Hello, I am currently repainting my bedroom, and I was surprised to see the Zinsser Bin peeling off from the lower corner of the window frame. I applied a second coat but same thing. Grey-ish spots also appeared thru. I then decided to investigate further and touching the corner it felt humid. I decided to drill a small hole but past the first 32nd of an inch, it was much softer, not quite like mush but softer than the surrounding wood. Not long after I decided to open the corner (not sure if this was a good idea) and the wood I puled from the hole was wet! There is water infiltration somewhere but where?? My uncle just went through a nightmare with mold growth in his basement, and as a result, he had half of the house stripped down and rebuilt. He had $70k of damage. Im extremely concerned and I know nothing about the way windows are built and installed. Can the whole wall be in need of stripping down???? Anynbody with opinions are more than welcome to share... Im very anxious to see what people here think... Thanks! EDIT: please note that I tore apart the wood, thats why you see chips and chunks laying around like that.