james macneil
1/29/2018
I have a corrugated metal roof. There is a leak at the eave near the end of the valley. I've pulled off one of the soffit panels and see that water is leaking in that area. I've run a garden hose over the valley area and can't seem to find where the leak is at. I'm sending a picture of the valley. The leak occurs underneath the area at the end of the valley. I can also send a second picture of the leak under the eave. Thanks, James
Eric Novotny
An informed customer is the Best Customer!
1/29/2018
Picture from further back please.
Guest User
1/29/2018
Does this only occur when it is a down pour? I am not able to tell from the picture that you sent if 1) one side of the roof is shorter than the other. if the volume of water is significantly greater on one side of the valley than the other; the water will go over the 'w' and up the open flutes (I assume the flutes are open). the way to fix is to increase the height of the 'w'. 2) does the valley go under the lower roof panel? are you relying on caulk/sealant to seal the valley? I hope this leads you in a direction to correct the problem. if not do not hesitate to reach out to us.
james macneil
1/31/2018
Here is a picture of the valley from farther back. I really notice a sizeable leak under the eave when it is a sizeable downpour or just steady rain for a couple of days. The end of the valley flashing does not go under the roof panel, so the flow of water is running on top of the panel and into my gutter. The two pieces of flashing are laid correctly where the upper piece over laps on top of the lower flashing piece. This valley is actually a repair on my roof. The original valley was only an inch and 3/4 to two inches away from the water diverter in the center of the valley flashing. This new valley is roughly 4 inches away from the water diverter on each side, so I now have a valley that is double the width of the old one. I have read the Union Corrugating Metal manual and as far as I know this new valley meets the required installation process. I do believe water was jumping the water diverter with the old narrower valley because the sheathing would get wet higher up the roof. The sheathing doesn't get wet that high up the roof, but I still get a leak at the end of the roof right near the base board. I can also send another pic of the leak underneath the sheathing.
james macneil
1/31/2018
Here is a picture of the leak from underneath the sheathing. This leak has been occurring for nearly three years. I still haven't noticed any wood rot or mold spreading to other parts of the sheathing. I feel this roof has kind of become a bit of a money pit for me. I'm real hesitant about spending money on another repair because I really feel this repair was done to specifications laid out in the Union Corrugating Manual.

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