
Are you looking to update your bathroom with a new drop-in tub installation? Installing a drop-in bathtub can be a great way to elevate the look and feel of your bathroom while also providing a functional and relaxing space. However, the installation process can be intimidating, especially for those who have never done it before. But fear not, as this step-by-step guide will walk you through the process of how to install a drop-in tub.
Gather Materials and Tools

Before you begin, it’s important to gather all the necessary materials and tools. Here’s a list of items you’ll need:
Materials:
- Drop-in tub
- Mortar mix
- Plumbing materials (faucets, valves, drain)
- Silicone caulk
- Cement backer board
- Screws
Tools:
- Measuring tape
- Pencil
- Level
- Power drill
- Hole saw
- Trowel
- Bucket
- Rubber gloves
It’s important to have all of these materials and tools on hand before you begin the installation process. This will make the process smoother and ensure that you have everything you need to complete the installation.
Measure and Prepare the Space
Once you have all the materials and tools, the next step is to measure and prepare the space for the drop-in tub. Here’s what you need to do:
Measure the Space for the Tub
- Measure the length, width, and depth of the tub
- Measure the space where the tub will be installed
- Mark the location of the tub with a pencil
Prepare the Space for Installation
- Remove all old fixtures and debris from the space
- Install cement backer board on the walls around the tub area
- Use a level to ensure that the board is straight
- Attach the board to the wall studs using screws
By measuring the space and preparing it properly, you’ll ensure that the installation process goes smoothly and without any hiccups. In the next section, we’ll walk you through the process of installing the drop-in tub.
Install the Tub
Now that you’ve prepared the space, it’s time to install the drop-in tub. Follow these steps:
Place the Tub in Position
- Lift the tub and place it into the space you’ve measured and marked
- Make sure it’s level and adjust the height with shims if necessary
- Ensure that the drain and overflow holes align with the plumbing
Apply Mortar Mix
- Mix the mortar according to the manufacturer’s instructions
- Apply a layer of mortar on the bottom of the space where the tub will rest
- Press the tub into place, ensuring it’s level
- Wipe away any excess mortar
Connect the Plumbing
- Connect the faucet and valve to the plumbing
- Connect the drain and overflow to the plumbing
- Ensure that all connections are tight and secure
- Turn on the water to check for leaks
Seal the Tub
- Apply a bead of silicone caulk around the perimeter of the tub where it meets the wall
- Smooth the caulk with a caulk smoothing tool or your finger
- Allow the caulk to dry according to the manufacturer’s instructions
- Wipe away any excess caulk
Tips for Ensuring Proper Installation
Here are some tips to ensure that your drop-in tub installation goes smoothly:
Measure Twice
- Measure the space and the tub twice to ensure accuracy
- Double check that the drain and overflow holes align with the plumbing
Use Quality Materials
- Use high-quality materials to ensure that your installation lasts
- Don’t skimp on the mortar mix, plumbing materials, or silicone caulk
Follow Manufacturer’s Instructions
- Follow the manufacturer’s instructions for the tub, mortar mix, and plumbing materials
- Don’t improvise or take shortcuts that could result in damage to the tub or leaks in the plumbing
By following these tips and the steps outlined above, you can ensure that your drop-in tub installation is a success. In the next section, we’ll walk you through the process of connecting the plumbing and drain.
Connect Plumbing and Drain
After the drop-in tub is in place, the next step is to connect the plumbing and drain. This step requires some basic knowledge of plumbing. If you’re not comfortable with plumbing, it’s best to hire a professional to do the job. Here are the steps to follow:
- Install the faucet and valves according to the manufacturer’s instructions
- Connect the drain to the tub
- Use silicone caulk to seal around the drain and overflow openings
- Turn on the water supply to check for leaks
- Tighten any connections that are leaking
It’s important to ensure that all connections are tight and there are no leaks. Leaks can cause damage to your bathroom and your home, so it’s important to take this step seriously.
Finish the Installation
The final step in the drop-in tub installation process is to seal the tub and complete any finishing touches. Here’s what you need to do:
Sealing the Tub
- Apply silicone caulk around the edges of the tub
- Smooth out the caulk with a caulk smoothing tool or your finger
- Let the caulk dry for at least 24 hours before using the tub
Finishing Touches
- Install any trim or accessories that came with the tub
- Clean the tub with a mild soap and water
- Enjoy your newly installed drop-in tub!
By following these steps, you’ll have a beautifully installed drop-in tub that’s both functional and aesthetically pleasing. Remember to take your time and follow the manufacturer’s instructions for the best results. With a little bit of patience and effort, you’ll have a bathroom that you can be proud of.