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

    Jun 5, 2010, 10:41 AM
    How do I put in a new vanity when the sink plumbing comes through floor
    I'm replacing my old bathroom vanity and the plumbing to the sink comes up through the foor. How do I install my new vanity with out changing the plumbing?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
     
    #2

    Jun 5, 2010, 11:32 AM
    Quote Originally Posted by izafrank View Post
    I'm replacing my old bathroom vanity and the plumbing to the sink comes up through the foor. How do I install my new vanity with out changing the plumbing?
    The best way would be to tear everything out and run a vent out the roof/
    But that doesn't answer your question, Install a AAV, (air admittance valve, see image) just behind the trap,(see image) and your sink will be vented without a lot of changes, Good luck, Tom
    Attached Images
      
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
     
    #3

    Jun 5, 2010, 11:45 AM

    You remove your trap and all stop valves back to a point where you just have 3 pipes coming straight up through the floor. Take careful measurements of the 3 pipes and their location compared to the back wall and transfer these measurements to the floor of the vanity. I'd make a cardboard template to test out my accuracy. Cut holes in the vanity to exactly match the pipes and drop the vanity down over the pipe, no sink installed at this point.
    creahands's Avatar
    creahands Posts: 2,854, Reputation: 195
    Ultra Member
     
    #4

    Jun 5, 2010, 04:30 PM

    Ballenger nailed it. If u are going to remove the shut off valves, be sure to shut off main water supply until after u have reinstalled valves,

    Chuck
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
     
    #5

    Jun 5, 2010, 07:31 PM

    LOL yes shutting off the water main would be a good idea. Thanks Chuck. Cover all 3 open pipe end with masking tape while you work helps too.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
     
    #6

    Jun 6, 2010, 06:13 AM

    Hey guys! Did I miss something here? The fact that the drain exits through the floor tells me the vanity isn't vented,
    Bob gave very good advice about setting the cabinet over the pipes but stropped short of giving directions on hooking up the supplies and drain. Am In the only one that thinks the old vanity wasn't vented?
    Regards, Tom
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
     
    #7

    Jun 6, 2010, 08:04 AM

    Tom, drain pipe through the floor only tells me one thing, neither you or I did this job. Never know what's going on when I run into this kind of junk. One was an S trap and the other went into the floor, did a 90 into the wet vent in the wall. Who knows what OP has. I am just sticking with the question oresent :How do I install my new vanity with out changing the plumbing?
    " Sounds like he is looking for more of a carpentry answer than a plumbing approach but you could be right in your suspicion

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!

What's the Standard Plumbing for a Double Sink Vanity [ 3 Answers ]

I recently remodeled my bathroom, which could previously only accommodate a 30" single sink vanity, to be able to contain a 60" double sink vanity. This was done by moving the wall on one side of the original vanity about 30" from where it was. Looking at the vanity that I want to buy,...

Changing floor plumbing to wall plumbinf for bath vanity [ 4 Answers ]

Hi I have floor plumbing to my bathroom vanity. Most of the styles of vanities available now are wall plumbed vanities. Is it a diy to change the plumbing from floor to wall? Or hire a pro? I have a crawl space beneath the bath and can access MOST of the plumbing.. but not sure where to start...

Single sink vanity to a double sink vanity [ 1 Answers ]

How do I convert the waste line from a single bowl sink to a double bowl sink vanity. chowdry

Slow drain, new vanity, sink, and plumbing [ 5 Answers ]

I have just completed installing a new dual sink vanity in an upstairs bathroom. I opended up the wall behind the vanity to redo the plumbing as it was formerly a one sink vanity. My problem now is the sinks drain slowly (with hot and/or cold opened up the bowls gradually fill). It doesn't make...

Plumbing - 1st floor sink backs up in sink below [ 3 Answers ]

I have a 1st floor kitchen sink directly above a basement sink. When the 1st floor sink is full, it drains quickly and backs up in the sink below - which then drains relatively quickly. No other problems here - the dishwasher drains fine, general use is fine - it's only when there's a full sink of...


View more questions Search