Is it a double pane window that fogs up? If so the water could be coming through the glass which means you just have to replace the glass unit, not the whole window from it leaking somewhere. Most time a window is "leaking" it's a seal failed window drawing moisture into your home.
GrandMaster001 t1_itufru7 wrote
Reply to Leaking window, mold in drywall behind peeled paint by Christineblankie
Is it a double pane window that fogs up? If so the water could be coming through the glass which means you just have to replace the glass unit, not the whole window from it leaking somewhere. Most time a window is "leaking" it's a seal failed window drawing moisture into your home.