Condensation on toilet.

[Spikey]

Hi all,

Just wondered if anyone know what causes condensation on the cistern of the toilet and what I could do to cure it? The water is building up and dripping onto the floor. I'm guessing it's the water temperature causing an issue?

Anyone had this issue?

Thanks.

 

[cheechm]

How warm is the water going into your toilet?!

 

[NuggetUK]

I've been getting this during the cold weather recently, nothing particularly to worry about. Leave a towel there if it really builds up.

 

[Deleted member 651465]

Difference in air temperature and moisture content in the air.

Try turning your heating down or leave the toilet door open, to equalise the temperature difference?

 

[Locky]

Stop urinating on the toilet seat

 

[Biohazard]

It's because the water is so cold, and the atmosphere around it in your house quite warm.. the water condenses on the cold surface.

 

[Wizzfizz]

As above.

 

[bitslice]

Pee into the cistern, that will equalise the temperature difference and stop the condensation.

Don't forget to put the seat down or you will get into trouble.

 

[Biohazard]

As above.

I should have really said moisture condenses, but you get what I mean..

 

[FlyingFish]

It's because the water is so cold, and the atmosphere around it in your house quite warm.. the water condenses on the cold surface.

This ^

Pipe the toilet cistern up to the hot water so the cistern will always fill to be warmer than the air around it. Voila! No more condensation

Mick

 

[Biohazard]

You get the exact same problem with extreme cooling methods such as vapor and peltiers. It's the same principle at play.

 

[Spikey]

LOL I knew I would get the wee joke! So basically it's a common issue that I can't do much about? I've wiped it off and opened the door, the heating isn't on high, we have set to 18 between 4-11pm.

 

[Participant]

You have extremely warm bum cheeks

 

[Wizzfizz]

We have the same problem, no idea how to fix it really. After so long mold starts to appear on ours.

 

[Wizzfizz]

You have extremely warm bum cheeks

And you know this first hand, right?

 

[Biohazard]

LOL I knew I would get the wee joke! So basically it's a common issue that I can't do much about? I've wiped it off and opened the door, the heating isn't on high, we have set to 18 between 4-11pm.

Chances are your water supply is unvented, aka from the mains, and it tends to be colder. Water storage tanks will bring the water temperature up a bit in relation to atmospheric temperature. It will become worse as air temp and water temp diverge, such as heating, and since the bathroom tends to be a moist room it's quite likely to happen. Keeping the room cool will help. Otherwise I wouldn't worry too much, it's only water.

 

[Mark A]

Same issue here and don't think there is any way to fix it. Maybe lining the inside of the cistern with some sort of insulation material?

 

[Biohazard]

Bricks, reducing the volume of cold water in the cistern might reduce the condensation effect a bit. Insulating pipes would help some too.

 

[Mickie]

you probably have a damp problem in your walls,

we dry all our clothes in the house over winter and hardly open winds, our toilet water is just as cold as any other toilet but we dont have this problem.

 

[Biohazard]

It isn't rising damp. It is atmospheric moisture condensing.

I see it from time to time, and the condensation covers the cistern up to the waterline of the tank and no more. It tends to be when it is quite literally frozen outside and roasting warm in. Unvented, like mine, makes it worse. Wall tiles & everything else in the room, apart from the cold pipes, are bone dry.