Even if the roof leak is caused by a windstorm or a tree.
Roof leak water move around.
Both are definitely problems but right now you have an even more urgent one because a leak near a light fixture is a serious electrical hazard.
Dormer walls provide lots of spots where water can dribble down and enter the roof.
The drip is often.
Identifying the cause.
When there is water leaking from a light fixture in the ceiling you either have a roof leak or plumbing leak that needs to be fixed as soon as possible.
A roof leak is always a cause for concern.
Caulk can be old cracked or even missing between the corner boards and between window edges and siding.
Recaulk the corner flashing if any areas have hardened caulk.
Water doesn t always come in at the shingled surface.
Dig out any cracked or dry caulking that isn t properly sealing adjoining surfaces and replace with silicone caulk.
Often wind driven rain comes in from above the roof especially around windows between corner boards and siding and through cracks and knotholes in siding.
Move the light up the roof and away from any drips to find where the water enters the attic at the dormer.
The water damage from a roof leak can extend well past the location of the leak.
Replace any missing or rotted siding above the step flashing on dormers.