Ask Experts Questions for FREE Help !
Ask
    jack.goode's Avatar
    jack.goode Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 25, 2009, 01:59 PM
    Vertical wet venting?
    I'm installing a half bath in my attic. There is a 2" vent from the downstairs bathroom sink that would be very easy to tap into for the upstairs sink. My question is, can I use this vent as a wet vent for the upstairs sink?
    massplumber2008's Avatar
    massplumber2008 Posts: 12,832, Reputation: 1212
    Senior Plumbing Expert
    		  
    #2

    Nov 25, 2009, 02:06 PM
    Hi Jack...

    Sorry... you can't connect a waste line from another floor to a vent from below. The velocity that the water drops at would create a DRAW/siphon effect on the PTRAP being served on the lower floor and will cause bubbling/gurgling and will allow sewer gasses to enter the home... a health hazard!

    I would run a 3" drain up there for the toilet and then connect the sink into that drain pipe. The vent from the sink can connect into the vent from downstairs at a minimum of 42" off the finish floor... at least that is a bonus!

    Hope that all made sense...

    MARK
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

25 adult having strange wet dreams. [ 2 Answers ]

I am 25 years old and have been going through a extended period of sexual drought. In the past week I have experienced two wet dreams and attribute them to the lack of sex. In both dreams they started with an attractive fit men, but I never have sex with them and end up having sex in my dream...

Venting Soil Line - Can I use 1 vent for all of my venting needs? [ 8 Answers ]

Hi, I am renovating an old house and have decided to add a master bathroom. I currently have 1 (ea) 2 inch vent pipe penetrating the roof line. I'd like to branch off the single pipe and run several vent pipes off the single one mentioned above to vent two bathrooms, the kitchen sink, and...

Vertical wet venting [ 4 Answers ]

I had a question if some one could help answer. Say if you had a toilet with a 3 inch line going directly back into the wall with a tee that is the main stack for the bathroom group with a 3 inch vent. Could you run a lav. Drain into the 3 inch stack vent above the toilet and use the vent as a wet...

Vertical jump [ 2 Answers ]

I would like to get information on how I can improve my jump verically in basketball

View more questions Search