How to Fix a Toilet Seat that Keeps Falling Off – Complete Guide

A toilet is one of the most durable parts of your home plumbing system. I would guess, however, that there have never been any homes without problems.

Problems such as a runny toilet, a clogged toilet, and a leaky tank are some of the most common problems with your toilet.

Another common problem is a toilet seat that keeps falling. This can be a real nuisance, but fixing this problem is not difficult.

Luckily, you can fix most of the plumbing problems pretty easily instead of calling a plumber and making him your new best friend.

In case you are experiencing this kind of problem, we have a detailed article on how to fix a falling toilet lid.

How Do you Fix a Toilet Seat that Keeps Falling off?

1. Seat Placement Is Too Far Back In the Direction of the Tank

The most common reason for your toilet seat not staying up is the seat could have been placed too far back in the tank’s direction. When a brand-new toilet is installed, the toilet seat angle is usually set beyond 90 degrees to the bowl.

The toilet seat needs to rest comfortably on the toilet tank after installation. If this angle is less than 90 degrees, the toilet seat will keep falling for whatever reason.

If you are in such a situation, here’s how to fix this problem. What you need: a screwdriver and pliers.

The seat is attached to two bolts at its rear that can be covered with nuts underneath. The nuts need to be loosened and removed, which may or may not be a problem depending on the age and condition of the toilet.

When turning nuts with the pliers, be careful not to let the pliers slip and hit the toilet or something else. If you feel this might occur, protect areas close to the workspace.

Unscrew the seat, and move it forward as far as you can away from the tank. Then screw it back. This should give the seat that extra length and angle to stay up.

2. The Toilet Seat May Be Too Thick/Heavy

how to fix a toilet seat that keeps moving

Another reason could be the toilet seat could be too thick/heavy. This may happen if you have the wrong toilet seat and lid combination.

As a result, the seat will not be able to support its weight. This will result in the toilet seat falling as it sits at less than 90 degrees.

Another reason your toilet seat cover might be heavier than the toilet seat. This adds that extra weight which shifts the balance of the toilet seat, making it fall every time.

Picking the new seat and ensuring you get the right size should solve this.

Remove the old seat, and take it to your local hardware or home improvement store to match it up. There are all kinds of varieties and finding one suitable for you should be easy.

If not, your seat cover will be too heavy, and you’ll keep having this problem.

Read:- Toilet Seat that Doesn’t Move

3. The Toilet Is Not Level

Sometimes, your toilet may have been installed incorrectly and is not level, causing the seat to keep falling. Close your toilet lid, grab a level, and place it on the closed toilet lid to test this.

If you don’t have a level, take your smartphone; go to the apps store (play store or apple store). Download a level/measuring app, then use your smartphone as a level, as stated above.

If your level shows that your toilet is slanting either to the front or back, you will need to buy toilet wedges. They are easy to install and inexpensive to purchase.

These wedges look like tiny door stops. They are placed by sliding them under the base of your toilet to make it level, depending on which side is slanting.

Since your toilet seat does not sit upright, you must place these wedges at the front of the toilet’s base. It counters that shift and levels the toilet. After this is done, take your level and measure. If it is level, check with the toilet seat and ensure it sits upright.

4. A Cracked or Broken Seat

broken toilet seat hinges

cracked or broken toilet seat can be a nuisance and cause the seat not to hold up properly. Changing your toilet seat is not a very difficult task.

You can find different styles of replacement seats on the market. All you have to do is pick one that suits you, and you are on your way.

Be careful to select the right size. There are only two standard sizes; the elongated and the round, so this should not be a problem.

All you need to do is lift the toilet seat and remove the two nuts on the hinges that hold the seat on the toilet bowl. After removing the nuts, you can lift the seat off.

Use some oil to loosen if the nuts are rusted or corroded and not coming off easily. After removing the seat, place the new seat on the toilet and screw the nuts.

If you are replacing the toilet, the steps to replace the old seat are simple. You will begin by scraping the old wax gasket.

For this type of work, a putty knife would be your most appropriate choice. You’llYou’ll start by removing the old bolts, and scraping the flange clean will work to prevent any leaks at the base of the bowl.

Level the floor flange with the floor at the bottom. A finished flooring should be used if the floor doesn’t run beneath the toilet. This makes the screws that hold the floor flange tightened into place.

