Toilet Installation Guide

By Emma
Last updated 4th April 2023 - Reading time: 22 mins

Installing a toilet sounds difficult as you think there will be lots of connections to make sure your toilet works properly. However, the process is easy depending on your new toilet and whether you follow what you are meant to do.

This article will provide everything you need to know when installing a toilet DIY or if you want a tradesperson to come out and help you install your toilet.

Therefore, everything such as the cost, labour prices, DIY, the pros and cons of installing a toilet, different design ideas and what to look for when hiring a tradesperson for help. All of this information will be in this article!

installing toilet

Toilets can be fragile and sometimes be awkward as the way they are built can be confusing.

Therefore, if you are looking at installing it yourself, you need to know what you are doing as you don't want to break it and need to replace your new toilet straight away.

This article will also help you know what to do if you are doing a toilet installation on a budget, as the price of having to install it can sometimes be expensive, so if you want a cheap toilet installation, this article will give you all the information you need to do so!

What is Toilet Installation?

Toilet installation is when you need to put a brand-new toilet in your home. So, whether that means you have broken your old toilet and need to remove it to replace it with a new one, or you have just moved in your brand-new home, and a toilet is not installed.

As toilets are important for humans and every household has a toilet, knowing how to install or where to go to get a new toilet is very important because you will need a new toilet at some point in your life.

Knowing when to get a new toilet can be stressful as toilet repairs can happen a lot; however, multiple signs tell you that you should get a new toilet.

For example, if your toilet is constantly clogging, you should replace your current toilet with a more efficient and effective commode if you don't want to lose the water-saving benefits of a low-flush toilet.

toilet installation

Or if it begins to wobble, then it could just be a case of loose screws. Tightening the bolts and making sure everything is in the right place is simple for a plumber.

However, wobbling can indicate a more serious condition. It's possible that the floor beneath the toilet is deteriorating or water damaged, meaning it's time for a new toilet.

The average toilet has a lifespan of 10-15 years on average. On the other hand, they typically need to be replaced after 25 years of use if they have lasted longer than average.

Some say that the porcelain toilet has a considerably longer, even infinite, lifespan and that only the internal components need to be repaired or replaced.

Due to this, toilet installation is also popular because most toilets end up having problems such as leaks, not flushing properly, flush handles breaking, and weird smells; therefore, in some cases, people just decide to buy a new toilet and install it themselves rather than ringing a plumber to solve the problem.

Types of Toilets

Here are the different types of toilet available to choose from:

Duel-Flushed Toilets

These toilets have a half flush and a full flush option on the flush button, which is where the name comes from. We utilise the half flush for liquid garbage and the full flush for solid waste.

duel flush toilet

Water efficiency is one of the most significant advantages of a dual-flush toilet. Although they are more expensive, they are better for the environment and your wallet in the long run.

Back-to-Back Toilets

Back-to-wall toilets are a fashionable option. They save space, are pleasing to the eye, and are easy to clean and maintain.

The toilet bowl is attached to the wall, while the cistern is concealed behind a piece of furniture or within the wall.

These toilets are cheaper and easier to instal than wall-hung toilets.

Wall Hung Toilets

These toilets are mounted on the wall and are elegant and trendy. In addition, because the water tank is built into the wall, they conserve room. These toilets can be costly and time-consuming to install.

To complete the job, you'll need to employ a qualified plumber and possibly a handyman.

The total cost of the wall-hung toilet rises as a result. It's quite simple to sterilise the unit, and it does have certain benefits.

These kinds of toilets are also classed as freestanding toilets, there is a variety of them, and although they are expensive, they are very aesthetically pleasing.

Close Coupled Toilets

Close-coupled toilets have the cistern linked to the toilet bowl, resulting in a single, streamlined unit that incorporates both vital components.

close coupled toilet

The pipes are concealed within the toilet casings, and their modest size makes them ideal for cramming into tight areas. These toilets are more expensive; however, they are very good quality, and they can last for a long time.

