How To Install A One-Piece Toilet: Our Quick & Easy Guide For DIYers

Last Updated on January 14, 2021 by Lynda Stevens


Do you find toilet installation intimidating? Most people do. It’s not exactly something that we tackle every day, so it’s no surprise that the average handyman or DIY-er doesn’t have toilet installation under his/her belt.

But the thing is, it’s actually fairly easy and can be done even without the help of a professional. Many toilets today even come with easy installation and complete instructions on how you can hook up your toilet, so that takes care of most of the challenge for you. 

Why Should You Choose One-Piece Toilets Over Two-Piece Ones? 

One-piece toilets often come with attractive designs. Many people are lured by the modern aesthetic of these toilets. Additionally, there are fewer crevices and nooks in the one-piece toilet that is a hub for dirt and whatnot. If you hate cleaning, you will like one-piece toilets more simply because they are not as difficult to clean.

We also like how sturdy one-piece toilets are compared to their two-piece counterparts. There is no hinge that can break in case someone heavy sits on the toilet or leans back on it. Everything is solidly made, so you can lean back and sit down and not worry that the hinge will break.  

How to Install a One-Piece Toilet 

Follow these steps for easier one-piece toilet installation:

Step 1: Remove your old toilet first. 

Of course, the process won’t start if you still have the old toilet. Carefully remove the old toilet, making sure to protect your flooring if you don’t plan on changing it. Clean up any spills or excess water on the floor. 

Step 2: Get rid of the wax ring.

The old wax ring should be replaced with a new one, so that your toilet won’t leak. Use a scraping tool to remove as much of the old wax ring as you can. 

Step 3: Check to see if there are slots for the bolts of the new toilet.

There should be holes where the bolts will go. If you don’t have this, use a driller to drill holes to your floor just right next to the toilet flange. This will hold the toilet down. Remove any excess material to prevent it from getting in the wax ring.

Step 4: Install the wax ring. 

In some cases, the floors are not even with the toilet flange. If this is your problem, you can simply get a thicker wax ring. Get someone else to hold the toilet so you can access the bottom part of the toilet. Remove the wax ring from its packaging and stick it on the toilet, making sure it is centered on the toilet’s drain hole. If the fit isn’t right, you can simply rotate it until the fit feels right. 

Step 5: Lay down your new toilet. 

Again, get another person to help you out. Most one-piece toilets are heavy, so it’s good to have someone else help you out. Make sure the bolts line up on the holes you made on the floor. Bolt it down with the nut and washer included in your purchase. This might take some time because most one-piece toilets have skirt designs that make it more difficult to see under the toilet. There are also toilets that have a bolt access on the side. They are concealed by a small rectangle door. Just remove that and you should be able to access the nuts and bolts. 

Step 6: Install the flush. 

One-piece toilets with dual flush mechanisms are great because they allow you to choose between a full flush and a half flush. If yours came with a dual flush mechanism, insert the plastic tubes included in it in the tank lid. This usually comes in black and blue colors. 

Step 7: Now install the toilet seat.

Some toilets do not come with a toilet seat yet, so make sure you check what you are buying. Ask if it comes with a toilet seat, otherwise, you will have to buy one that fits your toilet. 

Toilet seats come with plastic screws, so put them in place. Insert the black-colored washer on your toilet seat’s hinge. Insert the hinge’s stem to the correct hole of the seat. 

There you go! You are now ready to use your toilet. 

How to Keep Your Toilet Clean

These are some effective strategies on how to keep your toilet clean:

1. Use a self-cleaning kit. 

Self-cleaning kits come in many forms. There are toilet bowl cleaners and deodorizers that you can just drop in the tank. It will automatically dissolve in the tank and every time you flush, the water that will be used will be infused with cleaners to remove germs and particles from the bowl and keep it sparkling clean.

There are also cartridges that you install in the tank. Every time you flush, it keeps the bowl clean for you. This is better than cleaning tablets because it can last for as long as 3 months.

You can also apply a cleaning gel on a corner of the bowl. Every time you flush, the water coming out of the bowl will wash through the cleaning gel, thereby effectively getting rid of unwanted residues. 

2. Use a disinfecting wipe to clean the toilet seat. 

After every use, get a piece of disinfecting wipe and wipe down the toilet seat and the toilet seat cover. That should keep your toilet not just clean but also sanitary. 

3. Occasionally wipe down the exterior of the toilet. 

Make sure there are no debris, dirt and cobwebs sticking to the exterior of the toilet, especially the back of the toilet where there are usually groves. An occasionally scrub down might also be necessary. 

You can also put a gentle cleaning solution in a spray bottle and spray the solution all over the exterior of the toilet. Leave it there overnight and wash or wipe it down the next day. 


Finding the best one-piece toilet is also essential. Make sure you check out our recommended toilets and our comprehensive reviews on how to buy one. 

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