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08-08-2011, 04:49 AM
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#1
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Montana Fan
Join Date: May 2006
Location: Nekoosa
Posts: 412
M.O.C. #5793
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Roof sewer vent cap
My sewer vent cap blew off on the highway yesterday. It's going to rain this afternoon, will I have a leak in my roof? I won't be able to get up there today...what do you think?
Thanks in advance!
Roy
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08-08-2011, 04:56 AM
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#2
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Montana Master
Join Date: Nov 2002
Location: Midlothian
Posts: 956
M.O.C. #40
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The rain will just go down the pipe into the tank.If the collar is still around the pipe you should not leak.
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08-08-2011, 05:00 AM
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#3
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Montana Fan
Join Date: May 2006
Location: Nekoosa
Posts: 412
M.O.C. #5793
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Thanks, Wayne............
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08-08-2011, 07:20 AM
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#4
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Montana Master
Join Date: Apr 2009
Location: Murrieta
Posts: 5,816
M.O.C. #9257
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I guess if it rains real hard, you'll need to check the tank level, but with that small of an opening it shouldn't fill up too fast.
As for the pipe as it extrudes from the roof and it is typically sealed very well with the right roof goop and the roofline should be just fine. Like Wayne mentions, the pipe goes down into whichever tank it is for and that's about it. Anything entering that pipe would go into that tank, if it enters the opening just right including rain, debris, animals, etc.
It's probably a good idea you get a replacement cap as soon as possible. Most of these are held on by friction just in case they get caught by something they can get ripped clean off. If they are screwed in place and then something hits them like a low hanging tree branch more damage may occur. I would prefer the screw on, but it's something to think about.
Enjoy the rain. Some of us wish we could have some to cool things down!
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08-08-2011, 08:21 AM
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#5
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Montana Fan
Join Date: May 2006
Location: Nekoosa
Posts: 412
M.O.C. #5793
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Thanks, Art...maybe see you down the road......
Roy
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08-08-2011, 09:00 AM
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#6
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Montana Master
Join Date: Dec 2007
Location: Kansas City, Missouri
Posts: 2,707
M.O.C. #7992
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Roy, You probably already know this but be sure it is the sewer vent cap and not the attic vent cap. Some call it the "mushroom vent". If it is the attic vent it will in fact leak water into the insulation and on to the top of your ceiling panels. I lost a mushroom vent cover and had to cover it with duct tape until I could get a new one. Jim
__________________
2006 3000RK
2009 Ram 2500
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08-08-2011, 12:46 PM
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#7
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Montana Master
Join Date: Apr 2009
Location: Murrieta
Posts: 5,816
M.O.C. #9257
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I've heard of an RV attic vent cap several times now but I don't understand how this works. I thought there wasn't much of an attic since my ceiling follows the roof line and I can't imagine there's much of an attic especially since I thought the space is completely filled with insulation anyway?
Would someone please explain how this works? Or where there would be enough space to know? Thanks.
I'm hoping Lampchop did lose a sewer cap because that's what I described because I have seen that. But admittedly, I didn't think of other cap types, like what jimcol describes. Thanks for bringing up that possibility. In the meantime I hope the rain doesn't last too long in case we were talking about the wrong vent pipe.
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08-08-2011, 03:48 PM
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#8
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Montana Master
Join Date: Dec 2007
Location: Kansas City, Missouri
Posts: 2,707
M.O.C. #7992
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Art, The aluminum roof joist are about 4"'s in height. As you stated there is insulation in the space between the ceiling and the roof. The mushroom vents just help this area breath and possibly cut down on condensation forming in the attic. I'm not sure how effective they are but on a hot day on the roof you can feel minor air flow comming out of them. Not sure when they started using them but they came on my 06. Jim
__________________
2006 3000RK
2009 Ram 2500
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08-09-2011, 03:17 AM
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#9
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Montana Fan
Join Date: May 2006
Location: Nekoosa
Posts: 412
M.O.C. #5793
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It's diffidently the sewer cap that came off. It sits near the outside wall. I found at my dealer, they have the replacement caps separate.
Here is a rough picture of it:
It has two spring clips to hold it on. Cost is about $4.50. This way you don't have to unscrew the whole base.
Roy
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