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Old 12-27-2018, 05:35 PM   #1
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Leak or overflow?

Hi all, thanks in advance for help.

I just found water on my bathroom floor. No water had been run in the bathroom, however, I had just drained my front gray tank. It was overfull, standing water in the sink in the kitchen.

Ideas? Suggestions?
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Old 12-27-2018, 05:36 PM   #2
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Oh yeah, appears to be coming from under the tub.
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Old 12-27-2018, 05:55 PM   #3
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water leak

Hate to think it but it could be your shower/tub drain is loose and the water backed up from the gray tank. If your unit is like our the shower/tub & kitchen are drained into 1 tank along with bathroom sink. Need to check as soon as you can because water can and will cause horrible damage (experience on this)
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Old 12-28-2018, 08:15 AM   #4
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Agree with loose coupling under the shower. Probably not enough to make a difference in normal use, but enough when backed up like that. You need to look at the couplings (should do all of them), and tighten the loose ones up. Also inspect the area around the one under the shower. It could have been loose enough to leak under normal use, and you could have water damage under the shower.
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Old 12-28-2018, 08:54 AM   #5
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If you had standing water in the kitchen sink then the tub was probably full too? You can't have water in the sink without having it at the same level in other connected fixtures.
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Old 12-28-2018, 09:08 AM   #6
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If you had standing water in the kitchen sink then the tub was probably full too? You can't have water in the sink without having it at the same level in other connected fixtures.
Yep, this.
The tub/shower SHOULD be the first place that starts to hold water when the grey tank is full, assuming that's the lowest drain in the RV.
If yours hold water at a higher point (kitchen sink) then the lowest point would likely have leak.
This wouldn't necessarily hold true if your RV has more than one grey tank.
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Old 12-29-2018, 06:46 AM   #7
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I have 2 gray tanks,

Do I access under the trailer or do I have to rip the wall out?.. There is no access door under the tub.
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Old 12-29-2018, 08:46 PM   #8
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wall

You should be able to open up the basement wall and have a peek to look at the drain.
Our tub/shower has an access panel on the shower wall under the faucet handles. If not look to see if you can remove some kitchen drawers to see the shower area from there. Since don't know the layout of your unit these are only guesses of how to access the area.

Keep posted on issue and how you handle it, good luck.
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Old 01-11-2019, 08:55 PM   #9
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Hello again... Update... So,I opened under the tub, nothing is wet, opened the wall behind the sink, nothing wet.

Have been flushing my black with some regularity, and wonder if it is somehow leaking... If I don't get it tight enough, could it drip inside?

Fast forward to today, getting ready to pull out and friends noticed water dripping as I started to move.

THE WHOLE UNDERLINING WAS BOWED DOWN, hanging with gallons of water!!! Pressed it up against bottom of trailer and worked the water out(my friend did actually... He was a godsend)

Ideas? I think I'm going to have to call in a professional, as this seems like a path to mold! Luckily, it has been cold enough that I hope mold can't grow.

The water that came out was clear, somewhat stagnant smelling, but did not appear to be gray or black.

So... What do you think, could my finger tight only flush connection have dripped inside and down?
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Old 01-12-2019, 12:00 AM   #10
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Look inside your bathroom sink cabinet for the 'anti-siphon vacuum breaker'.....
Will have one water line going into bottom of device and one line coming out side of device
It is on the Black Tank Flush System to prevent contamination from backflow
Water pressure lifts up a disc that seals off open slots on top and then allows water to flow out the side to the spray nozzle in black tank
Disc fails to seal and water will spray out open slots on top flooding bathroom and going down into underbelly





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Old 01-12-2019, 04:19 PM   #11
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Thanks! Will look for this.
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Old 01-12-2019, 04:21 PM   #12
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Suggestions for the best way to dry the under? Or don't worry about it til it is warmer?
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Old 01-12-2019, 05:44 PM   #13
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Thanks! Will look for this.
In your original post you didn't mention flushing the black tank. Did you flush the black tank before you found water on the bathroom floor?
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Old 01-13-2019, 05:00 AM   #14
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Yes, have been flushing often... Flushing away a pile of dried dung from before I owned it. Never want to let that pile come back!

Did not think to mention in original post.
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