Toilet Tank Leaking From Bolts-Causes & Fixes

 Toilet Tank Leaking From Bolts-Causes & Fixes

:How To Fix It Yourself!

The toilet tank is a large, heavy object that sits atop a toilet bowl. It’s one of the most visible parts of a toilet, and it’s usually made of a single piece of metal. This means that when the tank starts to leak, it’s often very easy to notice—and fix. But what happens when the tank leaks from the bolts that connect it to the toilet bowl? Does it still leak? And if so, how do you fix it?

I am going to discuss about Toilet Tank Leaking From Bolts-Causes & Fixes 

Why Toilet Tank is Leaking from Bolts + Fixes

Damaged Washers

Corroded or Damaged Tank Bolts

Misaligned or Loose Bolts or Washers

Damaged Bowl Gasket

Toilet Leaking from Tank Bolts when Flushed

Plumbers Putty for Leaky Toilet Tank Bolts?

Are Toilet Tank Bolts Universal?

Leaky Kohler &American Standard Toilet Tank Bolts

Why is my Toilet Tank still leaking after Replacing Bolts?

Brand New Toilet Leaking from Tank Bolts-Why?

Why Toilet Tank is Leaking from Bolts + Fixes

Damaged Washers

In a two-piece toilet, the tank and bowl are separate pieces.

During installation, you attach the tank and the bowl with bolts, washers, and gaskets.

This is a toilet-to-tank bolts diagram The rubber washers go inside to stop water leaks inside the tank.

It’s a must-have for any bathroom! Between the tank and the bowl goes a brass flat washer and brass nut to connect the toilet

The additional washers and nuts are placed under the toilet seat.

If you have worn out toilet bolts, the best thing to do is replace them.

Dripping water on the bolts and nuts, as well as the floor beneath them, shows the washers need to be replaced

How to Remove Damaged Washer

You need an adjustable wrench, as well as a set of bolts, nuts, and washers, to accomplish this task.

Follow the procedure below:

1. Empty the toilet tank of any remaining water.

First, make sure to turn off the water supply to the toilet by turning off the water valve that’s in the back of the toilet bowl

Make sure the toilet bowl is completely emptied before pulling the water supply pipe from the tank.

It’s important that you soak the bowl so that you can remove the residual water.

2. Take off the tank’s lid.

Locate the tank and remove the cover. Place the tank on a pile of towels or blankets to make room for the tank.

3. Unbolt the nuts and bolts.

Loosen the nuts from the bolts by turning the tank with an adjustable wrench, and if the bolts are stuck, have a helper turn the bolts with a screwdriver from inside the tank while you hold the nut with the wrench.

It’s much easier to free the nuts if you apply penetrating oil to loosen them before you get started.

4. Remove the tank and place it on a cushioned surface.

If the tank is heavy, the best thing to do is to ask a friend to help lift it and place it on the padded surface.

For safety, lay it flat.

5. Replace any worn-out washers.

After removing the bolts from the tank, remove the old rubber washers.

This 2 pack toilet tank to bowl bolt kit that includes heavy duty solid brass bolts with extra long + double gasket is a must have for all toilet tank

How to Replace Damaged Washers

Follow these instructions to install the replacement washers.

Place the bolt through the top of the tank and then position the rubber washer on the bolt on the inside of the tank.

Use the new rubber washer and the new bolt nut to tighten up the bolt.

The tank should be fastened to the toilet bowl housing by a new metal washer.On the second bolt, replace the washers and nuts in the same order.

Replace your toilet tank. Disconnect the water supply lines at the wall outlet, remove the tank from the tank valve and replace the old tank gasket and bolts.

Screw in the bolts, then verify that the tank is aligned correctly and is perpendicular to the base.

To refill the gas tank, connect the gas line and make sure that the cover is in place.

Check the bolts every so often for leaks; if you find any, you may need to repeat the process or get a professional to check it out.

You can repair leaking tank bolts by following these simple instructions.

If you’re trying these tactics on your own and they aren’t working, it may be time to get some professional help.

Corroded or Damaged Tank Bolts

Hard water can cause corrosion in your tank bolts. Homeowners who live in areas with particularly hard water can prevent this by using solid brass bolts.


If you are using hard water, you should spray your bolts with rust protectors.

This will help extend the life of the boat, so that there is no rust in it and it doesn’t need repair.

If the nuts and bolts on your tank bolts are damaged or corroded, you can easily replace them with new and rust resistant materials.

This is easy to do with a mini hacksaw. If the bolts just spin in circles instead of becoming loose, remove and replace them.

To remove them, use a small, flat-head screwdriver to gently pry the nut out of the hole in the bolt, then gently work the bolt out of the stud.

Twist the wrench to the left. These should loosen up.


Turn off the water coming from the tap going to the tank.

Flush the toilet after emptying the toilet tank to prevent a failure.

For a canister style, lift the handle up.

Then remove the tank lid.

You can put a container underneath the sink to catch any water from leaks, to disconnect the water supply and the fill valve

Remove the two bolts, washers, and nuts below the bowl.

You can’t take off the spacer, bolts, and washers from the bottom of the bowl Take the tank off the bowl and gently place it on the bottom of the bowl.

Align the bolt holes and slip a washer into each hole. You’re done!

Hold the tank in the right position and install the washer and a bolt into the bottom of the tank.

Tighten the nuts. To tighten the nuts, start by loosening them with your fingers and then tighten them gently using a screwdriver.

It’s important to be as careful as possible so that you don’t crack the porcelain.

