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Old 11-28-2011, 04:00 PM   #16
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Vent pipe is leaking in attic


The existing boot should work ----most are just a sheet metal pan with a raised rubber ring that the pipe sticks through.

Removal is not always needed to replace the pipe---but is simple to do if you need------roofing nails and roof tar in a caulking tube are all you need---and perhaps a tiny bit of color match caulk to hide the exposed nails.

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Old 11-30-2011, 07:42 PM   #17
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Vent pipe is leaking in attic


Looks like that pipe was strapped down in order to pitch it towards the ground. *sigh*

Also, I cut the "old roof" so that relieved some of the pressure on the pipe. I did shake it a bit and I can certainly hear water in it. I suppose this is because of the bad pitch. I am going to cut it as close to the new roof I can and pitch it downwards. I bought a bunch of 22.5 and 45 PVC joints and I will try to just get everything to line up. I am going to also cut the pipe on the other side of the "old roof" to lower it.

Are there any tips or tricks to getting the angles / joints right, or should I just try my best to get everything lined up?

Thanks
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Old 11-30-2011, 10:57 PM   #18
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Vent pipe is leaking in attic


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Are there any tips or tricks to getting the angles / joints right, or should I just try my best to get everything lined up?
Just take your bag of different angles up there and a section of pipe and see what will work! See where you can cut and things will line up.

There are more angles available at a big plumbing supply.

Cutting higher or lower on the pipe coming up under the old roof will change your angles. Bring a tape measure/marking pen and allow for what needs to go into each fitting.

If you make a mistake, saw it off, add a coupling, and try again! This is very forgiving!

P.S. Take a bucket up there to catch the water from that pipe.
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Old 12-03-2011, 11:30 AM   #19
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Vent pipe is leaking in attic


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I will make sure that there is a proper boot up there - maybe lead if I can find it. I am in Philadelphia, so we get similar weather which lately means 20+ inches of snow at a time

What does the actual flashing get adhered with? If I already have a rubber boot (which I think they just replaced this year), what can I use to seal it up until I can replace it when I redo the roof (thinking 2-3 years)?
The lead "sleeve" is folded down over the top of the vent pipe, toward the inside of the pipe:
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Old 12-03-2011, 11:39 AM   #20
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Vent pipe is leaking in attic


Went up on the roof with a local roofing company. I can see spots where the roof deck is not even, also it looks like the nails are popping up under some of the shingles. I'm not shocked it's leaking a bit. The vent stack is ok - may need to be reseated.

I think I am going to just bang the nails down and apply some roof tar\caulk in spots to get me through the winter. Then in the spring I may just rip the back roof off and redo it so I can really see what's underneath.

As for the vent stack - I am going to do see if I can fix the leak tomorrow when I am back on the roof. Then work my way back to correctly pitch the pipe and just do it right.

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Old 12-26-2011, 11:00 AM   #21
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Vent pipe is leaking in attic


Hi everyone - I went up on the roof and banged down the nails, dabbed with tar and checked boot seals, etc. patched it well enough to stop the leaking from what I can tell. I will need a new roof in the next year or so, but this will get me through a season or two.
,
Also redid the angle of the vent pipe to drain downwards. Air sealed and insulated the attic with R60 cellulose. Sealed the attic hatch. Done.

Much appreciation for the people who contributed to the conversation. On to the next project.

B
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Old 12-26-2011, 11:18 AM   #22
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Vent pipe is leaking in attic


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On to the next project.
You can take a 12-pack up there with a radio and and do some observing. Could buy you some time from that next item on the list.

Last edited by hammerlane; 12-26-2011 at 11:36 AM.
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Old 12-26-2011, 11:18 AM   #23
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Vent pipe is leaking in attic


No more leaking?

FYI - I like it when I take the time to fix something right. Then the problem is solved for good!
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Old 12-26-2011, 11:27 AM   #24
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Vent pipe is leaking in attic


Spent 4 hours up there in a very heavy and rainy 2 days. I can still see where the plywood need to be repaired, but that will get done, correctly when I redo the roof in the spring.


I agree do it once. Thanks!
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Old 12-26-2011, 03:11 PM   #25
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Vent pipe is leaking in attic


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I will have to see about getting on to the roof, but the pipe looks more tilted in the picture. I checked it out with a level, it is not sloping upwards, but it is just barely sloping downwards. Should I just try to patch the PVC with something?
how about a picture with the level on there,it looks to me like its screaming down hill also!
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Old 12-27-2011, 07:57 AM   #26
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Vent pipe is leaking in attic


Just cut the thing off and use an air admittance valve. Problem solved.
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Old 12-27-2011, 08:04 AM   #27
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Vent pipe is leaking in attic


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Just cut the thing off and use an air admittance valve. Problem solved.
Yeah thatll solve the problem!
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Old 12-27-2011, 08:18 AM   #28
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Vent pipe is leaking in attic


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Originally Posted by OhmZoned View Post
Hi everyone - I went up on the roof and banged down the nails, dabbed with tar and checked boot seals, etc. patched it well enough to stop the leaking from what I can tell. I will need a new roof in the next year or so, but this will get me through a season or two.
,
Also redid the angle of the vent pipe to drain downwards. Air sealed and insulated the attic with R60 cellulose. Sealed the attic hatch. Done.

Much appreciation for the people who contributed to the conversation. On to the next project.

B
Please post a couple of pics of your fix.
We like to see that, too!!!

Nice job getting this thing done.
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Old 12-27-2011, 10:05 AM   #29
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Vent pipe is leaking in attic


Side observation.....

Obviously, the house has been added on to....the new roof joined to the old one in what is called "California Framing" in my neck of the woods....

I'm asking this because I'll be doing something similar soon.....wouldn't it be better to remove the shingles on the inside?

To the OP...did they at least remove the singles where the new roof joins the old roof?
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Old 01-13-2012, 09:53 PM   #30
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Vent pipe is leaking in attic


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Side observation.....

Obviously, the house has been added on to....the new roof joined to the old one in what is called "California Framing" in my neck of the woods....

I'm asking this because I'll be doing something similar soon.....wouldn't it be better to remove the shingles on the inside?

To the OP...did they at least remove the singles where the new roof joins the old roof?
I could not imagine the labor to remove these shingles once the roof was on would be worth it. They did mostly remove the shingles where it meets the ajoining wall. However, they just threw them along the edge. No joke - THEY LEFT THE GUTTER inside!

I did the insulation deep enough that even in this extra area, there was a 20" thermal envelope of blown in cellulose. This thermal envelope carried through to the original house.

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