The air in the attic has water in it and it condenses on the cold metal.
Frozen condensation in attic.
Well just like any drain line the water should exit the drain and there should be no concern about freezing.
The same thing may be happening on the inside of your attic.
Recognize the signs of stress when too much snow and ice has accumulated on your roof or when you have too much condensation in your attic.
Traces where water has trickled down the walls.
A point often overlooked is that since it s winter the water freezes on the cold nails.
The warm moist air trapped inside of your home is coming into contact with the cold wooden surfaces in your attic forming large damaging water droplets.
A tool like this shoots nails through shingles.
Sagging ridgeline drooping ceilings water leaks on interior walls and ceilings jammed doors cracked interior walls near the center of your home creaking sounds.
Noticeable musky damp odor.
Moisture forming on the glass window panes or other flat surfaces.
Signs of condensation in the attic may include the following.
This is why you see the frost.