Take the nuts off and turn the water back on. Give your toilet a test flush.

If you’re worried about a leak, it’s always best to check.

Misaligned or Loose Bolts or Washers

Here’s how to get the answer right, align the bolts and tighten them.

Pull the chain and tighten the nut. Then pull the chain, and tighten the nut using a screwdriver or an adjustable wrench.

It is vital to be as cautious as possible so that you don’t crack the porcelain.

A lot of the time if you do not tighten up the nuts that are holding in your toilet, when you flush it, it could leak.

There’s no way you can know if there are any leaks in the shower without checking for them.

Damaged Bowl Gasket

If the tank-to-bowl gasket becomes damaged due to worn-out bolts or worn-out washers, that can make

A gasket is where a tank attaches to a bowl.

If you’ve been experiencing toilet leaks, then you can use this seal to fix the problem.

Replacing the tank to bowl gasket

Remove the old gasket and check for any damage. If it looks worn or damaged, replace it.

To replace the washer, follow these steps: Turn off the water supply valve.

If you have a flush-style tank that is not working correctly, there are three ways you can empty the toilet tank.

To fill the tank, you need to open the valve, unscrew the cap from the tank, pull out the old hose, and install the new

You can put a container under it to catch any water Take off the lid and disconnect the supply line and the fill valve.

If you have an older model of the toilet, and notice any leaks, try replacing the old toilet and gasket.

When the toilet is ready to return the toilet, do not forget to fix it in place with the new bolts and do not tighten them so much.

Reconnect the fill line and turn the water back on.

If you want to check your toilet for leaks, you will have to flush it.

Toilet Leaking from Tank Bolts when Flushed

Loose or misaligned bolts or washers can be caused by loose or out-of-spec nuts and was

An oil leak can happen shortly after the replacement of the oil pan.

Plumbers Putty for Leaky Toilet Tank Bolts?

The plumber’s putty is not intended to be used as a sealant for the tank bolts that secure tanks to a tank base

Don’t use this product when your hair is wet as it will result in split ends.

A great sealant, but it won’t provide the full seal that you need when it comes to your tank bolts.

By using a sealant, you can keep the parts from moving out of position.

If you want to do a lot of plumbing, you should consider buying a large quantity of silicone sealants and storing them in your garage or attic to save money

The silicone should be applied to the water closet bolts and the adjoining area of the wall on the interior side of the water closet.

If you have rusty bolt heads, then it’s a must that you cover them up with the right amount of epoxy resin.

Use the silcone only on areas that are clean and very dry.

Silicone is a great adhesive, especially when it’s applied to a surface that’s already sticky.

You can apply the patch over the entire bolt head at once, but the adhesive won’t be sticky enough to make sure that it stays in place when you’re

A second application of a silicone adhesive will not bond very well to a cured first layer.

You should make sure to fully cure the silicone before attempting to put the water closet back into service.

Are Toilet Tank Bolts Universal?

Most tank-to-bowl repair kits include a set of tools that fit toilet bowls of different widths. The kit contains bolts that fit different toilet bowl brands.

You’ll have to determine whether the bathroom you’ll be building a custom bathroom or building a freestanding toilet before you order any parts.

Make sure the size you’re ordering is the same size as what you already have.

Leaky Kohler &American Standard Toilet Tank Bolts

Most toilets leak because of damaged or misaligned bolts and washers. Replacing the bolts and washers is the most common cause of toilet leaks.

Check the solutions discussed above for details. Kohler and American Standard toilets have their own kits.

Why is my Toilet Tank still leaking after Replacing Bolts?

Some of the nuts on the bolts may need to be tightened up.

One way to check for leaks is to get an air gauge and put it in each of the holes.

They should be snug. It should be important to avoid having over-tight nuts that can damage the gasket or crack the toilet bowl or tank.

In addition, the leaking of the toilet may not be caused by the bolts, but it might be the gasket or even the Flapper

Brand New Toilet Leaking from Tank Bolts-Why?

If you have a toilet leak, it’s probably because the toilet is loose. Try tightening the tank connection.

You’ll need to check the connecting bolts to make sure they’re tight. If you notice that they’re loose, use the screwdriver to tighten them.

Screw the bolts into the valve cover. The best seal occurs when you make sure the bolts are fully seated.

When the area is dry, replace the bolts and washers.

Turn off the water valve, then flush and wait for all the water to drain from the tank.

Lubricate the new washers and bolts. Clean and dry the area, then install them.

Screws are tightened with a screwdriver. A screwdriver is a tool used to tighten screws. Check for any leakage before tightening the screws more.


In conclusion, the toilet tank will be the most likely place to have a leak. The next most common place is the flapper valve. If you find that your toilet is leaking, you should first check the toilet tank. If it’s not leaking from the tank, you should check the flapper valve.we are discussing about Toilet Tank Leaking From Bolts-Causes & Fixes. This is a very common problem that most of the people face while using toilet.


1. What causes toilet tank leaking from bolts?

There are many reasons why toilet tank leaking from bolts can happen. One reason is that the tank is made of thin material and is not strong enough. Another reason is that the tank is made of plastic and the bolts are made of metal.

2. How can I fix toilet tank leaking from bolts?

There are several ways to fix toilet tank leaking from bolts. The first way is to replace the bolts with stainless steel bolts. The second way is to use a new tank. The third way is to add a washer to the bolt.

3. What’s the best way to repair toilet tank leaking from bolts?

The best way to repair toilet tank leaking from bolts is to call a plumber to fix the problem.

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