Why Do Toilet Seats Crack? (Causes & Solutions)

While most toilets are generally designed to hold between 500 to 1000 pounds depending on whether they are wall-mounted or floor-mounted toilet seats, the design of most toilet seats might not be able to withstand all that weight.

Toilet seats are designed to hold an average of 300 pounds or approximately 136 kgs. Subjecting the toilet seat to excessive weight can contribute to cracking or distortion of the shape of the toilet seat.

Generally, toilet seats will crack because of excessive weight that is over the 300 pounds mark, excessive movement while sitting on the toilet seat as this adds pressure to certain areas of the toilet seat, and dropping things like hair driers on the toilet seat.

If you often move around on lean towards one direction when sitting on your toilet seat, you are likely to notice a few cracks on one side of your toilet seat after using it for some years.

Note that, the risk of toilet seat cracks is also dependent on the type of material used in making the toilet seat. Continue reading to learn about how you can fix a cracked toilet seat and tips that you can use to prevent the formation of more cracks.

How to Fix Cracked Toilet Seats

Fixing a toilet seat is a cost-effective method that will eliminate the need to buy a new toilet seat. To fix your toilet seat, follow these simple steps.
You will need:

  • A sponge and a cleaning detergent.
  • Cleaning gloves.
  • Some old newspapers.
  • Wood glue for wooden toilet seats.
  • Two-part epoxy glue (such as the Gorilla 2 part epoxy glue) for plastic toilets

Step 1: Detaching

Remove the toilet seat from the toilet bowl by unscrewing the bolts from the hinges holding the toilet seat.

Step 2: Cleaning

Clean the toilet seat using a sponge and mild detergent to remove any dirt that might be stuck on the toilet seat.

Avoid using an abrasive brush to clean the toilet seat or excessive pressure as that could worsen the crack on the seat.

Dry the toilet seat well using a rag or a dry sponge.

Step 3: Repair

Wooden Toilet Seat

If you are repairing a wooden toilet seat, start by prying the crack open to create a small space where you will pour the glue. This approach is suitable for a hairline crack.

If you are dealing with a larger crack, simply pour the wood glue into the crack. It is more suitable to choose a wood glue that comes with a nozzle as this will makes it easy to get the glue in the tiny crack.

Ensure that you fill the entire inner part of the crack with glue so that it will bond well to the wood. You can press opposite sides of the area where the crack has occurred for a few minutes to help the glue hold on to the wood well.

Alternatively, you can use a bar clamp to squeeze the wood and ensure that the crack on the toilet seat will be sealed perfectly. After placing the bar clamp, ensure that you wipe off any excess glue that might have accumulated on the outer part of the crack.

Plastic Toilet Seat

If you are repairing a plastic toilet seat, you can use fix it using two-part epoxy glue. You would need to ensure that the toilet seat is clean and dry first before applying the glue. Mix the two-part epoxy glue and spread it well in the crack. Ensure that the glue gets inside the crack for proper bonding.

You can use a bar clamp to secure the area of the toilet seat which was cracked. Leave the epoxy overnight to cure before placing it back on the toilet and using it.


Best Glue for Broken Toilet Seats

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Tips on How to Prevent Toilet Seats from Cracking

Try to avoid dropping things on the toilet seat, while it is nearly impossible to predict accidents, you can try to avoid dropping things on your toilet seat by using your hairdryer far from the toilet.

If you have shelves on top of your toilet. Avoid placing heavy things on shelves as that increases their likelihood of falling on the toilet seat and cracking it.

Cleaning and Drying

If your toilet seat is made of wood ensure that you dry the seat well after cleaning it. Water breaks down wood and rots it. It also promotes the formation of mold, which can also affect the quality of the wood.

The effects of water on wood promote deterioration, which makes it easy for the wood to crack under pressure. As such, when you clean your toilet seat, ensure that you dry it well.

You should also keep the toilet lid open after cleaning to ensure that the hinges air dry. This will further reduce the risks of water damage and increase the longevity of your toilet seat.

Ensure that the bolts are well secured
You should ensure that the bolts are well secured so that the toilet seat does not keep shifting when you sit on it. A toilet seat that is loosely attached to the toilet bowl has a higher likelihood of cracking.

Can you Repair a Broken Toilet Seat?

Yes. You can repair a broken toilet seat if the part that has broken off is fairly small and can be held with two-part epoxy glue or wood glue for wooden toilet seats.

However, you should note that the risk of the toilet seat breaking again after a repair is high, especially in cases where more than one person is using the toilet.

If the broken piece is quite large, it is better to invest in a new toilet seat as opposed to trying to repair the broken one.

Best Glue to Seal Broken Toilet Seat

Gorilla Two-part Epoxy Glue

glue for cracked toilet seats

The best glue to seal a broken toilet seat depends on the type of toilet seat that you are using. If you are using a plastic or wooden toilet seat, the gorilla two-part epoxy glue is a great option as it bonds wood and thick plastics well.

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If you notice a small crack on your toilet seat, it is advisable to repair it as soon as possible. Cracks from a point of weakness. If you do not repair the crack in time, the crack might increase and you will need to replace the toilet seat.

Read: Hard Water Stain Resistant Toilet Seats

Do toilet seats have a set weight limit?

Toilet seats have weight limits that range from 300 pounds to 400 pounds. If you exceed the weight limit, you are more likely to stress the seat, making it prone to breakages, loose toilet seat hinges, and cracks in the bumper grips.

Why do wooden toilet seats tend to crack?

Wooden toilet seats are prone to cracking when exposed to excessive humidity, weights greater than 400 pounds, or moisture. The majority of wooden toilet seats are made in such a way that the wood is molded incomplete steam to produce an elongated or round shape.

So, if the seat is exposed to moisture or high humidity, it tends to absorb the moisture, softening the wooden structure of the toilet seat, so that when pressure is applied when even one person is sitting on the toilet seat, it easily cracks and can even break into pieces.

Which is better: a wooden or plastic toilet seat?

Although it is obvious that this is a matter of personal opinion, both plastic and wooden toilet seats have fantastic functionalities that improve the user experience when using the toilet.

Although wooden seats are more expensive than plastic seats, this is due to the fact that wooden seats are more durable, classy, and comfy. Plastic seats are less expensive, more common, and easier to clean, but they have their own problems, such as being prone to hard water and urine stains.

Both wooden and plastic toilet seats have a slow closure mechanism, which helps the toilet lid close in such a way that it does not smash on the toilet seat after use; all that is required is a gentle touch and the lid closes slowly on its own.

If you’re on a budget, a plastic toilet seat with current features would be a fantastic choice, as these plastic toilet seats provide more than just a user experience and can endure for more than 5 years without needing to be replaced.

And if you are the type of person who is seeking for style, durability, and functionality, then a wooden toilet seat is the way to go because most wooden toilet seats are meticulously made to match most bathroom interior decor, are pleasant, sturdy, and have fantastic functionalities.

The best way to know if your toilet seat is cracked

Some noticeable areas to keep an eye on are the seat hinges, which tend to loosen and crack, beneath the toilet seat on the bumper grip, which absorbs the majority of the pressure when seated on the toilet seat, and on top of the toilet seat surface, which is easily visible.

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