Gravity-Flush Toilets

When you click the flush button, water from the toilet tank falls into the bowl. The garbage is eventually pushed through the trap channel by the water.

Gravity-flush toilets are silent, contain fewer parts, and require little maintenance over time. It's no surprise that they've become a massive hit on the market.

They also barely get clogged; therefore, they barely ever need to be repaired.

High-Level Toilets

High-level toilets can provide a lovely traditional touch to your bathroom. They have a high-up on-the-wall cistern that must be strong or secured to avoid any problems.

High-level toilets have a long chrome flush pipe with a long pull chain flush for an elegant design.

Low-Level Toilets

They give your bathroom a more vintage look, like the high-level toilet. Because the cistern is installed at a lower level, the flush pipe is shorter. A traditional lever controls the flush mechanism.

low level toilet

Advantages and Disadvantages of Installing a New Toilet

When installing a new toilet, the idea seems like a long and expensive process. However, with every task comes advantages and disadvantages.

This section of the article will outline the positives of replacing your old toilet and the negative aspects.

Toilets aren't built to last forever, and they'll eventually need to be replaced when a single significant problem or a series of minor issues necessitate repairs that aren't worth the money the plumbing work will cost.

So, when your toilet constantly needs repairs, it is probably time to install a new one. However, do your research and find the best toilet for you!


  • Installing a modern standard model toilet today will lower your home's water usage by 23-46 per cent.
  • Newer ultra-low-flush and high-efficiency toilet models will need as little as 1.28 gallons each flush, lowering your annual water bills and decreasing your home's water usage.
  • Most toilets made before 1994 will take up a lot of water as a new regulation was passed in 1994 to reduce the water usage for toilets.
  • Therefore, when you replace your old toilet with a new one, it will be more up-to-date and save you money.
  • Clogs and leaks can build up in terms of maintenance costs. Problems like a damaged tank can leave a toilet completely worthless, needing replacement to restore the operation and prevent water damage to your property.
  • So, rather than wasting time and money on a broken toilet, changing the fixture is a long-term solution with a one-time expense that ensures your toilet is tailored to your needs and will perform properly for years to come.
  • Choosing a toilet that complements the style of your bathroom may transform the space, improving its appearance and potentially increasing the value of your property if you decide to sell it in the future.
  • Bathrooms with appealing designs and appealing toilets have been demonstrated to help homes sell faster and for a greater price than those with unappealing bathroom designs and unappealing toilets.
  • If you have an older toilet, you may be more likely to have a flood. Of course, you could be taking good care of your "bowl," but with time, portions may disintegrate, resulting in one of the most unsettling experiences you'll ever experience.
  • Toilets nowadays are more water-conscious but will also be equipped with the most cutting-edge plumbing technology. This will not only provide you peace of mind, but it will also keep your home dry and plumbing in good working order!


  • The price of installing a new toilet is a factor because toilets are not cheap.
  • When moving and installing your toilet, use caution. Almost all are made of vitreous China or porcelain, and if dropped, they will split or shatter.
  • A toilet has been destroyed by more than one DIYer after it was dropped by mistake. Therefore, make sure you are aware of what you are doing.
  • When removing the toilet, you can cause damage to yourself as they are heavy and awkward to pick up. Therefore, if you are doing it yourself, you will need a helper there if you need help carrying the heavy toilet.

How Much Does It Cost to Install a New Toilet?

Installing a new toilet is a common home remodelling project that can improve your comfort while also increasing the value of your home.

There are several factors to consider when considering the cost of toilet installation, such as the type of toilet you are installing, the current plumbing in your bathroom, the type of cistern you are using, and the significance of preparations.

So, this part of the article will briefly go through the average costs of toilets and will include the different types of toilets and their prices.

Toilet installation costs can vary from £100 to £1500 depending on what kind of toilet you are looking to buy. Therefore, if you are trying to save money as much as you can when looking for a new toilet then DIY might be an option to bring the new toilet installation cost down.

installing toilet

However, this is just to supply the toilet and not to install, as fitting costs range from £100-350.

