How to Fix a Toilet Tank Leak | Toilet Leaks from Bottom of Tank

How to Fix a Toilet Tank Leak in 7 Steps

fixing toilet tank leak

Few things are worse than dealing with a leaky toilet. Chances are pretty good that you will deal with a cracked or broken toilet tank at least once in your lifetime. Leaky toilets are a nuisance. They waste water and create a bothersome noise. That's why it's so important to know how to fix a toilet tank leak.

Many who find their toilet tank leaking initially panic because they don't realize just how easy it is to fix. Our aim is to alleviate those concerns with this easy-to-follow tutorial.

Diagnosing the Leak:

The nature of the leak is pivotal in determining the fix. If the tank is cracked, you will need a replacement tank. The most likely scenario is that the connection between the tank and the bowl is compromised. The following tutorial is written for fixing the connection, the same general steps should be followed when replacing the tank.

Fixing a Leaky Toilet

Make sure to read all the way through the instructions before beginning, to ensure you understand the complete process and are prepared with all the necessary tools beforehand. This kind of foresight will lead to a smoother project.

7 Easy Steps for Fixing a Leaking Toilet Tank

  1. To begin, you will first want to make sure your water is completely shut off to your toilet tank. You can turn off the water to your toilet at the shutoff valve below the tank where the supply lines connect to the wall.
  2. Next, drain your tank completely so that there is no water left in the tank. You can use a sponge to soak up any extra water which is hard to reach in the bottom of the tank.
  3. water leaking from a toilet
  4. Then, unscrew the tank bolts. Use an adjustable wrench to hold one of the tank bolt nuts and use the appropriate driver to loosen the other bolt which is found inside the tank. Continue the same process until both bolts are removed from the tank.
  5. Now, remove the tank from the toilet and carefully lay it on the ground. If the tank is too heavy, or you are worried about breaking it, it might be a good idea to get some help from a friend or family member.
  6. You will then remove the old spud washer and insert a new one. If you are having a hard time getting the old spud washer off of the tank you may need to use an adjustable wrench.
  7. Next, you will want to remove any old gaskets or bolts and replace them with new ones. You can use a wire brush to scrape off the residue from old bolts or gaskets that may be stuck to your tank. Once you have a clean surface, install the new gasket and prepare to re-install the tank.
  8. With the hardware that you removed from the tank earlier, reposition and secure the tank. Once you have your toilet tank back into place you can tighten the bolts and nuts with a screwdriver and adjustable wrench. Test it out by opening the supply valve, filling the tank, and flushing the toilet.

Save on Repairs with PlumbersStock

Remember, you can save big on all the parts and tools necessary to complete this project, right here at PlumbersStock, and at an affordable price. Try this Bemis 1200SLOWT-168. Thanks for reading. Remember to have all the right plumbing tools on hand when you begin your project. Let us know if you have any pro tips for dealing with a leaking toilet tank.

Find other how-to plumbing tutorials here on the PlumbersStock.

Related Resources:
Measuring a Toilet Rough-In
Replacing a Toilet Flange
How to Replace a Water Supply Line

Shopper Award