The drywall is water stained directly under the two lower corners of my window. So, I need to figure out where the leak is coming from. What steps should I take?
-The home was built in 1967. The window is on the second story and gets a lot of wind and weather as it is on a gable end.
-I removed the interior trim from the window. I'd like to spray foam the window. Should I wait to determine the cause of the leak or can I go ahead as the leak's origin is invariably on the exterior?
-When I removed the trim at the top of the window I noticed that there were a lot of small bits of pine needles and detritus that had somehow worked their way in. The material appeared to be dry.
-After removing the lower window trim, I noticed that there were a speckles of mold on the drywall– very few, only a handful. But, obviously water had penetrated.
-The lower storm window sash was open for almost a year. (I just noticed that it was open). The regular lower window sash was closed. Could this be the source of the leak?
Best Answer
It turned out that the top corners of the window were rotted and water was penetrating behind it.