Ask Experts Questions for FREE Help !
Ask
    soundmanwill's Avatar
    soundmanwill Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Oct 5, 2007, 05:56 PM
    Adding a tub drain where a sink used to be
    I want to turn a half bath into a full bath in my basement. Currently the washer and dryer along with the water heater are in the half bath along with the commode and sink. I want to add a bath tub and the lay out of the room is such that the tub installation would probably require less work if it were placed where the sink is currently located and try to utilize the current sink drain. I was going to move the sink and vanity to where the washer and dryer currently are use the plumbing for the washer for the sink. My concern and question is this: The bath is on a slab and it appears that the upstairs sink shares the drain pipe for the downstairs sink. Should I build a small riser to place the tub on to accommodate the drain and if I try to use the drain the sink is currently using, will there be a drainage problem from the upstairs sink? Would it be better to cut a channel in the slab to install the tub drain than to try to build that small riser?

    I can’t see the route of the drain because it disappears into the bottom plate that is sitting on the slab

    Any suggestions?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Oct 6, 2007, 07:46 AM
    My concern and question is this: The bath is on a slab and it appears that the upstairs sink shares the drain pipe for the downstairs sink. Should I build a small riser to place the tub on to accommodate the drain and if I try to use the drain the sink is currently using, will there be a drainage problem from the upstairs sink? Would it be better to cut a channel in the slab to install the tub drain than to try to build that small riser?
    A partial blockage would back up into the lowest point, your new tub, no matter if the upstairs lav were draining into the downstairs lav vent or not. If it were a bathtub instead of a lavatory that was upstream from the new tub I would be concerned but the discharge from the upstairs lav will be much less so it should pass without backing into the tub. I would connect the new tub under the slab and not platform the tub above the slab. Good luck, Tom
    You haven't mentioned where the washer station will be placed. You will have to run a new vent on the washer when you cut in the drain.
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!

Slow Bathroom Sink Drain - but Tub and Toilet Drain Fine [ 4 Answers ]

I am hoping that someone can offer a suggestion to solve my problem. We recently purchased a 60 year old home. The sink in one of our bathrooms drains completely fine until the water has run for about 5 minutes and then all of a sudden it starts to back up and then drains very slowly. I have...

Slow Tub Drain; Draining Sink Overflows Tub [ 8 Answers ]

Hello! I'm looking for advice about some bathroom plumbing issues. We live on the ground floor of a condo building that has a cement slab. The tub in our bathroom has an extremely slow drain (ankles submerged during a shower). We've tried to snake the tub drain both through the drain and by...

New sink.now the tub won't drain [ 1 Answers ]

We just replaced our vanity in our main bathroom. Now, our tub won't drain. A friend said it was probably because there is air in the line, but I don't know how to remedy this problem. Our house is OLD, and there evidently isn't an air vent in the pipes--again, info from a friend. Meanwhile,...

Sink and tub drain problems [ 1 Answers ]

My bathroom sink has been very, very draining slowly. I tried plunging my sink and I tried drano without much effect. Now, water from my bathtub seems to be filling the sink when it drains. I want to try to snake the sink drain, but I'm worried about causing more problems with bathrub drain. I...

View more questions Search