How to Fit a Shower

Contents:

• What type of shower is right for you?
• How long does it take to install?
• How much does it cost?
• Equipment you will need
• When to call a professional
• How to clean & maintain
• Key considerations
• FAQs

You may find the idea of installing a shower by yourself daunting at first. But with the right tools and advice, it’s absolutely possible to fit a shower without professional help or expensive costs, as long as it’s a safe and straightforward job. Whether you’re renovating your bathroom or want to install a new shower altogether, we can help support your project.

In this article, we provide a comprehensive guide on how to fit a shower from scratch. We discuss different types of shower installations, including the equipment you’ll need, how long it takes and how much it costs. We also discuss how to install a shower mixer valve, riser rail, shower tray, panel, door, enclosure and seal, as well as how to clean and maintain your new shower area.

Of course, we advise on when you should call for professional help if you need it, safety precautions and risk factors, and UK building regulations around installing electric showers. With our comprehensive guide, you’ll learn how to complete a shower fitting effectively, learning expert tips along the way. Check out our showering range for what you’ll need to start your DIY project.

First things first, you’ll need to decide what type of shower is right for you and your home, since there are different options available. There are many factors that may influence your choice, including your home’s plumbing system and water pressure, as well as your personal budget and preference. There are also pros and cons to each type of shower that you should consider before making a decision. We discuss the differences in further detail below: 

Digital showers

Pros:

• Modern and next-generation technology

• Sleek design and digital display 

• Precise temperature control

• Control remotely from smart device

• Personalised settings for family members

• Different types for different water systems

Cons:

• More expensive than other types

• Must be professionally installed

• Requires electricity to work

• Needs hot water source 

• Does not improve water pressure

Electric showers

Pros:

• Only needs cold water supply

• Heats water instantly, regardless of boiler

• Energy-efficient as only heats required water

• Ideal for low water pressure systems

• Can be used with combi boilers 

Cons:

• Water pressure can be weaker

• Needs electrical installation by professional

• Requires electricity which can be costly

Mixer showers

Pros:

• Traditional but stylish design

• Strong and consistent water flow

• Works well with high pressure systems

• Doesn’t require a power source

• Unit can be visible or hidden

Cons:

• Needs a good boiler or hot water cylinder

• Not great for low water pressure systems

• Can be expensive to install

• Must be installed by a professional

Power showers

Pros:

• Great for low water pressure homes

• Built-in pump for powerful performance

• Cheaper than mixer shower with pump 

• Has water-saving features

• Comes with thermostatic valves

Cons:

• Higher water and energy usage than other types

• Needs hot water supply from cylinder

• Pump can be a bit noisy

• Requires electricity to power pump 

• Cannot be used with combi boiler

Thermostatic panel showers

Pros:

• Consistent water temperature 

• Safe for families and elderly people

• Works with most plumbing systems

• Can come with stylish design elements

Cons:

• More expensive than mixer showers

• Must be professionally installed

• Can be affected by low water pressure

There are different factors that can affect how long it takes to install a new shower, including the type of shower it is and the plumbing system in the home. It also depends on whether other work needs to be done first. For instance, you may need to do electrical work like professional wiring, plumbing if new pipes need fitting or tiling if you’re renovating your bathroom.

Typically, a new shower installation can take between 1-2 days. This would include arranging the water supply, fitting the unit and sealing the area. If you’re fitting a shower tray or other features as well, you may need more time.

How long does it take to replace a shower?

It can take less time to replace a shower than it does to fit a new shower, since there would already be a system in place. However, it depends if the new shower is the same type and will fit the existing connections. If you already have the wiring and pipework in place for the type of shower you want, it may just take a couple of hours.

There are some factors that could affect the time it takes to replace a shower fitting. First, you’ll need to remove the old shower, which could be difficult if there’s hidden pipework. Of course, if you need to change the connections, this will increase the time too. It also depends on whether you’re renovating the bathroom, as you may want to upgrade the tiling or repair any gaps in the wall.  

