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

    Dec 2, 2007, 08:19 PM
    Avoiding a new hole in the roof for a plumbing vent
    I added a new addition to my house. In it I want to put a sink and washing machine drain but I don't want to vent them through the roof as it is unsightly and at the front of the house. Can I tie in through the attic to an existing vent that already goes through the roof and still achieve the same ventilation qualities as I would if I went straight up through a new hole without using the existing vent?

    What about adding a toilet between that room and the existing main vent?

    Thanks, Dan
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Dec 3, 2007, 10:14 AM
    Can I tie in through the attic to an existing vent that already goes through the roof and still achieve the same ventilation qualities as I would if I went straight up through a new hole without using the existing vent
    This is called "reventing" and is perfectably acceptable. There is no loss of ventilation when you revent.
    What about adding a toilet between that room and the existing main vent?
    Works for me. Good luck, Tom
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