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    Ruidoso's Avatar
    Ruidoso Posts: 1, Reputation: 1
    New Member
     
    #1

    Nov 10, 2008, 01:59 PM
    Installing a new toilet
    I am installing a new toilet in a new room (old room just converted from office to bathroom)I have no plumbing in the room but under the room, is all the plumbing for the rest of the house. I feel comfortable installing everything I just didn’t know if I HAD to vent the toilet drain or not. I know I have to with the sink, but if I don’t for the toilet I didn’t want to bother runnig the vent to the roof (it's a new roof)
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
     
    #2

    Nov 10, 2008, 04:41 PM
    Hi Ruidoso...

    If you are planning on just installing a toilet and no sink then you will need to add a 2" vent to the drain line and run that up and out the roof as you suspected!

    If adding a sink, then you can use the vent for the sink to act as a vent for the toilet as well. Here, you would install a 3"x2" wye fitting into toilet drain line, run 2" over to sink, pick up sink and then run a 2" vent off the sink line up and through to the roof...

    Sorry, but seems either way you are going through that roof!

    Let me know if need more information... ;)

    MARK

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