For example soak the downhill side of a chimney first then each side then the top on both sides.
Roof leaking bottom window.
Start low soaking the area just above where the leak appears in the house.
Window leaks can result from a structural failing elsewhere in the home such as an opening in the roof upper floors or siding.
You can try some simple maintenance work such as.
Replace any missing or rotted siding above the step flashing on dormers.
Have a roofing expert conduct an inspection of your roof system.
Recaulk the corner flashing if any areas have hardened caulk.
If you notice water stains on the wall above the window or along the top or bottom of the frame this usually means there is a leak inside the walls.
Remove damaged exterior caulking clean the window frame and recaulk.
Missing shingles or a failing roof system might be your culprit.
Re seal the glass to the gasket with clear silicone caulk.
If a leak is difficult to find enlist a helper and go up on the roof with a garden hose.
Isolate areas when you run the hose.
Check the gasket between the window frame and the glass.
Unfortunately this may not be the case for water leaking from the bottom.
The problem is often with the window itself instead of anything that you might be able to do to prevent water from coming in.
Dig out any cracked or dry caulking that isn t properly sealing adjoining surfaces and replace with silicone caulk.