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Old 11-23-2011, 01:19 PM   #1
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Just when you thought it was over... Leaking roof


So, I have posts all over the place about this stupid attic.

Last night, after getting growled at by the resident squirrel, I started getting dripped on.

The current roof was installed over the original wood and there are pretty wide gaps between some of the boards. The brilliant individuals who did the roof put tar paper down, then the shingles, and many of the nails don't go into anything at all. How can you not notice that???

So anyway, there are lots of nails that are dripping.

I can't get up on the roof and do anything about it at the moment. Is there anything I can do from the underside? If I wait until they are dry, will caulk around the nails do anything to help? I'm only thinking that if I can stop the flow then maybe the water will go down the roof instead of through it?

This has been going on for years so it's not any more of an emergency now than it was 24 hours ago when I didn't know about it. However, I'd like to do something about it as a stop-gap if possible.

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Old 11-23-2011, 02:36 PM   #2
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Just when you thought it was over... Leaking roof


Nope, water flows downhill, caulking from below won't help.
Rig up some plastic sheeting (like an upside down tent) from the rafters to funnel the water dripping into the middle of the sheet into a bucket. At least you will have contained the leak until the roof can be repaired in warmer weather.

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Old 11-23-2011, 02:47 PM   #3
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Just when you thought it was over... Leaking roof


Bob is right, there's no magic cure-all from the inside. If you caulk the nails the water will simply push the caulk right off. If you can contact a handyman or a roofer in your area, perhaps they can tarp the troubled areas of your roof for now and then make the needed repairs in the spring.
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Old 11-23-2011, 05:44 PM   #4
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Just when you thought it was over... Leaking roof


The nails missing wood, in it self, would not make a roof leak. You have more problems.
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Old 11-23-2011, 06:20 PM   #5
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Just when you thought it was over... Leaking roof


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The nails missing wood, in it self, would not make a roof leak. You have more problems.
The water is running down the nails and dripping, but I found no drips off of boards or wet boards. I'm not saying there are not other problems though!!
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Old 11-23-2011, 06:48 PM   #6
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Ventilation and/or insulation problems......?????
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Old 11-23-2011, 07:01 PM   #7
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Just when you thought it was over... Leaking roof


sounds like they should have resheeted the old roof deck instead of going over bad shiplap

as far as nails in between the boards means they probaly blew thru the shingles is why it is leaking. sounds like scab roofers and untill you have your roof replaced then resheet it you will always have problems
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Old 11-24-2011, 09:59 AM   #8
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Just when you thought it was over... Leaking roof


Quote:
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The water is running down the nails and dripping, but I found no drips off of boards or wet boards. I'm not saying there are not other problems though!!
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Ventilation and/or insulation problems......?????
+1

Are you sure the roof is leaking?

The nails will be little cold spots in the roof assembly and if you have dew-point temps and high humidity, the nails will form condensation and look like they are leaking.
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Old 11-24-2011, 11:30 AM   #9
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Just when you thought it was over... Leaking roof


We soaked two towels to "wringing out wet."

They are active drips, not condensation.

My point with the boards was that the nails that didn't go into a board appear to have damaged the shingles and underlayment, and those are the ones that are leaking.
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Old 11-24-2011, 12:09 PM   #10
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Just when you thought it was over... Leaking roof


If they used an air nailer, that would absolutely be true.

They would blow out the back of the shingle and break the seal healing strip around the nail rendering the shingle ineffective.

Sorry to hear about that.
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Old 11-25-2011, 07:08 AM   #11
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Just when you thought it was over... Leaking roof


This is why we ALWAYS re-sheet over shiplap.
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Old 11-25-2011, 10:39 AM   #12
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Just when you thought it was over... Leaking roof


Yeah... it's not shiplap. The attic "ceiling" is made up of plain 1x boards that are nailed to the joists. Many are up to 18 inches wide, though the occasional board is 6 inches or so. Most of the boards are very close together, but there are also gaps of up to an inch in places.

It looks like they did a tear off, then just layed down new tar paper and put shingles over it.
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Old 11-25-2011, 05:19 PM   #13
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Just when you thought it was over... Leaking roof


Then they are rough sawed boards. No warranty when shingles are put on this roof without resheathing.

I still think it's a condensation issue though. Anything else updated in the home lately?
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Old 11-25-2011, 05:55 PM   #14
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Just when you thought it was over... Leaking roof


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Then they are rough sawed boards. No warranty when shingles are put on this roof without resheathing.
Yes. The original rough boards to the house. I have not been on the roof. So perhaps there is OSB on top of the layer of tar paper that I can see from the attic, but I doubt it.
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I still think it's a condensation issue though. Anything else updated in the home lately?
Well, you're welcome to your opinion, and you're welcome to come over the next time it's raining. ;-)

Seriously though, no, it is not condensation. There have not been any major changes in the house lately, and this only happened when it was raining, not when it was simply cold. Our attic is only marginally warmer than the outside anyway. We only heat the upstairs to 55, we don't use the upstairs bathroom for showers and the downstairs bathroom isn't vented (and neither is the upstairs actually)
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Old 11-25-2011, 09:04 PM   #15
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Just when you thought it was over... Leaking roof


It sounds like you are rather confident that it is actually leaking. You should definitely get the roof re-done with new sheathing and new shingles.

There is no telling that you could get by with just a simple patch for the time being. If it leaks that bad with just rain, you will have plenty of problems this winter.

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