How do I stop condensation on my toilet cistern, its constantly wet and the floor underneath it is from drips?

Question

The cistern is not leaking its been checked. The problem is its in the bathroom but on an outside wall the bathroom is heated by central heating. Its the only place we have this problem.

Answer 1

This is water collecting on the outside of you toilet tank. It is caused by the water in that tank being colder than the ambient temperature. It is the same action of water condensing on the outside of a glass of ice water in the summer time.

The only way to effectively stop this is to raise the temperature of the water entering your toilet tank. If you hook up the hot water line to your tank instead of the cold water, you will stop this action. You have never seen water droplets on the outside of a cup of coffee, right?

Problem solved.

Answer 2

You will always get this if moist air condenses on a cold surface. There are several ways around this.
1. Warm the water in the cistern ( this is not practical and would be costly and wasteful of energy)
2. Dry the air in your bathroom - you will need a dehumidifier to do this but as the air in the bathroom is usually damp from the warm bath water this may not be a viable option either - it can also be expensive to buy and run a dehumidifier)
3. The cistern is usually made of ceramic material - this a relatively good conductor so will feel cold to the touch and so condense the water on it more easily - the solution is to fit one of the readily available plastic cisterns - possible problem is the cost of installation if you can't do it yourself.

An alternative to this is to "box in" the cistern with MDF panels and insulate between the cistern and the box. It can be done very effectively and can also improve the look of the cistern if done carefully - that is my recommended solution. .

Answer 3

My guess would be........that the cistern is plastic? China/ceramic/pottery cisterns are much less likely to suffer this problem. If that is the case, well the answer obviously would be, change cistern to china. If that's not the case, I'll shut up lol
Wow. I've just read others suggesting changing TO a plastic cistern, difference of opinion here then :-) My experience has been.......When I had a thin wall plastic cistern, it condensed like mad in the winter, But I've never had the same problem with a china cistern. I consider the structure of china is more cellular than plastic and therefore a better insulator

Answer 4

Plastic Toilet Cistern

Answer 5

This Site Might Help You.

RE:
How do I stop condensation on my toilet cistern, its constantly wet and the floor underneath it is from drips?

Answer 6

Its because the room is warm & the cistern holds very cold water.If you could line the inside of the cistern to prevent the water making contact with the ceramic this would stop the condensation. Something like spray on foam or similar

Answer 7

The moisture is carried in the air, and will condensate on any cold surface. If not the cistern then it will on another cold surface like a window.
You need to find out where the moisture is coming from, kettle steam? damp? Kitchen cooking? and let the steam out before it turns into condensation.
Are you sure the cistern is not leaking?

Answer 8

I will be watching this one too as mine does the same. Just been putting a little jug or towel on the floor for now and keep wiping down the cistern.

Answer 9

two ways to go about this ..first dry bottom of cistern ..then fix polystyrene to underside ..or you can connect the hot tap supply to the cistern ..its being caused by cold water in a warm room ..its very common ..changing to a plastic cistern often helps

Answer 10

Have you checked to make sure the cistern isn't actually leaking, or that the ball valve is properly adjusted.