New Construction, roof leaking, I think

Eyeneedhelp

Building new house, has been closed in for 6 months (roof, brick, stucco, gutters, etc). No leaks until Hurricane Isaac pasted through. Drywall shows signs of water coming down from ceiling and reached the floor. There is a Dormer above this area and the bottom corner of the dormer has the flashing not nailed or do I see any caulking or roof tar under the flashing. So the end of the flashing is about half inch above the roof shingle and extends past the shingles This faces east which had a strong east wind driven rain with the storm. Checked attic area but did not see any wet wood. I still think this is where it is coming from.

Is there a better/proper way to end/water seal the end of this flashing?

thanks

joecaption

Without a picture it's anyones guess.
If it's was flashed correctly it would need no tar or caulking and would not be seen.

Eyeneedhelp

Taking picture now will try to post soon.

Eyeneedhelp

Does this help. Thanks Sorry for the orientation

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RJM Build

Its hard to tell from the pics, i cant tell what the flashing is doing when it comes off the corner and how it goes under the last course. Even wind driven rain does not like to run uphill. Usually the leak is coming from above the corner and it comes thru where there is a break in the plywood for the water to get into the house. I would look at the last step flashing (bottom) ans then if it is not apparent there look at the step flashing above.

I have also seen many windows leak due to improper flashing and the water will stay behind the tyvec and come out to look like a roof leak.

Rob Michael
Robert J. Michael Homes, Inc./RJM Build
rjmbuild.net

Eyeneedhelp

Will get better pic's in the morning, thanks

tinner666

That's 'channel-flashing' coming down over the termination flashing. It's done correctly, so to speak. Channel flashing takes a knack to do correctly and even then it leaks sometimes. It's a very cheap way of flashing.
It must be tapered. It must have an open inch of space along the wall for water to flow. Even then, it might leak. Here are some pix. Not only did the water overflow as evidenced by the stains on the felt, they also filled with trash that couldn't escape.
Step flashing does not have these shortcomings.

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Frank

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RJM Build

I have never in 29 years of roofing seen that system-always step flashing, but it might be a midwest/east coast thing. I see the theory.


Rob Michael

rjmbuild.net