I have water dripping from the nails inside of my attic. The attic is
vented by a ridge vent, soffit vents (both run the full length of the
house) and 2 2X3 wall vents. The heating trunk lines for the upstairs
heating (hot air) runs through the attic (they are fully insulated) and
the chimney also runs through the attic but is only used to vent the hot
water heater. The water is beginning to run down the insulation of our
cathedral ceiling and is running down the wall. Any suggestions would be
It would be the opposite, first you cant have to much as an attic
should be at exterior temp, condensation is caused by cold transfering
to hot so its undervented or just being heated from below to much,
Their heat supply in in the attic and its"insulated" , but not enough.
Something clearly wrong; if not a roof leak.
Sounds like a) Too much humidity and b) Insufficient attic
Causes can be lack of a vapour barrier in ceiling of the rooms below
Possibly something venting into attic instead of outside. Sometimes
done by cheap or ignorant builders.
Whatever the cause there is good chance of rot/mould and possible
health concerns. Also roofs are expensive! Recommend problem be
attended to before a new roof is needed.
In this climate the requirement is that there be a minimum of 0.3%
(that's 3 square feet per 1000 square feet of floor area) of attic
ventilation arranged to provide cross ventilation. In this house,
where the roof is 62 feet by 37 feet, and the actual attic some 60 by
33, or about 2000 sq. feet, we have gable end vents and have
additional vents along each soffit/roof overhang.
How many nails are dripping water? How old is the roof? All located
close to each other? Ice/or snow on roof? I would try, first, to
locate the spot on the outside of the roof to see if shingles are
broken, warped or missing. Look, also, at any water stains inside roof
deck. If the drips are low on the roof and there is snow or ice, it may
be ice damming that needs to be removed. Gutters full? Photos might help.
If you have either an old roof or leaks scattered about, you may need a
new roof. If you are handy, or have a handy friend, and there is only
one defect, can likely either replace a broken shingle or repair
protruding nail head(s) and seal them up. Bag up the wet insulation and
get it out, then put down a tarp until the leak is repaired.
On Feb 19, 11:21ï¿½am, Patpamp_at_optonline_dot firstname.lastname@example.org (Patpamp)
Just because the water is drippeing from the nails doesn't mean that
is where the leak is. The leak will probably be somewhere above that,
running down and dripping off the nails.
You have to determine EXACTLY where the leak is. Before you go getting
anew roof, check where the vents protrude thru the roof. many times
the rubber boots around them crack and leak. Then check the ridge
vents and other things protruding thru your roof. If you can't
determine where the leak is coming from, then call in a pro.
Hank <~~~~professional online fixer. :-)
Sounds like condensation if it is driopping from all or most of the
nails. The OP didn't say whether this was something new, the first
time they were in the house in the winter, etc. OP - Please fill us
in with these additional details.
On Feb 19, 10:21 am, Patpamp_at_optonline_dot email@example.com (Patpamp)
Most all nails? And I bet its not raining and not snow covered but
cold. Condensation occurs on the coldest part of a home, like cheap
windows or on windows when humidity is high or metal and your nails
would be the coldest thing hitting warmer attic air. So if im correct
in guessing its just cold out, your attic is undervented for the
ampount of heat loss and air infiltration getting into the attic from
below. This means sealing and insulating it better. It the wood
black , is it a new issue after work was done. Condensation leads to
mold, then wood rot, then big big repairs. How thick is insulation,
where do you live and what temp is it
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