The source of the window leakage could only be revealed when you remove the dry wall.
From there, you can seal and leakage, spray on some mold killer then mold blocker.
Place fresh dry wall to patch the hole then paint.
The source of the window leakage could only be revealed when you remove the dry wall.
From there, you can seal and leakage, spray on some mold killer then mold blocker.
Place fresh dry wall to patch the hole then paint.