How much it costs to install a new shower depends on various factors, especially the type of shower that it is and the materials you use. In the UK, as of 2025, it could cost between £300-600 to install an electric or mixer shower, £550-900 for a power shower, and £550-£1300 for a digital shower. These costs are an average range and include both the unit and installation.

Of course, these are rough estimates, and depend on the fitting and supply. The actual cost may be higher if complications arise during the shower installation. Ultimately, prices are usually affected by the type of shower, the cost of labour and electric and plumbing connections. There may be extra costs if you want additional features like thermostatic controls.

You can also calculate the cost yourself by researching the type of shower, checking your home requirements, and comparing quotes from local plumbers. When budgeting for the project, always account for any potential costs that may come up for necessary modifications.

How much does it cost to replace an existing shower? 

Replacing an existing shower fitting will also vary in cost, again depending on the type of shower, cost of labour and the installation process. Generally, the cost of fitting a shower will be similar regardless. But if you’re simply replacing a shower, you may save on electrical work and pipework, especially if you’re not changing between different types of showers.

If you are changing the type of shower and it doesn’t work with your current home system, including your boiler, or if the new shower has additional features like digital controls or a built-in pump, this will cost more to buy and install. It also depends on where you live and what the local labour rates are. For instance, in London as of 2025, plumbers can charge anywhere between £70-140 per hour, but in other areas may charge between £30-70.

To install a new shower, you’ll need to make sure you have the right plumbing tools and consumables to hand. This will help you save time and make the process smoother and more efficient. We’ve listed all the shower parts and general equipment you will need for a shower installation:

Materials:

• Shower unit (electric, mixer, power, digital or panel)

• 15mm piping (for new connections) 

• Electrical cables (for new connections)

• Silicone sealant and gun (for waterproofing)

• PTFE tape (to seal pipe joints)

• Pull cord switch (for electric showers)

• Compression fittings (for secure connections)

• Shower hose and riser rail (on wall)

• Wall plugs and screws (to secure unit)

Tools:

• Drill and drill bits (to secure unit and fixtures)

• Adjustable wrench (tightening connections)

• Pipe cutter or saw (cutting pipes to size)

• Screwdrivers (Phillips and flathead)

• Spirit level (for alignment)

• Wall scanner (as a stud detector)

• Pipe wrench (for turning pipes)

• Multimeter (if installing an electric shower)

Here are the step-by-step instructions on how to install a shower. These steps are generalised for all shower fittings, but we’ll provide more specific advice for different types of showers further below. Check out our full range of showering products.

Step 1. Choose the right shower for you

First, you’ll need to decide the right shower for you. There are different types to choose from, including electric, mixer, power, digital and thermostatic showers. We’ve discussed their pros and cons, so it’s up to you to see which type is best for your household. Keep in mind that some types may need a specific system in place, and you might need to make other modifications to your boiler, wiring or piping. Check out our guide to shower pumps if your home needs one.

Step 2. Gather tools and materials

We’ve listed the tools and materials you’ll need for a shower installation above, so you can gather all the equipment you need before you start. Being prepared helps prevent delays and makes your project much more efficient. Depending on the type of shower you choose, there may be specific equipment you need. If you need piping, lay a 15mm pipe at the location of your new shower.

Step 3. Turn off water supply

Make sure that you turn off the water supply before starting with your shower fitting. For electric showers, head here.

Step 4.  Prepare connections and pipework

If you already have a shower in place, first remove this old unit. You may need to adjust the existing pipework using a pipe cutter to install the new shower. If you’re placing new piping, run the 15mm pipe from the cold water supply, which is usually near the storage tank, to the shower unit. Use a drill to install the pipe behind the wall where the unit will be. You’ll need to check electrical connections for an electric shower - more on this in the next section. 

Step 6. Mount shower unit

Before you mount a shower unit, you’ll need to measure and mark its position. You can use a pencil to mark where your shower unit will fit and a spirit level to place it correctly. Make sure to use a wall scanner to check for wires and pipes before drilling. Once you’re ready, go ahead and drill holes into the tiles, and then secure the unit with wall plugs and screws. Make the connections and use an adjustable wrench to tighten the fittings into place.

