How to stop toilet tank from sweating?
by
Estelle
+1
Live in south Alabama. The toilet tank constantly sweats. Cold weather and especially in the hot months. City water that is very cold all year round. This is the second toilet installed in the bathroom, still sweats. Anything I can do. New floors, do not want them ruined from dripping water.
Related Discussions
Suggested Project Book
There are 2 ways to handle this problem - dehumidifier or antisweat valve. Here's the link with details:
https://www.thisoldhouse.com/how-to/good-bye-sweaty-toilet
Line the inside of the tank with foam board insulation. They do sell foam kits at homecenters.
Water trickling through a toilet not only wastes water and adds to utility bills, it also makes the tank colder — and more susceptible to sweating — because your tank is constantly refilling itself with cool water.
To check whether the flap is sealing, put a few drops of food coloring into the tank and wait an hour or so. If the color appears in the bowl, replace the valve and flapper — under $25 if you do it yourself. (First, be sure the fix isn’t even simpler, such as untangling the lift chain.)
An anti-sweat valve, also known as a mixing valve, is a $30 plumbing part that introduces a little warm water to the cold water feeding into the toilet tank. Plumbers swear by it as one solution that always works.
Estelle: I live in the Colorado Rockies. The toilet water is REALLY cold. I also lined the inside of my table with foam board insulation. It REALLY helped!