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Started By
Message
Adding dog bath to basement.
Posted on 7/15/26 at 12:34 pm
Posted on 7/15/26 at 12:34 pm
I have an open area in our utility room that would be perfect for a dog wash sink. I've found a prefab one at lowe's that seems nice enough. Comes with a faucet and drain with maybe 5-10' of flex pipe and looks like an integrated trap. I think it's also designed to help with dog hair specifically for easy cleanout.
So if I buy this sink, I would need to tap into the existing water lines nearby which I'm fine with. I've been doing a bunch of plumbing work the last year so I feel pretty comforatable. The W/D is right there so I plan to take the lines that feed the W/D and tap into them with sharkbite tees and then use PEX to bring it around a corner up against the wall to the sink.
On the sanitary side, I will use the flex hose and run it back around that same corner and then tap into the existing sanitary line that fees both the washer as well as a sink/toilet on the other side of the W/D wall.
The walls are all open so that makes things relatively easy for access. What I need to know is what trouble am I looking at tapping into the sanitary? I know to keep everything at a 1/4" slope when moving horizontally. From there my plan is to tap into the existing sanitary either vertically with a sanitary tee at a vertical drop or horizontally with a wye fitting. Just depends on when I actually measure everything out what I will have space for. Do I need to add an additional vent? I'm in the basement so getting a stack up through the upper level and into the attic may be a non starter. That takes this project from something I can definitely handle (tapping into PVC/Copper) and turns it into a much larger construction job where I'd have to drill up through some bearing walls, go through my attic and then through my roof and patch the shingles/waterproofing/etc...
Can I get away with no vent on this new sink? Or is there some kind of vent I can use that vents into the same room? Obviously I don't want smells or odors inside the house but if it's just a way for air upstream of the p trap to leave the system that shouldn't be an issue right? Maybe an AAV?
So if I buy this sink, I would need to tap into the existing water lines nearby which I'm fine with. I've been doing a bunch of plumbing work the last year so I feel pretty comforatable. The W/D is right there so I plan to take the lines that feed the W/D and tap into them with sharkbite tees and then use PEX to bring it around a corner up against the wall to the sink.
On the sanitary side, I will use the flex hose and run it back around that same corner and then tap into the existing sanitary line that fees both the washer as well as a sink/toilet on the other side of the W/D wall.
The walls are all open so that makes things relatively easy for access. What I need to know is what trouble am I looking at tapping into the sanitary? I know to keep everything at a 1/4" slope when moving horizontally. From there my plan is to tap into the existing sanitary either vertically with a sanitary tee at a vertical drop or horizontally with a wye fitting. Just depends on when I actually measure everything out what I will have space for. Do I need to add an additional vent? I'm in the basement so getting a stack up through the upper level and into the attic may be a non starter. That takes this project from something I can definitely handle (tapping into PVC/Copper) and turns it into a much larger construction job where I'd have to drill up through some bearing walls, go through my attic and then through my roof and patch the shingles/waterproofing/etc...
Can I get away with no vent on this new sink? Or is there some kind of vent I can use that vents into the same room? Obviously I don't want smells or odors inside the house but if it's just a way for air upstream of the p trap to leave the system that shouldn't be an issue right? Maybe an AAV?
15
Posted on 7/15/26 at 12:35 pm to jlovel7
what's a basement
Posted on 7/15/26 at 12:35 pm to jlovel7
Good luck getting basement advice from Louisiana residents.
Posted on 7/15/26 at 12:37 pm to jlovel7
This is mine in South Louisiana 
Posted on 7/15/26 at 12:38 pm to Slippy
quote:
what's a basement
Leave the Gulf Coast.
Posted on 7/15/26 at 12:39 pm to medium_okra
The basement is irrelevant. I just need to know if I connect the water with no leaks, and connect the sanitary without adding a vent, am I going to totally frick myself? And any advice on working on sanitary line. I’m fine to cut and connect PVC, just curious about any tips or tricks or things to avoid especially with sanitary issues.
Posted on 7/15/26 at 12:40 pm to jlovel7
quote:
Adding dog bath to basement
Subtle basement brag.
Posted on 7/15/26 at 12:48 pm to jlovel7
DNR
Posted on 7/15/26 at 12:50 pm to jlovel7
That's a good question for a plumber. Not sure if the current vent will be enough and you don't want sewage back-up when you drop a huge deuce in the toilet and try to flush. I would make doubly sure that you get this right.
Posted on 7/15/26 at 12:50 pm to jlovel7
Make sure to get a walk-in bath for when he gets old. Dog years go by fast.
Posted on 7/15/26 at 12:53 pm to jlovel7
You can use a Studor vent for venting. They are against code here in Kentucky, but there are plenty of situations where you have to use one, such as this, because obviously homeowners don't want us running a bunch of venting up and through existing floors and walls to tie into the existing venting. I'm sure you can find them in Louisiana.
Code in Kentucky requires every fixture be vented individually. There might be something in your basement you could backvent too, but if you're a DIYer, just get the studor vent.
Running supply and drain lines to a dog wash is pretty simple and straightforward.
Code in Kentucky requires every fixture be vented individually. There might be something in your basement you could backvent too, but if you're a DIYer, just get the studor vent.
Running supply and drain lines to a dog wash is pretty simple and straightforward.
This post was edited on 7/15/26 at 1:57 pm
Posted on 7/15/26 at 12:56 pm to jlovel7
Are you starting a grooming business? My dog is nasty
Posted on 7/15/26 at 1:04 pm to jlovel7
You should invest that money in a pulley to raise and lower the basket in the pit in your basement.
Posted on 7/15/26 at 1:05 pm to Slippy
What’s a dog
Posted on 7/15/26 at 1:05 pm to jlovel7
Advertisement
This post was edited on 7/15/26 at 1:14 pm
Posted on 7/15/26 at 1:20 pm to jlovel7
Most of the year they will get the hose outside.
During winter I have an attachment in my walk in shower.
No need to overthink it.
During winter I have an attachment in my walk in shower.
No need to overthink it.
Posted on 7/15/26 at 1:23 pm to jlovel7
There is a place in town with a couple of dog was cubes you can rent for about $10. You use their towels and soap and there’s no cleanup for you to do.
Seems like a better strategy to me.
Seems like a better strategy to me.
Posted on 7/15/26 at 1:30 pm to jlovel7
If the discharge you are tapping into have a vent, you should be fine.
Posted on 7/15/26 at 1:48 pm to jlovel7
Use this plumbing configuration to do what you are asking. with the P-trap on the far left the receptor for your pet sink.
the vertical stack can be a a wet vet as long as it it only major fixtures (water closet, urinal, or washing washing machine) dump over a minor fixture (sink/tub/lavatory)
you will need to cut in a sanitary tee below the tee for the laundry sink then arm over and install a LS 90 with another sanitary tee on top. then re-vent the tee back 12" above the flood rim of the laundry sink.
reason you cant tie a major fixture over a minor fixture without a separate vent is the velocity of the major fixture draining will pull water out of the minor fixtures tap seal and you will get sewer gas into the space.
edit:
also you do not need to add the tee on its back on the horizontal line from the washing machine P-trap. just tie into the vertical stack
This post was edited on 7/15/26 at 1:51 pm
Posted on 7/15/26 at 2:01 pm to jlovel7
You wouldn't rather put in a walk-in shower that could do double duty as a dog bath?
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