To ensure that all your floor bolts line up with the center of the drainpipe, set them in plumber’s putty before inserting them through the flange.

Turn your new toilet bowl upside down and attach the wax gasket over the horn (waste outlet) at the bottom of the bowl. You will use the plumber’s putty to seal up any loose ends, especially as you lower the bowl in place over the flange using the bolts as guidelines.

Once on the ground, carefully press down while giving a twist until you feel the bowl being pushed into the wax ring. This will get you a good seal.

Ensure that the wax ring isn’t too cold otherwise, it’ll be too hard for the toilet bowl to sit properly. This could result in the same problem you’re trying to fix. You can add shims if the bowl isn’t level and not aligned with the wall.

Then hand tighten the nuts and washers onto the bolts. For a firm fit, you might use a rubber tank cushion and add it to the rear of the bowl.

Then fit the rubber gasket onto the flush valve opening on the bottom. Position the tank over the bowl, tighten the nuts and washers onto the mounting bolts and the hold-down bolts at the base with an adjustable wrench.

During the entire process, you should constantly use a level to ensure that the toilet bowl is still level throughout the process.

Using a plumber’s putty (or silicone caulk), seal the base of the bowl. After filling the decorative caps with the plumber’s putty and putting them over the head of the bolts, you should be nearly finished. Finally, cut the end out of your supply line stub and attach a shut-off valve.

This valve will connect to the flexible tubing. Connect the tubing to the bottom of the tank, where a supply stub out will be visible.

5. Misuse of the Toilet

Repeatedly slamming the toilet seat may cause a lot of damage to the seat itself and the hinges and screws also. If you live with feisty kids who do this, getting a toilet seat that has slow-close hinges is the wise way to go.

These hinges prevent anyone from slamming the toilet seat, preventing any damage to the seat.

6. Installation of Rubber Toilet Seat Washers

The screws in the seat cover may become loose, due to misuse or just the daily use of it. If you notice this issue, you should consider purchasing washers.

They are not expensive, and they are easy to install. Then, unscrew the toilet seat and lid off. Place the washers between the screws and the toilet seats. This will give the seat more support and make it last longer.

7. Cleaning the Screw Hinge

Over time, residue may build up under the screw hinges. To fix this, you must remove the screws using the required screwdriver. If the screws keep spinning, use pliers to hold the nuts from the other side.

This should untighten the screws. After removing the seat, clean where the screws were, using a clean cloth.

Clean thoroughly to get rid of all the dust that gathered to allow the screws to move better after reinstalling the seat cover.

Every toilet has spacers on the underside. The spacers help prevent your toilet seat from resting on the actual toilet bowl. Having the wrong toilet seat size can cause these spacers to slip.

If you cannot make out the size of your toilet seat, take a photo of your toilet without the seat.

Visit a hardware store, and they will help you figure that out. Just as important as the exact size of a toilet is getting the right toilet seat for it. This is to avoid being uncomfortable when using your toilet.

8. A Wobbly Or Lose Toilet Seat

A wobbly or loose toilet seat could be the reason it keeps falling. It’s critical that you fix a loose or wobbly toilet seat because it’s uncomfortable and sometimes aggravating and can prove very dangerous.

Fixing this problem is just as easy as a simple do-it-yourself operation for those handy with tools. The movement of the toilet seat is due to the loose screws that are holding the toilet seat.

The screws are located under the plastic caps that attach to the porcelain commode in the back section of the toilet.

Start by prying the caps off to expose the screws. Using a flathead screwdriver. The screws can be either metal or plastic.

Place the seat at the center, then tighten each screw by twisting the screwdriver clockwise. You can use your hand or a pair of pliers to hold the nut in place to tighten it. Do the same operation on both sides of the toilet.

Afterward, wiggle the seat to see if it is sufficiently tight. Be careful not to overtighten the screws to prevent stripping the threads on the screws. Let the screws be snug, but don’t tighten them too much.

Finally, close the caps and continue to use your toilet seat.


Toilet seats that keep failing are annoying and, to some extent, dangerous. It’s important to ensure that you, and any visitors to your bathroom, are safe and comfortable.

This nerve-racking problem needs to be resolved, and you should ensure you have the right tools and information about the problem with your toilet seat. The operation is simple, and as you have discovered, you don’t even need to call a plumber!

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