Roof, inside my attic the nail come through the roof boards. The nail hold condensation on them? What can I do? Or what should have be done?

What can I do? Or what should have be done?
My wash appliance will not start on the...
Answers:    The heat from inside the living space of the home is escaping from deficit of insulation, and causing the cold iron nail to get condensation on them. Have some more insulation blown within, and that should solve the problem, in assimilation to saving you some on your heat bills.
Good Luck. ;-)
Central nouns sound out?
Nothing, this is common and not a problem.