[livewireinak]

I have to figure out how to fix my leaky vent. I read the Solved Leaky Stove Vent but that is not my problem. When we cook the leak is worse but in the winter we have constant leak down the vent I have not measured it but it could be as much on bad days more than a cup.

Today it rained and it was very moist all day really not what we are use too. The stove vent dripped and I remember how bad it is in the winter so I would like to figure out how to fix the problem. Now because I can get up there.

Ok my house was built in 1975 in Alaska and there is just a pipe that goes strait up through the roof and there is this little metal cone cap on top. I know I am showing that I do not know much in this so I might ask lots of questions.

Please help
livewireinak

[leroys1000]

You may need to remove the top cap and put a piece of
preformed metal flashing around the pipe where it
meets the roof.
The top of the flashing would need to be inserted under
the shingle while the bottom would be on top.
You should be able to find preformed flashing for your
pipe diameter at a hardware supplier.
Fasten it down and seal it with black jack or tar.
Look at the top cap and see if the outer edges are lower than
the vent where the smoke comes out.
For alaskan weather,you may need something like that to
keep the water from blowing into the vent.

[Knotbored]

I am going to take a stab in the dark and guess that this is condensation forming inside the attic, and not outside rain water.
Condensation forms on the warm side of a cold surface. The area betweeen the insulated flat attic surface and the diagonal uninsulated surface can get quite warm on a sunny cold day if that space is not properly vented. The exposed stovepipe can get quite cold where it enters that warm humid space and condenes that moisture-which runs down the pipe. Improper attic venting can also cause condensation on the rafters and it runs down and saturates insulation ruining the insulation properties.
Solution-insulate the stovepipe and add vents thru the roof to allow that humid air to escape.

[buck52]

Originally Posted by Knotbored

I am going to take a stab in the dark and guess that this is condensation forming inside the attic, and not outside rain water.

That was my first thought as well...
If it is uninsulated pipe I would certainly look hard at that first, before ripping the roof flange all apart...