Does A Toilet Have To Be Vented Per Code? - Plumbing - Contractor Talk

Does A Toilet Have To Be Vented Per Code?

 
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Old 03-23-2019, 10:16 AM   #1
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Does A Toilet Have To Be Vented Per Code?


I'm not a plumber but I might play one on my house.
I'm considering a half bath off my kitchen. I was told venting a half bath toilet was not necessary. I am wondering if it might be required by code... but to function, no. Thoughts or advice?
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Old 03-23-2019, 10:28 AM   #2
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Re: Does A Toilet Have To Be Vented Per Code?


How far away is the stack?

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Old 03-23-2019, 12:59 PM   #3
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Re: Does A Toilet Have To Be Vented Per Code?


No stack. No plumbing there now, its just a nook off the kitchen
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Old 03-23-2019, 01:20 PM   #4
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Re: Does A Toilet Have To Be Vented Per Code?


Where does the kitchen drain go?

Unless you're dead in the water, workwise, I would suggest biting the bullet to have a plumber rough it in, and maybe the supply, too. Then do the rest of the work at your leisure.
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Old 03-23-2019, 06:13 PM   #5
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Re: Does A Toilet Have To Be Vented Per Code?


Yes, the half bath needs venting. If you put your thumb over a straw in a glass of water, then lift it straight up, what happens? Plumbing drains need air to balance the air pressure and “chase” the waste. Otherwise you will get glugging, sucking air through the P traps and potentially allowing sewer gas to enter the home if the P traps aren’t full of water.
Just plan it all out


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Old 03-23-2019, 06:52 PM   #6
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Re: Does A Toilet Have To Be Vented Per Code?


I think you can us an auto vent in the wall but you have to use a removable panel so there is access to it.
I saw a picture of one once and it was low to the floor close to the toilet behind one of those plastic removable panels.

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Old 03-23-2019, 07:01 PM   #7
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Re: Does A Toilet Have To Be Vented Per Code?


AAV is a code compliant option in many (most?) places now.
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Old 03-23-2019, 07:32 PM   #8
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Re: Does A Toilet Have To Be Vented Per Code?


Toilets don’t have to be but the sink will.
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Old 03-23-2019, 07:52 PM   #9
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Re: Does A Toilet Have To Be Vented Per Code?


Quote:
Originally Posted by Big Johnson View Post
Toilets don’t have to be but the sink will.
No problem then, no sink, just use the kitchen sink....

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Old 03-23-2019, 09:22 PM   #10
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Re: Does A Toilet Have To Be Vented Per Code?


Quote:
Originally Posted by rjconstructs View Post
No stack. No plumbing there now, its just a nook off the kitchen
Just put a 5 gallon bucket in there, saves the cost of pipe...
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Old 03-25-2019, 11:04 PM   #11
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Re: Does A Toilet Have To Be Vented Per Code?


I think there is a six foot rule, toilet and sink within six feet of each other and you can use the sink vent as a wet vent for the toilet.
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Old 03-26-2019, 07:41 PM   #12
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Re: Does A Toilet Have To Be Vented Per Code?


thanks bubba
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Old 03-26-2019, 08:44 PM   #13
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Re: Does A Toilet Have To Be Vented Per Code?


Quote:
Originally Posted by HubbaBubba View Post
I think there is a six foot rule, toilet and sink within six feet of each other and you can use the sink vent as a wet vent for the toilet.
Uh.....Not exactly.

It's not the sink vent, it's a combination drain/vent called a wet vent.


RJ, the Code states that all traps must be vented. A Water Closet has an integral trap, therefore, it must be vented.

There is such a thing as a wet vent. I don't know what Code you use, but If it's the CPC/UPC, look at 908.2.
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Old 03-26-2019, 08:55 PM   #14
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Re: Does A Toilet Have To Be Vented Per Code?


Plumbers don’t vent toilets here. IPC doesn’t require one.
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Old 03-26-2019, 08:57 PM   #15
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Re: Does A Toilet Have To Be Vented Per Code?


Quote:
Originally Posted by Big Johnson View Post
Plumbers don’t vent toilets here. IPC doesn’t require one.
For real?

And they flush and everything?

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Old 03-26-2019, 08:59 PM   #16
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Re: Does A Toilet Have To Be Vented Per Code?


I know the IPC lets you discharge the drain from the T&P valve into the Smitty pan.

A change I wish we would get in the UPC.

Doesn't make any sense to me why we can't.
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Old 03-26-2019, 09:03 PM   #17
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Re: Does A Toilet Have To Be Vented Per Code?


Quote:
Originally Posted by Seven-Delta-FortyOne View Post
For real?

And they flush and everything?

2015 International Plumbing Code

909.1Distance of trap from vent.
Each fixture trap shall have a protecting vent located so that the slope and the developed length in the fixture drain from the trap weir to the vent fitting are within the requirements set forth in Table 909.1.

Exception: The developed length of the fixture drain from the trap weir to the vent fitting for self-siphoning fixtures, such as water closets, shall not be limited.
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Old 03-26-2019, 09:51 PM   #18
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Re: Does A Toilet Have To Be Vented Per Code?


So they are vented, there is just no limit to how far away?
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Old 03-26-2019, 10:32 PM   #19
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Re: Does A Toilet Have To Be Vented Per Code?


Quote:
Originally Posted by Seven-Delta-FortyOne View Post
So they are vented, there is just no limit to how far away?
Basically as long as there’s a vent somewhere in the house you’re covered as far as toilets go. Since all the other fixtures have to be vented, plumbers under IPC never provide a vent specifically for toilets.
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Old 03-30-2019, 03:05 AM   #20
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Re: Does A Toilet Have To Be Vented Per Code?


Where are you people coming up with plumbers don’t vent toilets. You must not understand venting at all but all toilets are vented. Just because there is not a vent stack beside every fixture does not mean it is not vented you have 8’ to play with and many fixtures are vented off of one stack which in many cases is the one stack you see your lav ties into. I’m like the other guy and wanna know what code you all go by if you don’t vent toilets.

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