On the other hand, if you are not seen as a handyman and have no experience with DIY hiring a tradesperson to install the toilet for you might be the safest and time-saving option for you.

The labour costs of hiring a plumber per hour can vary from £40 to £60, depending on your location or the job's difficulty. Or some plumbers charge per day, and that can range from £320 to £375 once again depending on where you are from or what the job consists of.

It's crucial to talk to a few different tradesmen while completing your research and acquiring toilet installation quotes from local plumbers to ensure you're getting fair and competitive prices.

It's also a good idea to request a complete breakdown of all prices, including labour and supplies, so you can compare them and see where costs differ.

Type of Installation Supply Cost Installation Cost
Close Coupled Toilet £100 £100
Hidden/Wall Hung Toilet £250 £300
Low-Level Toilet £125 £150
High-Level Toilet £150 £150
Hands-Free Toilet £1500 £400
Removing Old Toilet £75
Build the Frame £100
Adjust Water Waste £350

How to Install a Toilet

  1. The first step when installing a toilet is to know the different parts of the toilet and which ones connect. This makes it easier, so you know which part comes with each step.
  2. Firstly, to block sewer gas and prevent hardware from dropping in, stuff a rag into the dirt pipe. The next step is to prep the floor and soil the pipe.
  3. Make sure the hole on the floor is big enough to fit the closet flange up to the collar. If the hole must be bigger, use a pencil to outline around the flange's base, then use a jigsaw to cut away the excess flooring.
  4. Then dry fit the dirt pipe into the curve in the closet. Place the flange over the soil pipe and calculate the length between the finish floor and the bottom of the flange's collar. Withdraw the dirt pipe and trim it to the previous step's dimensions with a handsaw. Scrape the cut edge with a utility knife to remove burrs. To guarantee that the flange's collar lies on the floor, dry fit the flange to the soil pipe and the soil pipe to the closet bend.
  5. After this, install the soil pipe and closest flange. To do this, PVC primer should be applied to the inside of the closet bend and one end of the dirt pipe. Add PVC cement to the identical surfaces and twist the soil pipe into the closet bend as soon as possible. The free end of the soil pipe and the interior of the closet flange should be primed, and cement applied. Until the collar is seated on the floor, twist and press the flange onto the dirt pipe.
  6. Turn the collar until the slots on the right and left of the hole are aligned. Then use stainless steel screws long enough to bite into the floor to secure the collar to the floor.
  7. After this, it is time to solder the stop valve, so turn off the water supply valve in the bathroom. Submerge the supply line in a bucket, then cut it with a tubing cutter. Allow roughly 1 inch of pipe for the stop valve and escutcheon to be attached. Allow the water to drain from the pipe. Then remove the stem and handle from the valve.
  8. Then using a wire-brush pipe cleaner, clean the inside and outside of the pipe, as well as the interior of the valve's inlet. Flux both locations with the same amount of flux. The escutcheon should then be placed over the supply line, followed by the stop valve, with the valve's outlet pointing upward.
  9. Then use a propane torch, warm the supply line stop valve joint. Then remove the flame after the junction is hot enough to melt the solder and run the solder around the joint. The junction is filled when a drop of solder arrives at the bottom.
  10. Then it is time to insert the wax ring. So, place the wax ring flat side down over the flange and gently press it in place. Lower the toilet bowl onto the ring by lifting it over the flange and aligning the holes in its base with the closet bolts. Then press the bowl down into the wax ring without twisting or shaking it until the bowl's base is resting on the floor. Shim the bowl using stainless steel washers if the floor is uneven.
  11. Now it is time to install the toilets tank so, make sure the large-diameter rubber tank-to-bowl washer on the tank's bottom is securely in place. From the inside of the tank, put the small-diameter rubber tank washers into the small tank holes, then the tank bolts. Lower the tank onto the back of the bowl gently, guiding the tank bolts' ends into the holes.
  12. Hand-tighten the nuts, alternating from nut to nut and checking to ensure the tank is level while holding each bolt head in place with a screwdriver. The ceramic will crack if you overtighten it, so be careful. Then connect the flapper chain to the tank's handle.
  13. Now install the supply line and the seat assembly so, curve the supply line with a tubing bender to fit between the stop-valve outlet and the tank-supply fitting. Then, with the flared end facing up, hold the pipe between these two places and mark half an inch below the outlet. This will ensure that there is enough line within the outlet. Then use a tube cutter and cut the supply line at the mark made above.
  14. Tighten the plastic nut on the supply line under the tank by hand. Connect the supply line with the plastic nut, compression nut, and compression ring. Apply a thin layer of Teflon paste to the outlet threads of the valve, then seat the line in the outlet and tighten the compression ring. Then, using a wrench, tighten the compression nut.
  15. Then to finish your instalment, insert the plastic bolts through the seat back and the bowl's seat holes, then tighten the nuts by hand. Then allow the tank to fill by turning on the main supply line and opening the stop valve. Flush six times to check for leaks.