Step 7. Attach shower hose and riser rail

Once the shower unit is in place, you can attach the shower hose. Make sure to tighten it so it fits securely. You can then fit the riser rail to the wall, aligning it accurately with the shower head.

Step 8. Seal and test installation

Once you’re done, apply silicone sealant around the shower unit to avoid water damage. Then, turn your water supply back on and run the shower. Use this time to check there is proper water flow and no leaks. 

To fit an electric shower, you will need to take some additional steps to the ones listed below. You’ll also need to follow UK building regulations around electrics in a bathroom to manage the risk of an electric shock in a wet space. Specifically, this is the BS 7671 in the IET Wiring Regulations. 

There are different zones in the bathroom, divided by how close they are to a water source. 0 being inside the shower tray, 1 is above the shower or up to 2.25m from the floor and 2 is 0.6m beyond the shower perimeter and up to 2.25m high.

Depending on where in the bathroom you’re working, will determine what type of electrical equipment is allowed according to the voltage and IP rating. But you’ll also need a 30mA RCD for all circuits in the bathroom for safety.

Step 1. Choose the right electric shower for you

There are a range of electric showers, so try to find one that is suitable to your home’s water pressure. It’s also important to check the electrical capacity of your home and that your shower unit can manage the wattage.

Step 2. Turn off electric supply

As mentioned, you’ll need to locate and turn off the cold water supply before fitting a shower. But for electric showers, you’ll also need to switch off the electricity supply at the consumer unit. This is extremely important to ensure safety. 

Step 3. Prepare the electrical connections

Besides adjusting or fitting the pipework, if you’re installing an electric shower, you’ll also need to prepare the electrical wiring. Make sure to protect the circuit using an RCD for safety. Then, use an electrical cable that suits your shower’s power rating, from the consumer unit to the shower. It’s essential that the wiring is correctly in place, as part of the UK safety regulations for bathrooms. For instance, the electric shower should have its own circuit separate from the consumer unit. 

Step 4. Install a pull cord switch

For electric showers, you’ll need to install a ceiling-mounted pull cord switch or wall-mounted switch for your safety. This can be on the inside or outside of your bathroom, as long as it is easily accessible and has an on/off switch that is clearly visible. Also, the switch should not be in zones 1 or 2, as defined by the IEE Wiring Regulations. When you drill a hole in the wall for the electric cable, it should then run from the shower unit directly to the pull-cord switch.

Step 5. Wire the electrical connections

Connect the live (L), neutral (N) and earth (E) wires to the corresponding terminals in the shower unit. If you’re not sure about this part, it’s best to call a professional. 

Step 6. Turn on electric supply

Once you’ve mounted your shower unit and connected the shower hose and riser rail, you can seal around the shower unit. You can then turn the electricity back on. 

Step 7. Hire an electrician

Even if you fit a shower yourself, you will still need to hire an electrician to check that your wiring is secure, and then let the electrician make the final connection. 

A thermostatic mixer shower blends both hot and cold water to create a steady temperature. That’s why there may be some additional steps to install this shower:

Step 1. Choose the right thermostatic mixer shower for you

For a thermostatic mixer shower, you’ll need a hot and cold water supply, so check you have this in place first. Also, make sure the type of wall you have is suitable as well.

Step 2. Gather tools and turn off water supply

You’ll need similar tools as you would to fit any shower, such as a drill, adjustable wrench, pipe cutter, PTFE tape and silicone sealant. Of course, before you start any work, you should isolate the main water supply. 

Step 3. Mark positions and prepare pipework

You can then measure and mark where the hot and cold water inlets will be. It’s best to join them as close as you can to your hot and water tanks, running them through the wall to the shower. Where you place the shower in relation to your water tank also depends on if you have a built-in pump or not. 

Once you’ve decided the position and direction of the pipe, use a spirit level to help with accurate alignment. Then, cut the pipes to size and fit isolation valves so it’s easier to maintain in the future. 

Step 4. Mount mixer shower unit

After you’ve marked where it will go, you can drill holes for the brackets and fixtures of the mixer shower unit. Mount the unit in place and secure it tightly.

