How do you keep the toilet tank from sweating?

Answer 1

You can purchase styrofoam tank liners at most plumbing supply houses. Also, if you have access to the hot & cold water lines (hopefully you have a crawl space or basement below the toilet), you can install a mixing valve to put a small amount of hot water into the cold water line that feeds the toilet.

Answer 2

Lower the house temperature, for one thing. The sweating is caused by the cold water temperature inside the tank, compared to the relative warmth -and higher bathroom humidity- outside. If the bathroom's not overly warm, then your choices would be to either line the tank with an insulator, or wrap something absorbent or insulating around the outside of it. Raising the water temperature isn't a practical solution, because almost no toilets have both hot and cold water lines connected to them. You'd have to put an immersion heater in the tank, which in itself isn't too practical (though it could be done). Normally, only a bidet has a warm water supply. And that doesn't go to the tank for flushing.

Answer 3

If you own the house you can connect a hot water pipe into the pipe going into the toilet. That way the water will be warm and less likely to sweat from temperature differences. I saw it on This Old House.

Answer 4

The sweating is caused by warm moisture on the outside of the tank condensing when it hits a relatively colder tank. First thing I'd check is the ventilation in the bathroom. Good ventilation should remove enough moisture to solve the problem.

Answer 5

Check to see if the tank is running this will cause a constant flow of cold water to the tank. You can check this by putting a couple drops of food color into the tank if it shows up in the bowl you have a leak. at the flapper valve you can get one at the hardware

Answer 6

raise or lower the water temp!