Then your toilet is installed! There are quite a few steps to follow; however, DIY can be done when installing a toilet if you follow them easily. If it is too hard or putting you at risk, you can hire a tradesperson to help.

How Long Does It Take to Install a Toilet?

Whether you will DIY or hire a tradesperson to install your new toilet, the timescale varies. A simple procedure like replacing an existing toilet with an identical (or extremely comparable) new unit can take a plumber or tradesperson anywhere from 2 to 4 hours.

However, if you are trying to do it yourself, the timescale will extend as experience and knowledge make the job quicker. So, if you have never installed a toilet, then the process might be longer as you are also learning.

installing toilet

The different types of toilets influence the timescale as some are easier to install and others include different parts. If replacing the toilet flange necessitates removing tiles or opening the ceiling under the toilet, the overall duration will rise. Removing the old toilet will take more time as you have to unscrew and clean out the old screws.

Before installation, two-piece toilets must be constructed. It usually takes less than 15 minutes, but there's always the chance that a gasket between the bowl and the tank, or tank bolt gaskets, will fail to keep the water in and cause leaks. It takes longer to replace defective gaskets.

Type of Toilet Average Time
One Piece Toilet 1.5/2 hours
Wall Hung Toilet 2/2.5 hours
Low-Level Toilet 2-3 hours
High-Level Toilet 3-4 hours
Close Coupled Toilet 30-40 minutes
One Piece Toilet 35-40 minutes

Building Regulations or Planning Permission Approval for Toilet Installations

Building regulations and planning permission approval are extremely important as you don't want to get in trouble with your council.

They are also important because if there are building regulations, then that means there are hidden risks when installing a toilet.

You don't want to break or harm yourself when you can just see the regulations and get permission to install a new toilet.

installing toilet

Building regulations must be followed when installing your new toilet. These are in place to ensure that everything related to your new toilet is installed correctly, such as plumbing and drainage.

If they aren't, you'll have issues in the future, not just with the operation of your new toilet but also when it comes time to sell the house.

Your local council will issue you a building control completion certificate, which you will only be eligible for if everything is up to code. If it is when you can install a new toilet into your home.

When it comes to needing planning permission approval t is probably best to check with your council again.

It is always best to have a planning consultant on board who can debate what will apply to you; not all properties have the same regulations, and restrictions can change at any time, so having someone on hand who is up to date with the latest council restrictions will make your life much easier.

How to Clean and Maintain a Toilet

Cleaning toilets is a chore that few people hate. Therefore, although it is a job you hate, it is also essential.

Regular toilet cleaning removes hazardous bacteria as well as unsightly mineral or soil accumulation. Keeping your toilet clean will also prevent it from breaking if you keep it in a brand-new condition!

cleaning toilet

However, like with most household chores, cleaning your toilet regularly will make the job go more smoothly the following time.