Step 5. Connect water supply

Before you connect to the shower valve, make sure all the pipework is flushed through first. Then, attach the hot and cold water pipes to the inlets on the mixer unit, using PTFE tape to prevent leaks. You should then tighten the connection with a wrench.

Step 6. Attach shower hose and riser rail

Attach the shower hose to the outlet, and then install the riser rail so it's in line with the shower and at the height you want.

Step 7. Turn water supply on and test function

Once everything is in place, you can turn the water supply back on and check for leaks. You can also adjust the thermostatic control so you have an ideal temperature. 

Step 8. Seal and finish

Apply silicone sealant around the wall fixtures so it’s not damaged by water. Make sure to let it dry completely before you use the shower.

If you want to upgrade your bathroom, adding a thermostatic shower valve and rail can make a stylish impact. A mixer valve blends hot and cold water to maintain a comfortable temperature. The shower rails means you can adjust the position of your showerhead, which is ideal for families. Check out our shower kits and riser rails, and then continue below for how to install:

Step 1. Prepare the area to install shower mixer valve

First, turn the main water supply off, and then turn on the hot and cold water taps to flush the pipework. Then, mark where the hot and cold water pipes are positioned and where the mixer valve would be, using a spirit level to help with measurements. You should also use an electronic detector to make sure there aren’t any hidden cables or pipes in your chosen positions.

Step 2. Gather tools and materials

Again, you’ll need similar tools and materials as you would for a shower installation. Make sure you have a drill and bits, adjustable wrench, pipe cutter, compression fittings, wall plugs and screws, PTFE tape and silicone sealant. 

Step 3. Cut pipework and make adjustments

Use a pipe cutter to trim the hot and cold water pipes to the right length for the mixer valve. Of course, fit isolation valves for easier maintenance in the future. 

Step 4. Fit mixer valve

Then, drill holes where you want to place the mixer valve, and insert wall plugs. Attach the valves to the pipe, making sure that the hot inlet and cold inlet are correctly placed. Tighten with an adjustable wrench, and then prevent leaks by using PTFE tape. 

Step 5. Fit shower rail

Find the position for the shower rail so that it’s high enough for the tallest in the family, but not too low either. Then, fit the lever and holder to the rail. Place the bracket on the ends of the shower rail with wall plugs and screws. Use a drill to make holes and put the shower rail into place, then tighten the fittings. 

Step 6. Connect shower hose and head

Once your shower rail is in place, you can attach the shower hose to the mixer valve. Then, add the shower head holder to the rail and put your shower head into place. 

Step 7. Test for leaks and adjust

Now you can turn the water supply from the mains again and test for any leaks. With your shower mixer valve, you can adjust the temperature so it’s comfortably warm.

Step 8. Seal and finish

To finish off, apply silicone sealant around the pipework and fittings so water doesn’t get through, and make sure to let it dry before you use the shower.

To complete your shower fitting, you’ll need to install a shower tray. This will help protect your shower closure, preventing leaks and supporting drainage. Check out our shower tray buying guide and read below on how to do it:

Step 1: Choosing a shower tray

First, choose the right shower tray depending on your bathroom. Take into consideration the size and layout of your space, and how you would need to drain the water. Our guide can help you decide if you need a low-profile, raised or quadrant tray.  

Step 2: Prepare area

If you’re making any changes to plumbing, turn the water supply off before you do. Otherwise, check that the area is clean and where you’ll be placing the waste pipe in relation to the shower tray drain.

Step 3: Fit waste trap and drainage

When you’re ready, attach the shower trap to the outlet of the shower tray first. Make sure that the pipes are positioned slightly downwards so that the water can drain effectively. Once it’s attached, check the waste pipe for any leaks.

Step 4: Position shower tray

If all is good, you can move on and put the shower tray into position, using a spirit level for accuracy. Adjust if you need to, or use adjustable legs if they come with the tray. 

