Could the roof have cooked itself in 8 years like that.
Nails in my attic are dripping wet.
I have a roof that is 10 years old gaf timberline 25.
If you have a friend in the attic ask him to direct you to a sturdy spot where the nail can bite into the wood.
These same condensation points the roofing nails will often map exactly the drip stains found on the attic insulation or attic floor below each nail.
All of this is one half of your problem.
A point often overlooked is that since it s winter the water freezes on the cold nails.
If the women don t find you handsome they should at least find you handy.
Not sure if that has anything to do with it.
In your case a attic access hatch or doorway is leaking badly allowing quantities of water laden air to come in contact with your roofing nails.
There may be no vapor barrier in your ceilings allowing the water vapor to pass into the attic.
Also my wife had the roof done before we married.
The air in the attic has water in it and it condenses on the cold metal.
The best solution for controlling moisture is at its source.
Hammer a new nail into the roof about 1 inch above the hole from the previous nail.
The nail chisel tips are rusted.
I noticed that they installed 4 roof vents but did not cut them out.
If the problem is the result of water or moisture penetrating the foundation or floor slab there are many remedial actions which may help.
Excessive attic moisture condenses on the cool metal surface of the roofing nails causing corrosion or rust on the nails and stains on the surrounding wood materials.
A moist attic means moist insulation and moist insulation is less effective.
Not sure there is much you can do about it other than maybe spray the tips of the nails with some rubber coating to insulate it from direct cold wet air contact.