To keep these items apart from the rest of your cleaning products, put them in a bucket. Cleaning the sink with the toilet sponge or washing dishes with the same rubber gloves is not a smart idea.

To start your cleaning process, including all of these items in your cleaning journey:

  • Rubber gloves
  • Scrub sponge
  • Toilet cleaner (vinegar also works!)
  • Toilet brush
  • Disinfectant spray
  • Cloth
  • Paper towels
  • Pumice stone

The best way to clean your toilet comes in five simple steps. It is the easiest method and keeps your toilet spotless every time. It is also a popular way to clean your toilet as none of the items needed is expensive.

  1. Begin by scrubbing the toilet bowl with a toilet cleaner and allowing it to soak. Pour a cup of vinegar into the toilet bowl if you're not using toilet cleaner. Swish the cleaner about the bowl with a brush as quickly as possible to scrub the bacteria off.
  2. If the toilet is very filthy, wipe it down with paper towels before tossing them in the bin. This will allow the outside of your toilet to look brand new! Spray an all-purpose disinfectant over the toilet's outside as the cleaning solution soaks in.
  3. After that, wipe the toilet's outside using a cleaning sponge. While you're there, pay care to the toilet's base and floor. Remove the seat and clean it separately if you have a modern toilet with a quick-disconnect toilet seat.
  4. After cleaning the exterior, clean the toilet bowl with a toilet brush. Use a pumice stone to get rid of any hard water rings or stains.
  5. Do you know where the water rushes out beneath the rim? Many people overlook this since it is out of sight. Don't overlook this location! Clean the bottom of the rim with your brush or sponge.

Using this method allows every part of your toilet to be cleaned and looking brand new, which is why it is the best.

There are other methods to clean your toilet that you can see on TikTok as many people have created a cleaning account to show ways to clean your home, including your toilet.

Questions to Ask When Hiring a Toilet Installation Specialist

1. What are their average costs to install a toilet?

This will allow you to know how much you are going to be spending just to install the toilet. If you do your research and ask a few toilet specialists, you will be given an estimate of what you are paying.

cleaning toilet

2. Do they have any previous employment references?

If you discover a toilet specialist who is prepared to show you examples of their previous work. Take the time to look at their previous work images if they have them.

It also reduces the chances of being scammed as they show you their past jobs and reduces worry because you know the job will be done correctly.

3. What kind of guarantee do they offer for their work?

Make sure you receive a formal guarantee of work or examine their usual guarantee. It's even better if their guarantee is backed by insurance, as you'll be protected if the tradesman goes out of business.

It's critical to review the promises because you don't want to discover an issue a few weeks after your normal guarantee period has expired, and it will cover the costs if the damage comes up again.


How long do you need to wait to use the toilet after installation?

It is recommended that you wait 4 to 6 hours if silicone was used to connect the toilet to the floor during installation. If the toilet is just attached to the floor, you can use it right away. Of course, if you don't plan on sitting on the toilet, you can use it right away.

Which toilet is the best?

Most plumbers recommend the gravity flush toilet as more garbage is flushed with less water. Because most of the water stays in the bowl, these toilets stay cleaner longer, lowering the number of cleaners and personnel required to keep them clean.

What are the signs that you need a new toilet?

Here are seven different signs that could mean you need a new toilet:

  1. Constant repairs
  2. Cracks in the bowl or tank
  3. Constant running
  4. The trouble with flushing, clogging or overflowing
  5. Wobbling toilet
  6. Round toilet bowl
  7. High water bill

What is a close-coupled toilet installation?

Close-coupled toilets have the cistern linked to the toilet bowl, resulting in a single, streamlined unit that incorporates both vital components. The pipes are concealed within the toilet's casings, and their modest size makes them ideal for cramming into tight areas.

Is DIY possible?

While a toilet installation might be a do-it-yourself effort for competent homeowners, keep in mind that mistakes can be costly.

Errors can result in floor damage, leaks, and other issues that may necessitate the services of a plumber. It's a good idea to hire a plumbing specialist in your region just to be safe.


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