Step 5: Secure and seal

How you secure your shower tray depends on the flooring. If you have a solid floor, you may need tile adhesive or a bed of mortar to make it more stable. Press the shower tray into place and give it time to settle. For a raised shower tray, use the support provided. Once your shower tray is securely in place, apply a waterproof silicone sealant all around. This includes its edges and along the wall. Make sure to let this fully dry before using the shower.

Step 6: Test for leaks

Finally, check that there are no leaks by pouring water into the tray, making sure it goes down the drain. You can also stand on the shower tray to see if it feels steady.

Instead of tiling your shower area, you can install new shower panels instead. This is a modern and stylish option that is still waterproof and easy to maintain.

Step 1. Prepare area

If you already have tiles in place, remove these from the walls. Then, clean the area and make sure the wall is dry. You can also use sandpaper to smooth the wall.

Step 2. Gather tools and materials

Make sure you have everything ready before you start. You’ll need your chosen shower panels, along with other tools and materials. This includes your measuring tape, spirit level, adhesive, silicone sealant and possibly wall plugs and screws. You may also need a saw if you need to adjust some panel sizes.

Step 3. Measure and cut panels

Measure the area where you’re placing the shower panels and see how many will fit there. Mark the dimensions on the panels and cut them to size. If you’re placing a shower panel in the corner, check if it’s a precise fit before using adhesive. 

Step 4. Apply adhesive and fix panels

Once your panels are ready, apply adhesive evenly across the back. Then, press the panel onto the wall with firm pressure from one side to another. Check that it’s aligned correctly with a spirit level.

Step 5. Fit panels and and seal joints

Continue applying adhesive to each panel and fitting them into place. Make sure you follow the tongue-and-groove edges for the panels to fit together. Then, seal all the joints with waterproof sealant to prevent damage and leaks.

Step 6. Final touches

Depending on the style of shower panels and how they’ve been installed, you may need to fit corner trims or end caps, and check for gaps for a clean finish. Make sure to wipe away extra sealant so it doesn’t look messy. Let everything dry properly before you use the shower.

As part of your new shower installation, you may want to fit a shower door instead of a curtain. A watertight shower door can help prevent leaks and splashes, while also offering a stylish aesthetic. There are different types available, including hinge, pivot and sliding shower doors. Here are the instructions:

Step 1. Prepare the area to install a shower door

Before you install a shower door, make sure that everything else is level, such as your shower tray and bathroom wall, and clean the area properly. Then, measure the opening of the shower where the door would go and make sure you choose the right size for your swinging or sliding door.

Step 2. Gather tools and materials

Once you have your shower door, check the components that have come with it. Make sure you also have a drill and bits, screwdriver, wall plugs and screws, measuring tape, masking tape, spirit level, and sealant gun.

Step 3. Install wall channels

You’ll then need to mark where the wall channels on either side of the shower opening will be. You can use a spirit level to check the positions are vertical, then drill holes into the tiles to align, and insert the wall plugs. Install the wall channels with screws, making sure they are in line with the wall.

Step 4. Fit door frame

Then, put the shower door frame together as instructed by the manufacturer. Fit the frame into the wall channels, adjusting until it's aligned, and then secure it into place.

Step 5. Attach shower door

How you attach the shower door depends on the type it is. If it’s a sliding door, insert it into the upper and lower tracks. For hinged and pivot doors, attach the hinges to both the frame and the door. Check everything is aligned before you tighten the screws.

Step 6. Seal and waterproof

Once the shower door is in place, apply silicone sealant along the base of the shower door, as well as the outer edges of the wall channels (not the inner). You can use masking tape to make it look neater, and then wipe away excess sealant.

Step 7. Test and adjust

Check if the shower door opens and closes easily. If there are any gaps or you need to adjust the hinges, you can do this now. Make sure to let the silicone sealant fully dry before using the shower. 

A shower enclosure is another way to transform your shower space, so not only is it functional at preventing leaks and splashes, but it also looks stylish. There’s different shapes and sizes you can choose, and whether you want a walk-in enclosure. Choose your type of shower enclosure, and follow the instructions below.

Step 1. Prepare the area

As always, you should make sure the area you’re working on is level. This includes the walls and the shower tray. Then, clean the area and measure it to see if it’ll match your chosen shower enclosure. 

