How to install a bathtub in an RV?

In this blog post, we will answer the question: “How to install a bathtub in an RV?” We will discuss installing a bathtub in an RV from scratch. We will also discuss the essentials, fixtures, and required connections. At the end of this post, you will learn to install a bathtub in an RV in less than a couple of days.  

How to install a bathtub in an RV?

To install a bathtub in an RV, follow the steps described below.

  • Determine the location
  • Remove the existing fixtures
  • Prepare the space
  • Connect the plumbing system
  • Place and secure the bathtub
  • Install the fixtures
  • Test for bathtub
  • Add the finishing touches
  • Install shower curtains.

Determine the location

  • You must first determine the location to install a bathtub in an RV. Ensure that there is enough space in the bathroom to install a bathtub. This can be a time-consuming project, but it is simple if you have the right plan and tools.
  • Determine a proper place to install the bathtub in your RV. Ensure that the RV bathroom has enough space to accommodate a bathtub. The bathtub should maintain the other functions of the bathroom. It is also essential to consider factors like the plumbing systems and structural support.
  • You can measure the dimensions once you have enough space for the bathtub. This also depends on the type of bathtub that you plan on installing. The type of bathtub depends on the available space in the RV.
  • Make sure that the bathtub will fit according to the dimensions. It is also essential to have a little space around the bathtub for easy installation. Avoid getting a bathtub that is too large since you might have trouble installing it and getting it inside the RV bathroom.
  • When purchasing the bathtub, consider the dimensions of the RV bathroom door. If you already have a bathtub, stick to the exact dimensions of the old one when purchasing a new one.

Remove the existing fixtures

  • Next, you must remove all the existing fixtures if applicable. Remove the old bathtub if your RV has one, and work carefully while removing it. Avoid damaging any other parts in the RV bathroom while removing the bathtub.
  • While removing the other existing fixtures, ensure the plumbing systems are turned off. It is also always good to consult an expert to learn about working with RV plumbing systems.

Prepare the space

  • You must prepare the space before installing the bathtub. Get rid of all the dirt and clean the area thoroughly. Get rid of any obstructions if there are any.
  • Check the floor for stability and make sure that the floor is reinforced. The RV bathroom floor must be able to take the weight of the new bathtub.
  • Remember to shut off the water while working on this project. It is also advised to inform another person at home.

Connect the plumbing system

  • In the next step, you need to connect the plumbing system for the bathtub. Make sure that there is an outlet in the location where you plan on placing the bathtub. The outlet should be connected to the greywater tank in your RV.
  • You must connect a pipe if you do not have one. Ensure that the plumbing system is connected in the proper manner.
  • Determine the location of the drain and the water source line for the bathtub. You will be required to install drain pipes and water supply lines. Ensure to follow the RV guidelines for plumbing. You should make some alterations to the existing plumbing systems if you are installing a bathtub for the first time.

Place and secure the bathtub

  • Next, you need to place and secure the bathtub carefully. This task will require help since it is not easy to carry a bathtub alone.
  • Get help from another person to place and secure the bathtub. The bathtub has to be positioned carefully, and it must be secured to the floor or the RV walls. Depending on the type of bathtub, the installation process can vary. Follow the manufacturer’s instructions to secure the bathtub properly in the proper manner.
  • Position the bathtub to ensure it is appropriately aligned to the right level. The plumbing connections need to be in line with the bathtub. You must alter the plumbing connections according to the dimensions of the bathtub. Hence, getting the bathtub first and making the necessary changes to the plumbing system is essential.
  • Secure the bathtub with bolts or the provided hardware. If you cannot get a bathtub to match the dimensions, you might need to make one of your own.

Install the fixtures

  • Next, you need to install the fixtures for the bathtub. Attach the drain for the bathtub and attach the drainpipe. Ensure the pipes are secured tightly and the gaps have no leaks.
  • Connect the water supply lines to the bathtub’s faucets. You will need to take the connection from the freshwater line. Hence, you will require to plan out this process. 
  • Check the bathtub manufacturer’s instructions to get the right connections in place. The drainage and the faucets are the most important connections that must be adequately secured.

Test for bathtub

  • Now it’s time to test the bathtub by running the water from the freshwater line. Double-check the plumbing systems once again and ensure that they are sturdy. Run the water from the freshwater tank and open the faucets to see if everything is functioning properly.
  • In case of any leaks, be sure to address them immediately. Shut off the water if you find any leaks. Drain the water and make sure that it flows to the greywater tank. Repeat the process twice to confirm there are no leaks and the system is functioning correctly.

Add the finishing touches

  • Next, you must add the finishing touches after the bathtub is securely installed. This may include installing the tiles, walls, or any other materials. Ensure to make the RV bathroom like before and get rid of any damages.

Install shower curtains

  • Some bathtubs will need an RV tub surround. Install shower curtains around the bathtub to provide more privacy and prevent the water from coming outside the tub. You might be required to install a guide bar, catch rail, and a top bar for the shower curtains to move around correctly.

Check the RVs user manual to find the details about the plumbing systems. Get help from a professional if you need help with this process. Installing a bathtub in an RV is easy if you have all the required tools and ideas. Contact a professional to help you with this task if you are uncomfortable working with plumbing systems.


In this blog post, we have answered the question: “How to install a bathtub in an RV?” We have discussed installing a bathtub in an RV from scratch. We have also discussed the essentials, fixtures, and required connections.

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