. A careful examination of the caulking around and in between the windows and re-caulking where the water is getting in should solve the problem. Sometimes the mullion covers are not installed and caulked tightly, resulting in moisture intrusion.

You want to dry out the drywall quickly so mold does not develop. One must make sure they have solved the leaking problem before any drywall repair or you will be repairing the drywall more than one time.

In severe cases a portion of drywall needs to be removed and replaced. If it has not been a long standing problem drying it out quickly and slight stain sealing and repainting may be all that is needed.

I saw one of these situations very recently. The drywall just under the window did show some damage, but both a moisture meter and a thermal imaging camera showed no higher moisture levels, so it seemed to dry out. In this case, a receptacle was near this area, and the cover plate was able to be removed and a Q- tip was inserted OUTSIDE the single gang receptacle box and the Q tip remained dry....so more invasive measures involving new drywall, etc was not needed.

Hope this helps! Frank D.