Easy Guide: Replacing Your Back-To-Wall Toilet Seat

how to change toilet seat on back to wall pan

Changing a back-to-wall toilet seat is a straightforward process that can be done at home with relative ease. It is important to ensure that the toilet seat is fitted and secured properly to guarantee comfort and stability. This guide will take you through the process step-by-step, from preparing the toilet pan to inserting the fixings and final adjustments.

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Removing the old toilet seat

Start by cleaning the surface of the toilet pan, removing any debris or dirt from the fixing holes. This step is crucial for a smooth installation process and will help ensure the new seat fits securely. Once the pan is clean, locate the screws or bolts holding the old seat in place. Depending on your toilet type, these may be at the back of the toilet or underneath the pan. For back-to-wall pans, you may need to pull the toilet away from the wall to access the bolts.

If you have a top-fixing toilet seat, the removal process is relatively straightforward. Simply unscrew the old toilet seat screws, and the seat should lift away from the pan. Be careful, as the screws may fall down inside the pan and will need to be retrieved. If your toilet has plastic hooks instead of screws, you may need to cut the hooks with a tool like a hacksaw to remove the old seat.

For bottom-fixing toilet seats, the process can be more challenging, especially if access to the underside of the pan is restricted. Try leveraging the metal plate up while slowly unscrewing the bolt. If the bolt is rusted or difficult to access, you may need to use an oscillating multi-tool to cut the bolt.

In some cases, the screw type bolt for the toilet seat may be like an expanded wall anchor on the inside, making it challenging to access. In such cases, try to force the anchor inside to grip against the underside of the bowl, allowing the screw to unloosen itself. Once you have successfully removed the old screws or bolts, you can discard the old seat and prepare for installing the new one.

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Choosing the right fixings

Top Fixings

Top fixings are inserted from the top of the pan, making them a straightforward option for installation and removal. They are particularly useful for back-to-wall toilets where access to the underside of the pan is limited or restricted. Top-fixing brackets are available, where the fixing is dropped through the top, and the bottom fixing expands as you tighten it.

Bottom Fixings

Bottom fixings are inserted from underneath the pan and typically provide a more secure attachment. However, they can be more challenging to install, especially if access to the underside of the pan is restricted. This type of fixing might require removing the toilet from the wall to gain access to the screws or bolts.

Quick-Release Fixings

Quick-release fixings are a convenient option as they allow for easy removal of the seat for cleaning and maintenance. This type of fixing is gaining popularity due to its practicality.

When selecting a new toilet seat, it is important to consider the distance between the fixing holes on the pan and the amount of adjustment available. This will ensure that the seat reaches the front of the pan comfortably and is positioned correctly for a stable and comfortable fit.

Toilet seats typically have either screws or bolts for fixings. If the existing screws are rusted or damaged, you can purchase a toilet seat fixings kit to replace them.

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Preparing the toilet pan

Before you begin, ensure you have all the necessary tools and materials. Start by cleaning the surface of the toilet pan where the new seat will be installed. Remove any debris from the fixing holes to ensure a smooth installation process. Check for any rust or damage, and replace any affected parts with a toilet seat fixings kit, available from most hardware stores or online.

The next step is to position the new seat on the pan, aligning the fixing holes. Ensure the seat is centred and positioned correctly for comfortable use. Check that the seat is level and that the support bumps are in direct contact with the pan to prevent wobbling. If the hinges are too far back, the seat or lid will fall closed instead of resting against the cistern when open. If it's too far forward, you'll end up sitting uncomfortably too far back on the toilet.

Now, insert the bolts through the fixing holes. At this stage, only tighten them loosely to allow for final adjustments. Check the position of the seat and make any necessary adjustments before fully tightening the bolts. Be careful not to over-tighten, as this can lead to stripped threads on plastic nuts, causing a wobbly toilet seat.

If your toilet has concealed bolts, you may need to pull the toilet away from the wall to access them. Alternatively, look for top-fixing brackets where the fixing drops through the top and expands the bottom fixing as you tighten it. This type of fixing is ideal for back-to-wall toilets with limited access to the underside of the pan.

