Moving Toilet Location In A Slab

 
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Old 03-20-2011, 11:49 AM   #1
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Moving Toilet Location In A Slab


Can anyone tell me about potential problems joining ABS plastic waste line to a cast iron waste line under a concrete slab?
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Old 03-20-2011, 12:34 PM   #2
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Re: Moving Toilet Location In A Slab


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Originally Posted by NorCalBuilder View Post
Can anyone tell me about potential problems joining ABS plastic waste line to a cast iron waste line under a concrete slab?
What exactly do you want to know?

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Old 03-20-2011, 01:10 PM   #3
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Re: Moving Toilet Location In A Slab


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Originally Posted by NorCalBuilder View Post
Can anyone tell me about potential problems joining ABS plastic waste line to a cast iron waste line under a concrete slab?
The potential problem I envision is leaking through the ABS to CI connection.
A rubber no-hub connector is a possibility,
make sure it's installed properly.
Also if the cast iron is already leaking, and you attach to it, you own it.
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Old 03-20-2011, 10:40 PM   #4
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Re: Moving Toilet Location In A Slab


Quote:
Originally Posted by skyhook View Post
The potential problem I envision is leaking through the ABS to CI connection.
A rubber no-hub connector is a possibility,
make sure it's installed properly.
Also if the cast iron is already leaking, and you attach to it, you own it.
btw, * Welcome to CT *
I have always used no hub connectors when switching from cast Iron to ABS above grade, but specificly was wondering about the longevity of the rubber and more specificey the metal bands that create the seal if they were to be burried in concrete. Is this a bad idea? Any insights would be helpful.
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Old 03-20-2011, 10:55 PM   #5
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Re: Moving Toilet Location In A Slab


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Originally Posted by MAULEMALL View Post
What exactly do you want to know?
I know you can use a rubber no hub coupling, but I am not sure if pouring concrete around the junction in an ok thing to do. I am moving a toilet about 12" and the existing waste line is cast iron buried under the slab. I don't know if there is enough fall to allow me to set the junction in the dirt under the concrete repair, but the concern is kind of the same. Is the rubber going to fail down the road or more specifically, are the metal straps that create the seal going to rust out and leak? Any insights would be helpful.

Thanks,
Tony
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Old 03-20-2011, 11:00 PM   #6
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Re: Moving Toilet Location In A Slab


Hey Tony, No hub coupling is pretty standard method.
If you have other issues or concerns call a plumber.
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Old 03-20-2011, 11:36 PM   #7
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Re: Moving Toilet Location In A Slab


It will be just fine
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Old 03-20-2011, 11:49 PM   #8
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Re: Moving Toilet Location In A Slab


Its not an issue. Go for it
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Old 03-21-2011, 09:20 AM   #9
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Re: Moving Toilet Location In A Slab


Thank you for the post guys, today I get to cut out the concrete....and use my new bosh 11316EVS SDS-max Demolition Hammer! I will post how effective the tool is. THANKS again
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Old 03-21-2011, 12:33 PM   #10
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Re: Moving Toilet Location In A Slab


Just wrap the connection with tar paper so the concrete won't actually make contact with the metal strap and rubber.
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Old 03-21-2011, 10:04 PM   #11
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Re: Moving Toilet Location In A Slab


That is a really good idea. Thanks.
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Old 03-27-2011, 07:44 AM   #12
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Re: Moving Toilet Location In A Slab


we do that in FLORIDA ALOT.....but what i do when filling in the hole. Is take pea gravel and pour it on top of the connection . Then fill with dirt no rocks and just pour concrete over that...


Thats how i do them maybe I am crazy
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Old 03-27-2011, 08:00 PM   #13
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Re: Moving Toilet Location In A Slab


We do it all the time.

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