near toilet floor constantly wet

azward · February 3

the bathroom floor behind the toilet is constantly wet along the tile joints. what could be leaking?

HomerJSmith · February 3

More pictures all around toilet.

mattmia2 · February 3

it could be the seal to the closet flange or it could be the tank to bowel gasket or the washers on the tank bolts. or the supply line. or something in the wall. you need to get back there and look at where it is coming from.

Jamie Hall · February 3

There's a commonly overlooked source: condensation. If the relative humidity is high enough — unlikely in the winter, but not impossible — condensation can form on the tank from the cold water coming in and then drip down on the floor. I've had that happen.

mattmia2 · February 3

in winter the incoming water is the coldest so if you get a warm day or otherwise suddenly get a lot of humidity, the water is still cold but the humidity shoots up any at least here you get the most sweating of the tank in the winter and early spring

ChrisJ · February 3

Specific Men / Boys using the toilet a lot?

pumpcontrolguy · February 3

I've replaced many dozens of toilets in a former life. Seeing that moisture pattern and assuming you already ruled out the supply line leaking

-Tank to bowl ring gasket or bolt gaskets leaking

-condensation around tank dripping down, generally more common in summer in spaces without AC

-leaking wax ring and water seeping under tiles but coming up through grout joints

Grallert · February 3

Is the house on a slab? Looks like an under floor leak. It looks dry around the toilet .

Intplm. · February 3

@azward "What could be leaking?"

The packing nut on the service valve.

The closet riser/supply tube suppling water to the toilet.

The tank to bowl bolts are loose.

The tank to bowl washers used with the same bolts are worn out.

The flush valve spud gasket between the tank and bowl.

Condensation build up on the toilet.

The thoughts above can commonly be checked visually.

Below are not usually visible.

The next is the wax gasket that cannot be seen between the floor and the toilet.

Rarely the toilet could be cracked. I mention this here because a crack is not always visible.

If any of the above are not found, a rebuild with the above parts should eliminate the leak.

As what @HomerJSmith says above. "More pictures all-around."

ChrisJ · February 3

@azward take pictures of the underside of the tank where it bolts to the bowl. Take pictures of both sides, clearly showing the bolts sticking out.

HomerJSmith · February 3

Do the wet finger test. What's the wet finger test, you ask? Run a dry finger under the tank where it meets the bowel. If your finger comes up wet, you're honing in on the source of your concern.

pecmsg · February 3

connection from the storage tank to the toilet

Water inlet

You need to look under the tank

near toilet floor constantly wet

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