I have a leak in my roof that only becomes an issue in the winter when the weather swings to warmer weather.. ie.. above 4 degrees celcius.. I removed some insulation to locate the area of concern and managed to roughly pinpoint the leaking area.. I stuck a peice of wood(red tape attached) through in roughly the same area as the water damage and this locating twig can be seen sticking out in one of the pics.. there is no noticable snow in the area where the leak is occuring on the roof so i am wondering what could be causing the leak.. there is metal flashing where the wall ties in to the roof shingles as well there was a water proof membrane beneath the flashing.. any suggestions as to what could be causing the continued water leak?
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Can't see the stick (unless it's that thing under the upper roof at junction between wall and soffit). Is the leak in the upper roof or the lower roof? Where/how does the leak make itself apparent? Are you sure you've got a leak and are not seeing moisture from melting condensation inside the roof?
leaking roof
the indicator stick is approx mid pic and 1/4 way down from the top.. the water entrance area looks to be right where the siding ties in to the shingles.. I can narrow the wet entrance area down to a exact location but I know there is metal flashing in that area.. this winter has been bad for watr penetration owing to lots of warm and cold weather cycles.. previous winters there have been leak concerns but not as bad as this past winter..
Richard
What is the siding detail-lap or some sort of channel siding?
How is that board running up the roof attached and does it go over the siding or is the siding cut to it?
You mention flashing and metal-are you talking about step flashing? How high up the wall does it go? And is it counterflashed with felt or housewrap behind the siding?
Original roof or a re-roof?
thanks.
If there's proper step flashing it CAN'T leak there unless there's snow piled up against it, creating an ice dam.
And again, how does the leak present itself? What's below this area?
leak in roof
I got on the roof today after i had used a thin drill bit and pushed through to the exterior to ID the location from outside.. i pushed the bit through right where the highest point of water staining had occured .. there is metal step flashing running atleast 2 feet beyond where the drill showed on the outside.. there is no noticable change in the lay of the asphalt shingles in the area of the drill exit.. If you look at the pic. attached i am wondering if it is possible that ice might migrate beneath the shingles from where the eave mets the main roof.. a bit of ice is visible right in that valley.. could the ice migrate across straight over to the wall of the dormer where the drill exit is? because this just happens to be where the bit pops out.. the ice dam would be mid to the far right of the pic.. the dormer wall is the hardi siding portion..
That's a fairly steep pitch roof. For an ice dam to cause a leak it must be taller than the "rise" of a shingle exposure.
You may have a leak due to a screwup with the step flashing, or a nail where it shouldn't be. Otherwise, water dripping off the roof above could be splashing up and getting into the siding.
Or maybe you have a leak because someone drilled a hole in the flashing.
I zoomed way in and stil don't see your indicatorof location.
That does not look like step flashing. It looks like a long L flashing. and the top foot of so of it looks slightly different at joint of flashing and siding, but too blurry to decipher.
Yeah, we need some close-up pictures. There may be step flashing behind the visible stuff. From here I can't even tell if the visible flashing is behind the siding or proud of it. (Why is the slanting edge of the siding so ragged -- just cut rough, or is that caulk?)
Maybe
I'm on his ignore, but it he'd address my questions above, it might clear up a few things.
I don't see the indicator twig either. There are a half dozen potential problems in an area like this.
But based on your description, I am thinking lie Dan, that it could be condensation. In all my yearss roofing, I think abouthalf of the 'leaks' I was called to fix turned out to be just that