water driping from roofing nails inside of ATTIC


-------------------------------------
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 welcome. Thanks Pat
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Feb 19, 11:21 am, Patpamp_at_optonline_dot snipped-for-privacy@foo.com (Patpamp) wrote:

Lots of nails? If so, new roofing may be in order.
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Fri, 19 Feb 2010 16:21:19 +0000, Patpamp_at_optonline_dot snipped-for-privacy@foo.com (Patpamp)wrote:

Call a roofer.
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Patpamp wrote:

My first guess is that you have way too much ventilation for wintertime. Are the "2 2x3 wall vents" gable end vents? If so try blocking them off. Also block off 3/4 of the soffit vents.
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

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.
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Fri, 19 Feb 2010 14:04:25 -0800 (PST), ransley

    I agree. The problem is too much moisture condencing on the colder nails. More ventilation will reduce the moisture.
    Often this problem develops when a bath fan has been venting into the attic.
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
snipped-for-privacy@hotmail.com wrote in wrote:

Or dryer is venting in the attic, dryer hose separated in the attic, HVAC has a faulty humidifier integrated.
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

================================================================= Something clearly wrong; if not a roof leak. Sounds like a) Too much humidity and b) Insufficient attic ventilation. Causes can be lack of a vapour barrier in ceiling of the rooms below attic space. 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.
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
ransley wrote:

yeah, I was thinking backwards.
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Patpamp wrote:

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.
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Feb 19, 11:21�am, Patpamp_at_optonline_dot snipped-for-privacy@foo.com (Patpamp) wrote:

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. :-)
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Feb 19, 11:21 am, Patpamp_at_optonline_dot snipped-for-privacy@foo.com (Patpamp) wrote:

Are all the nails wet or just a few, is there a pattern like a streak of nails. This will help determine whether its a leak or condensation.
Jimmie
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Sounds a little like mine when the humidifier got stuck ON.
Jimmie
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

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.
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Feb 19, 10:21 am, Patpamp_at_optonline_dot snipped-for-privacy@foo.com (Patpamp) wrote:

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
Add pictures here
✖
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Related Threads

    HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.