Re: Lack of plumbing vent pipes for entire house
Generally the soil stack is continued up through the roof, a vent for the lav is attached to the soil pipe vent above the level of the sink and another to the bath. The reason being you don't want the flushing of the toilet or the emptying of the sink or tub to suck the water out of the other traps. The first floor would require a separate vent either going to the roof or attached to the soil vent above the upstairs bathroom highest drain.
Edit- Another option, if they are allowed would be Air Admittance Valve like the Studor
Last edited by JLMCDANIEL; 03-18-2009 at 10:55 PM.
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