Step 2. Gather tools and materials

You’ll need similar tools and materials as before, such as a drill and bits, screwdriver, wall plugs and screws, measuring tape, masking tape, spirit level and silicone sealant gun.

Step 3. Install wall channels

According to where you will fix the shower enclosure, position the wall channels there. Check they are vertical with a spirit level. You can then mark and drill holes into the wall, placing the wall plugs, and attach the wall channels with screws. 

Step 4. Assemble and position

Assemble the shower enclosure using the frames and glass panels, according to the type you’ve chosen and the instructions given. With great care, lift and slot the enclosure into the wall channels. Adjust them until you have a secure fit.

Step 5. Secure shower enclosure

If everything is aligned, you can secure the shower enclosure by tightening the screws into the wall channels using a screwdriver. For a shower enclosure with a hinge or sliding door, you’ll need to install hinges or rollers. Check that the door seals are aligned so the enclosure is watertight. 

Step 6. Test and adjust

Check that the shower doors open and close properly, and if there are any gaps or misalignments. If you need to make adjustments, do so, and then use a silicone sealant gun along the outer edges only. Allow time for the silicone sealant to dry before using the shower.

Shower seals are an important part of your enclosure since they help prevent water damage, keeping your bathroom dry and watertight. However, after some time, seals can become worn, so here’s how to fit a new shower seal.

Step 1: Prepare the area

Start by thoroughly cleaning your shower, including the door and tray, so it’s free from dirt and limescale. You’ll also need to remove the old sealant by peeling it off. Once it’s all clean, dry the area completely before moving onto the next step.

Step 2: Take measurements

Check the length of the shower door so you know how much shower seal you’ll need. You may also need to measure the thickness of the door. There are different types of shower seals, depending on if it’s for the bottom or side of the door. If you need to, you can trim the seal size to fit using scissors. 

Step 3: Install shower seal

There are also different ways to apply the shower seal, depending on the type you choose. Some are clip-on while others are slide-on. You’ll need to align the seal with the edge to put it into position. If you go for an adhesive shower seal, apply the sealant and then firmly press the seal into place.

Step 4: Check its a secure fit

It’s important that the shower seal is fitted evenly and securely. Check if it’s tight enough, if any extra length needs to be removed, and if the shower door opens and closes easily.

Step 5: Test for leaks

When the shower seal is in place, run a small amount of water and check for leaks. If there is any water leaking, you may need to adjust or reapply the seal again. Remember to let adhesive shower seals dry fully before using the shower.

While it’s absolutely possible to fit a shower by yourself, it’s important to recognise the limits of DIY approaches. Depending on how complex the shower installation is, you may need to seek professional plumbing services. For instance, if you need to rewire electrics or make changes to the plumbing, you’ll need expert attention. It also depends on whether you have problems with low water pressure and need to install a shower pump as well. We recommend using a competent and suitably qualified NICEIC registered plumber. This can help you complete the project safely and efficiently, without costly or dangerous mistakes.

Once you’ve installed your new shower, you should make sure to properly clean and maintain it. This will help extend its lifespan so it looks fresh for longer. Here are some tips:

• Wipe surfaces daily with a sponge and microfibre cloth to remove soap scum and water spots every time you use the shower.

• Clean shower heads monthly by soaking them in white vinegar to remove limescale.

• Unclog the drains regularly to prevent blockages from hair and residues.

• Check for leaks and resolve issues by either replacing seals or tightening fittings.

• Use appropriate and safe chemicals for materials to avoid damage to components.

• Apply protective coating on glass items to repel water and minimise streaks.

There are some key factors to consider for a new shower install. First, check your home’s water system and what the pressure is like, so you can choose a shower that is compatible. You can then decide between an electric, mixer, digital or power shower from there. You’ll also need to measure the space and plan the layout, assessing if the right electrical work and plumbing is in place. Then, once you’ve completed your shower installation, keep your bathroom clean to help maintain your new set-up. These steps will help make your project a success from start to finish, increasing its longevity while remaining functional. Check out our shower buying guide to support your budget and final purchase.