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Plumbing Code - Can I tie my bathroom exaust fan into the main plumbing vent to the outside.

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Plumbing Code - Can I tie my bathroom exaust fan into the main plumbing vent to the outside. johnnymo 10-31-2006
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Posted by Grandpa on October 31, 2006, 4:07 pm


johnnymo wrote:
> Yea, that is why I thought the idea was a good one, b/c it is a very
> short distance, just up 1' and over 1' ft, but the air vent still has a
> way to go, so I thought if there was condensation, it is going to drain
> down the air stack and into the sewer.
>
> I just want to make sure you guys don't think the sewer gas is going to
> make its way past my exhaust fan?
>
> Thanks
>
It will, you won't like it. Don't do it.
--
Grandpa

Radiant Heat 468x60
Posted by Grandpa on October 31, 2006, 4:05 pm


JoeSpareBedroom wrote:
>> Cool...I am fixing this house to live in, but not very long (~5 years),
>> so I wanna stay close to code so that people won't make me fix it when
>> I go to sell the house.
>>
>
> Be sure to wire the pipe as far up in the vent as possible, so moisture is
> blown all the way out. Otherwise, it's possible to have condensation on the
> inside of the metal vent, which may drip back down again. I wondered about
> this with mine, so I've observed while the shower as on full blast. You
> should do the same when you're done.
>
>
I sure hope you are talking about one of the attic vents and not the
sewer vent, Joe. Sounds like Johnny wants to hook into the sewer vent
pipe stack which will cause all sorts of trouble when he wants to sell
the house. Not to mention that "wonderful" odor he'll be trying to track
down in his bathroom on those occasional days.

My advice Johnny, is don't tap into the sewer vent stack unless you
intend to use it to dump sewage into.

--
Grandpa

Posted by Chris Lewis on October 31, 2006, 4:12 pm


> I sure hope you are talking about one of the attic vents and not the
> sewer vent, Joe. Sounds like Johnny wants to hook into the sewer vent
> pipe stack which will cause all sorts of trouble when he wants to sell
> the house. Not to mention that "wonderful" odor he'll be trying to track
> down in his bathroom on those occasional days.

Whaddya mean "occasional"? I suspect it'd be pretty much all stench,
all the time ;-)
--
Chris Lewis, Una confibula non set est
It's not just anyone who gets a Starship Cruiser class named after them.

Posted by johnnymo on October 31, 2006, 4:13 pm



Thanks Grandpa.

So, what is the difference in hooking up a sink to the side of the
sewer vent than hooking up a piece of flex hosing that goes down.

Maybe the trap? Is it b/c there is always water/gunk in the trap not
allowing the gases to go up through the sink?

My exhaust fan hose is always going to be dry so that would be a
problem. Hmm....maybe not such a good idea?


Posted by JoeSpareBedroom on October 31, 2006, 4:14 pm


>
> Thanks Grandpa.
>
> So, what is the difference in hooking up a sink to the side of the
> sewer vent than hooking up a piece of flex hosing that goes down.
>
> Maybe the trap? Is it b/c there is always water/gunk in the trap not
> allowing the gases to go up through the sink?
>
> My exhaust fan hose is always going to be dry so that would be a
> problem. Hmm....maybe not such a good idea?
>

Give some thought to the fact that nobody does this. Not ever. There is a
reason.



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