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Old 08-25-2009, 04:21 AM   #1
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Vent flashing question


Hello,
I just had a new roof installed and the vent flashing on the slope side has exposed roofing nails holding it down. It seems like all that I have read says this should never be done. Some of the flashing is nailed and exposed on the down slope side. I thought this can cause leaks thru the nail hole. Any advice or information sources to know waht is right would be appreciated.
Thanks,
J

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Old 08-25-2009, 08:13 AM   #2
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Vent flashing question


Vent flashing's commonly have exposed nails at the bottom end to prevent driven winds from getting under the flashing.
They should have been covered in caulking upon completion.

Assuming they are in flush there is no immediate concern, but you will want to get them caulked.

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Old 08-25-2009, 08:15 AM   #3
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Vent flashing question


I use Ice & water shield around vents/penetrations
This is supposed to seal around nails - & works very well
I put a dab of sealer/tar under the flashing - then nail

The amount of water that can leak thru is very minimal
You could also get more from longer nails & water vapor condensing on the exposed nail under the sheathing as Temps change

Not a roofer, but I'd think they should be sealed with something
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