Remodeling an upstairs bathroom with an existing double vanity. These sinks always drained slowly and had recurrent blockages. Any changes I could make to improve the drainage? Also is the HVAC line condensation drain location acceptable. House was built in 1998.
Double vanity and HVAC condensation line plumbing question
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John Gayewski
In the Trades
It's most likley not the piping. Generally when a lavatory is draining slowly it's from hair or other buildup in the stopper assembly.
The condensate line could be the issue as condensate water is slimy and makes thing goo up. Blow out the condensate line.
Adding a cleanout in the common drain would be a good idea. That double tee isn't great either, but I can almost guarantee that the drainage problems wasn't with the piping.
The condensate line could be the issue as condensate water is slimy and makes thing goo up. Blow out the condensate line.
Adding a cleanout in the common drain would be a good idea. That double tee isn't great either, but I can almost guarantee that the drainage problems wasn't with the piping.
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Thank you for the reply. Would it be worth reworking the double tee?
Then when you add more water, it only then starts rising? Does water in one bathroom sink make water rise into the other sink? If no the problem is local to the sink.
If water does rise in the other bowl, in the morning, when you have not been using those lavatories, and you dump a quart of water down the drain, what happens? Gets accepted pretty well? Then when you add more water, it only then starts rising? That would indicate a partial blockage farther along.
If water does rise in the other bowl, in the morning, when you have not been using those lavatories, and you dump a quart of water down the drain, what happens? Gets accepted pretty well? Then when you add more water, it only then starts rising? That would indicate a partial blockage farther along.
It was usually the sink on the right that was slow to drain while the left sink drained fine
John Gayewski
In the Trades
I think he had them demo'd. Hard to do any tests.
Good point. Guess we can rule out clogged stopper assembly too. So maybe run a hose into one of the drain lines and see how much water it can accept.
John Gayewski
In the Trades
If you reread the post he says, they always drained... Past tense. I'm almost sure was not the piping.
We get these calls a lot. People will even take their trap apart and clean it. Then call us thinking it's the piping.
Would a double Wye improve the drainage as opposed to the horizontal T?
John Gayewski
In the Trades
I think it would be worth reworking the tee if your gonna add a cleanout anyway. If you're not gonna add a cleanout the double fixture fitting that would go in place of the tee won't make it drain better it just let's you have a shot at running a snake down the common drain instead of passing straight through the tee when trying to clean the piping with a snake. Adding a cleanout would have the same goal, getting to the common drain in case of a problem. It's really just your call.
Double wye is no good for this. Double fixture fitting OK.
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