how to install a bathtub on concrete floor

Is your bathtub old and you want to replace it with a more spacious one? A new bathtub adds a fresh look to the bathroom. The installation of a bathtub will require some special preparations if your floor is concrete or cement.

You probably won’t need professional assistance, but knowing the ins and outs of how to install a bathtub on a concrete floor will make your life much easier. Moreover, you will benefit from a convenient installation process without damaging the tub or the floor.

An Effective Way to Install A Bathtub on A Concrete Floor

In today’s market, most homeowners choose an acrylic bathtub and alcove bathtub because they are durable and inexpensive. The installation is pretty easy for this bathtub.

In this article, we will learn how to install a bathtub on a concrete floor.

Step 1: Securing the Spray Area

To those who are not familiar with the term “spray area,” it refers to the area of the floor and the adjacent wall of the bathtub that receives water splashes while you bathe. Spray areas should be splash-proof and waterproof, even if they are tiled.

Therefore, you will need to seal the wall with a unique sealing material in order to make it waterproof. Local plumbing stores typically carry a variety of these sealing materials. To ensure proper adhesion, it is important to clean the wall thoroughly before applying the sealing material.

Step 2: Leveling the Floor

In some instances, the concrete or tiled floors remain uneven even after intensive concentration. These are human errors that none can avoid. Although an uneven floor is detrimental to the bathtub as it becomes more susceptible to breaking.

So, to avoid frustrating scenes, make sure the floor area where you’ll set up the tub is level with a coating. The first step is to identify areas of unevenness on the floor and apply the sealing compound with a notched trowel. Before proceeding to the next step of the bathtub installation, let it rest on the floor for a few minutes.

Step 3: Setting Up the New Bathtub

Once the tub area has been leveled, the bathtub should be placed exactly where it should be. It would be helpful to install the bathtub in the area where the drain pipes are located. Next, align the tub with the spout tub plumbing. You may choose to use copper for the tub pout.

You should be careful during this step and place the tub slowly; otherwise, its weight may damage the plumbing drain.

Step 4: Leveling the Tub and Proper Placement

Level the bathtub slowly on the floor and ensure that all corners are positioned equally. Tap the tub into place with a short piece of wood measuring 2″ x 4″. When leveling the tub using the mallet and wood, make sure that it slowly falls into the already leveled floor and sinks properly with the sealing compound.

Step 5: Screwing

Using the drywall screws and cordless drill, attach the bathtub flange to the wall studs. Attach the screws every 6 inches around the tub flange. Be sure to tighten the screws to the wall stud.

Step 6: Inserting A Threaded Drain

The threading pipe must now be threaded through the male thread and inserted securely into the drain hole.  There should already be a male thread protruding above the drain. Please note that we are only synchronizing the bathtub setting with the existing bathroom plumbing set.

That should be no problem.

Step 7: Installing Overflow Components

Place the plunger, linking device, and overflow rod through the overflow hole of the bathtub and line them up with the overflow drain hole. Screw the overflow drain components into place.

Step 9: Threading the Tub Spout

You can now insert a new bathtub spout pipe through the spout hole so that it reaches the elbow of the wall.  Finally, tighten the threading spout with a plier. Copper pipes come already installed, so you don’t have to do anything.

Step 10: Test the Tub

Make sure the overflow drain and stopper work before you finish installing your bathtub on the concrete floor. The screws also need to be tightened up.

Congratulations! You’ve installed your bathtub!


It’s not as hard as most people think to put a bathtub on a concrete floor. The above instructions on how to install a bathtub on concrete floor will make your life a lot easier.

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