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Positioning the new seat

Clean the Surface:

Start by cleaning the surface of the toilet pan where the new seat will be installed. Use a mild detergent or cleaning solution to remove any dirt, dust, or debris. Ensure that the fixing holes are free of any debris to ensure a smooth installation process.

Place the New Seat:

Position the new toilet seat on the pan, carefully aligning the fixing holes. Ensure that the seat is centred and positioned correctly for comfortable use. Check that the support bumps on the seat are in direct contact with the pan to prevent any wobbling. Adjust the seat until you find the perfect position that feels comfortable and secure.

Insert the Bolts:

With the new seat in place, insert the bolts through the fixing holes. Use washers to protect the ceramic surface of the pan from scratches. Initially, tighten the bolts loosely to allow for final adjustments before fully securing the seat.

Adjust the Hinges:

Before fully tightening the bolts, check the position of the hinges. If the hinges are too far back, the seat or lid may fall closed instead of resting against the cistern when open. If they're too far forward, you may end up sitting uncomfortably too far back on the toilet. Adjust the position of the screw that passes through the hinge plate to get it just right.

Tighten the Bolts:

Once you're happy with the position and hinge adjustment, it's time to tighten the bolts. Use a screwdriver or wrench to tighten the bolts, but be careful not to over-tighten them. Over-tightening can lead to stripped threads on plastic nuts, resulting in a wobbly toilet seat.

Final Touches:

If your new seat comes with plastic covers to hide the fixings, push them into place for a neat finish. Now you can enjoy the comfort and stability of your new toilet seat! Remember, proper fitting and securing of your back-to-wall toilet seat are essential to ensure both functionality and aesthetic appeal in your bathroom.

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Securing the new seat

Prepare the Toilet Pan

Start by cleaning the surface of the toilet pan where the new seat will be installed. Ensure that the fixing holes are free of debris and build-up to facilitate a smooth installation process.

Position the New Seat

Place the new toilet seat on the pan, carefully aligning the fixing holes. Ensure that the seat is centred and positioned correctly for comfortable use. Check that the support bumps on the seat are in direct contact with the pan to prevent any wobbling. Adjust the position of the seat as needed.

Insert the Fixings

Insert the bolts through the fixing holes in the pan. Use washers to protect the ceramic surface from scratches. Screw the nuts or wingnuts in place with your fingers, but do not tighten them excessively at this stage.

Adjust and Tighten the Bolts

Before fully tightening the bolts, check the position of the seat once more. Ensure the hinges are correctly aligned to prevent the seat or lid from falling closed or sitting too far back. Adjust the position by moving the screw through the hinge plate. Finally, tighten the bolts, but be careful not to over-tighten, as this can lead to stripped threads on plastic nuts, causing a wobbly seat.

Finishing Touches

If your new toilet seat comes with plastic covers to conceal the fixings, push them into place for a neat finish. You can now enjoy your newly installed toilet seat!

Remember that the specific steps may vary depending on the type of fixings your toilet seat uses. Top fixings, inserted from the top of the pan, are commonly used for back-to-wall toilets, while bottom fixings, inserted from underneath, may be more challenging to access but provide a more secure attachment. Always refer to the instructions provided with your new toilet seat for the most accurate guidance.

Frequently asked questions

If there is no access to the underside of the toilet bowl, you can try leveraging the metal plate up while slowly unscrewing the bolt. This way, you can force the anchor inside to grip against the underside of the bowl and allow the screw to unloosen.

If the screw is like an expanded wall anchor, you can try to force it upwards to stop it from turning. This will allow you to unscrew the bolt.

If you can't access the bolts because the toilet is wall-mounted, you may need to pull the toilet away from the wall to access the concealed bolts. Alternatively, you can buy a top mount toilet seat, which doesn't require access to the underside of the pan.

Top fixings are easier to install and remove as they are inserted from the top of the pan. Bottom fixings provide a more secure attachment but are harder to install, especially if access is restricted. Quick-release fixings are also a good option as they allow for easy removal of the seat for cleaning and maintenance.

First, clean the surface where the seat will be installed and ensure the fixing holes are free of debris. Position the seat, aligning the fixing holes, and insert the bolts. Tighten them loosely to allow for final adjustments. Once you are happy with the position, tighten the bolts, but not too tight, to avoid over-tightening.

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