Toilet Seat

A cracked, wobbly, or faded toilet seat can be a source of discomfort and frustration. I've been there, so I know how it feels. I felt reluctant to go for a replacement due to high labour costs. But to my surprise, I found it to be a great DIY project that can be completed in no time and at minimal cost. That means no need to call a plumber or spend a lot of money on professional installation. How? I’ll explain in this blog.

Gathering Your Tools and Supplies

Here we have a list of tools and materials you may need for a new toilet seat installation. 

  • New toilet seat (double-check size and shape)
  • Adjustable wrench or pliers
  • Flathead screwdriver
  • Penetrating oil (if bolts are rusty or difficult to remove)
  • Gloves (optional)
  • Cleaning supplies (to wipe down the toilet area)

Having all these items available? You are ready for DIY toilet seat installation

Step-By-Step Guide to Replacing a Toilet Seat

Step 1: Measure Your Toilet Bowl

Before you start it is essential to measure the toilet bowl before you buy a new toilet seat. This will ensure a perfect fit and avoid the hassle of returning an incorrect item. 

  • Measure the distance between the two bolt holes. Most toilets have a standard spacing of about 5.5 inches. It will give an idea what toilet size to look for.
  • You should also measure from mid point of the bolt holes to the front edge of the bowl to determine the shape if it’s round, elongated, or D-shaped. 
  • Confirm the measurements with the product dimensions on the seat packaging.

Step 2: Remove the Old Toilet Seat

Once you have the new toilet seat, you can begin the installation process. Start by removing the existing toilet seat. It may be straight forward and quick or require some efforts depending on the condition of the bolts and nuts holding it in place. 

  • There are toilet seat bolts located at the back usually covered by plastic caps.
  • Use the flathead screwdriver to expose the bolts. 
  • Turn the bolts anti clockwise while holding the nuts steady using the adjustable wrench or plier. 
  • Rusty bolts can stuck, making it hard to unscrew. Use small amount of penetrating oil and let it sit for few minutes to make it loose. Be careful as applying excessive force can cause damage. 
  • Use an adjustable wrench or pliers to hold the nuts steady while you turn the bolts counterclockwise with the screwdriver. Be careful, as excessive force can cause damage.
  • Once loosened, lift off the old seat and set it aside for disposal.

Step 3: Clean the Area

Clean the area before fitting a new toilet seat. It will ensure the new seat sits evenly and securely. 

  • Wipe down the area around the bold holes with a soft cloth. You may use disinfect or a household cleaner. 
  • Focus on removing rust or residue that may interfere with the installation. 
  • Completely dry the area thoroughly with a clean cloth to avoid moisture build-ups under the new seat.

Step 4: Install the New Toilet Seat

Once the toilet bowl is clean and prepared, you are now ready to install the new toilet seat.

  • Position the new seat over the toilet bowl. Ensure its alignment with bolt holes on toilet.
  • Insert the bolts that came with the new seat through the holes and secure them tight with the nut’s underneath.
  • You will need to use the screwdriver to tighten the bolts clockwise. Ensure they’re snug not over tightened, as this could crack the toilet seat or bowl. 

Step 5: Test and Adjust

Your new toilet seat is now in place. Take a moment to test it and ensure everything is aligned.  

  • Test by opening and closing: The lid and seat to confirm that it moves smoothly without obstruction.
  • Ensure the seat doesn’t wobble or shift when sitting down.
  • Check all the bolts once again, tighten if necessary but avoid over tightening them. 

Troubleshooting Common Issues

While the toilet seat installation process is straight forward, you may still encounter some common issues.  

1. Stuck Bolts

  • If the bold it stuck in the hole, use penetrating oil and let it sit for about 15 minutes. If it’s still stick, try gently tapping the bolt with a hammer to loosen it. 
  • In some case, penetrating oil may not work requiring you use a mini hacksaw or bolt cutters to remove the stubborn bolts. However, you should be careful to avoid damaging the bowl. 

2. Wobbly Seat After Installation

  • A wobbly seat after an installation may be a sign something wrong with bolts tightening. You should check that whether the bolts are tightened evenly and secure. Sometimes, loosening and then re-tightening can help align everything properly. 
  • You may use rubber washer in bolts for extra grip and stability for the toilet. 

3.Uneven Fit

  • If you notice unevenly fit toilet seat, then double check the alignment of the bolts. A slightly off-centre seat requires the bolts adjustment. 

Extra Tips for Replacing a Toilet Seat

  1. Upgrading to a Soft-Close Lid: Most modern toilets come with soft close seats. These are comparatively more delicate to install. You will need to follow the same method but ensure not use excessive force on the hinges during the installation. 
  2. Using Quick-Release Mechanisms: If you are installing a soft close seat then they may have quick release button allowing seats to be fully detached for cleaning. Don’t forget to follow manufacturer instructions for any additional steps.
  3. Ensuring Compatibility with Bidet Attachments: If you plan to add a bidet attachment, choose a compatible toilet seat. Bidets can often be paired with a standard seat, but some may require a specialized model.
  4. Maintenance Tips for Your New Toilet Seat

After a successful installation of your new toilet seat, there are few maintenance tips to keep it in pristine condition. 

  • Regular cleaning is important: Use a non-abrasive cleaner to avoid scratching the surface. Simply wipe down the seat, lid and surrounding area every week. 
  • Harsh chemicals may damage the toilet material: Always use gentle bathroom cleaner. A simple mixture of vinegar and lemon juice in water may be enough to keep clean. 
  • Inspect the bolts ever few months as they may loosen over time. 
  • Applying lubricant on soft close hinges will keep them operational smoothly.

Frequently Asked Questions


Here we have frequently asked questions on DIY replacing a toilet seat. 

How Long does it Take to Replace a Toilet Seat?

Replacing a toilet seat may be completed in about 15 minutes. However, if it is bit difficult to remove existing toilet seat due to stuck bolts or any other problem, around 30 minutes would be enough. 

Can I Reuse the Old Bolts and Nuts?

You better not use new bolts and nuts of existing toilet. They may be worn and could affect stability of the seat if used. We highly recommend using nuts and bolts that come with a new seat.

How to Replace a Toilet Seat?

To replace a toilet seat, you will first need to remove the existing one. Simply loosen the bolts underneath and detach the existing seat. Clean the bowl area and align the new seat with toilet holes. Once aligned, tighten it with bolts provided with the toilet seats.

How do You Measure a Toilet Seat?

You will need to measure toilet length and width for the new seat. First measure the bowl length from bolt holes to the front edge (usually 16.5" for round, 18.5" for elongated seats). Width can be measured from the bowl's widest point and check that bolt holes are 5.5". These measurements will help you choose the right toilet seat size and shape. 

Are Toilet Seats Universal?

While most toilet seats are designed to fit standard sizes, they are not entirely universal. You should order a toilet seat according to the shape. Some brand specific toilet models may differ from standard sizes and design. Few may have different mounting mechanisms. Therefore, it is important to measure the toilet and know the type of toilet seat you should order. If you are sure that it’s a standard toilet then knowing the shape may give you an idea of the type of toilet seat you may need. 

Ending Thoughts

Replacing a toilet seat might seem like a hassle, but it's actually a simple and affordable DIY project. You don’t need special tools or expensive professional help; just a little time and a few basic supplies are sufficient. So, say goodbye to the old seat and enjoy a fresh, comfortable upgrade in no time.