Seriou leak

[gargoyle158]

I think my toilet is leaking but I can't find the leak. the toilet is in the center of the damaged area but there is no water on top of the floor. It is only soaked subfloor. There is no water leaking from any of the pipe connections nor from the valve. There is no smell so I am assuming it is clean water. I think it is a city water problem because the pump does not cycle. I have a lot of repairs to do but it is useless until I repair the leak and I am on the road not expecting to be landed at a place I can work on it for about two months. Any ideas on how I can either blame the toilet or eliminate it as the source of my leak? I could replace the valve, the seal, the flange or the entire toilet but if that is not the source it is wasted effort, not including the money

[T18skyguy]

hostage wrote:

Tinstar wrote:
I'd bet the leak is around that window. I had the same problem. I guess you know not to use silicone when you reinstall the window. Use the poly-butyl tape.

on contraire silicon works fine;; just harder to remove next time
a rubber foam window seal sticky one side works the very best
though

Much respect to you, but using silicone is a rookie mistake. It always cracks under UV light. A much better choice if you want to use a caulk gun is GE Climaclear which is RV approved. There are others too.

[ArchHoagland]

How to make your signature so we can serve you better:

1. Log on and click "My Preferences".
2. On the "My Preferences" page click the middle box and enter your rig info.
3. Scroll to the bottom and click "Submit Changes"
4. Exit and you're done.

What make/type of toilet? There are several different kinds.

What year, make and model of RV?

Perhaps someone with the same RV has had the problem.

[hostage]

Tinstar wrote:
I'd bet the leak is around that window. I had the same problem. I guess you know not to use silicone when you reinstall the window. Use the poly-butyl tape.

on contraire silicon works fine;; just harder to remove next time
a rubber foam window seal sticky one side works the very best
though

[Tinstar]

I'd bet the leak is around that window. I had the same problem. I guess you know not to use silicone when you reinstall the window. Use the poly-butyl tape.

[gargoyle158]

OBVIOIUS STARTING PLACE WAS PUL THE TOILET AND REPLACE THE FOAM RING. dONE A LOT OF HOME PLUMBING SO THIS WAS AN EASY START. i EXAMINED THE FLOOR AROUND THE FLANGE AND THERE IS NOT ROT, NOTHING WET. i EXAMINED THE OLD RING AND IT WAS COMPRESSED EVENLY, NO STAINS, ETC. i REPLACED THE RING. i TESTED THE VALVE AND FITTING BOTH WITH PUMP AND CITY PRESSURE, NO LEAKS.
SO THE BAD NEWS, FOLLOWING THE LEAK BACK IT APPEARS TO COMING DOWN THE INSIDE OF AN EXTERIOR WALL. i WENT UP AND FOUND A COUPLE OF VERY SMALL CRACKS IN THE CAULK AND RESEALED THEM. HOWEVER I AM AFRAID I MAY HAVE CAUGHT THE LEAK TO LATE. THE FLOOR CLOSEST THE WALL THE SUB FLOOR IS WET, BLACK AND MUSHY. i DONT SEE ANY DELAMINATION OUTSIDE BUT SOME VERY VERY SMALL BLISTERS VERY LOW ON THE ENTERIOR. i HAVE A WINDOW RIGHT THERE SO i IMAGINE WHEN I GET SOME PLACE I WILL PULL THE WINDOW AND SEE WHAT IF ANYTHING I CAN DO FROM IN THERE. tHE FLOOR IS SHOT SO I WILL BE REPLACING THAT. BIGGEST ISSUE IS TRYING TO DRY THE WALL OUT.

THANKS FOR ALL THE SUGGESTIONS.

[Gjac]

I would put some toilet paper under flush valve, and water fittings, flush several times and see if there is any water on the paper.

[ScottG]

If you can't find dampness on the toilet itself in the area's others have detailed, your going to have to remove the commode and do a little exploring. 😞

[hostage]

gargoyle158 wrote:
I think my toilet is leaking but I can't find the leak. the toilet is in the center of the damaged area but there is no water on top of the floor. It is only soaked subfloor. There is no water leaking from any of the pipe connections nor from the valve. There is no smell so I am assuming it is clean water. I think it is a city water problem because the pump does not cycle. I have a lot of repairs to do but it is useless until I repair the leak and I am on the road not expecting to be landed at a place I can work on it for about two months. Any ideas on how I can either blame the toilet or eliminate it as the source of my leak? I could replace the valve, the seal, the flange or the entire toilet but if that is not the source it is wasted effort, not including the money

there is a air admittance vent one way valve on the toilets flush valve; it most likely leaks when you flush but when u release flush valve its shuts water off and wont leak ;; I say replace the water flush valve or flange seal depending on brand and style; mine has a pipe that sticks up and has a o-ring so it could never leak at the flange per say

[Passin_Thru]

Could be the ring it sits on. First thing I'd do is pull toilet, put in new ring seal. Tap the floor with a light hammer to see if you have a large area of soft sub floor. It should sound solid.

[enblethen]

It could be the water valve. Leaks when you flush.

[Bruce_Brown]

Is there any chance it's the vent leaking, with rain running down the outside of the vent pipe then pooling on top of the tank?

If that's not it I'd remove the toilet and take a good look around and see what I could find.