"Gntry" wrote in message
news:HQwzf.2167$pq5.1585@trndny02...

I live in western NY and the weather here for the last week or so has been
around low 30"s, I was in the attic the other day and the nails coming
through the roof are dripping water....I have a full ridge vent, full
soffit
on the west side of the house(and they aren't blocked by any insulation),
and gable vents. It is definately cold in the attic and there is about R25
on floor w/ barrier down towards living space, the roof was replaced about
10 yrs ago....what is causing this and should I be concerned?

First, find out whether this is moisture traveling along
the nails from the roof top surface to the under side, or condensing
from the interior attic air onto the surface of the nails (cooled
by their heads through the sheathing.)

--
Don Phillipson
Carlsbad Springs
(Ottawa, Canada)