8 Simple Tips: How to Clean a Cast Iron Tub

Having a cast iron tub is a great addition to your bathroom. But, you have to know how to clean a cast iron tub to keep it last longer.

If you want a bathtub that is built to last, you might consider investing in a cast iron tub.

It’s built from a solid slab of cast iron, so it can withstand the test of time and keep your bathroom looking great for years.

It is a popular style of the bathtub because it is durable and relatively affordable.

A cast iron tub is a bathtub made of a mixture of porcelain and iron materials so that it makes a sturdy and strong material.

Despite the fact that the majority of bathtubs on the market now are constructed of plastic, many individuals still prefer cast iron bathtubs.

Cast iron tubs are a beautiful addition to any bathroom, but they do require some maintenance to keep them looking their best. However, as time passes by and stains accumulate in the tub, it will look dirty and discolored.

You probably don’t realize how important a clean tub is for your health until you use an old or dirty one. It affects your comfort, as well as the safety of your family. In this guide, we’re going to show how to clean a cast iron tub in.

How to clean a cast iron tub

1. White vinegar


White vinegar will cut through that build-up and make it easy to give your tub or sink a thorough cleaning. It’s also non-abrasive and won’t cause damage to your tub when applied. 

Applying this solution gently to the surface of the tub will loosen dirt and mildew.

First, mix an equal amount of white vinegar with water in a container. Then, pour the mixture into the tub to cover it.

Let it sit for about 30 minutes. After that, brush this mixture over the surface gently. Last, rinse the tub thoroughly with clean water.

You can also use white vinegar to clean a fiberglass door.

2. Lemon water

Lemon is a fine cleaning agent to remove the stains on the cast iron tub. The acidity will break down the dirt and grime easily.

To clean the cast iron tub, slice the lemon in half and squeeze the juice, especially in the stained area. Leave it for 15 minutes.

Then, scrub the cast iron tub with a brush. After that, rinse the residue with plain water.

3. Baking soda


When you want to clean a cast iron bathtub, you can use baking soda. It is an abrasive mild cleaner that works really well to remove dirt and stains.

To clean your tub, you simply mix 4 tablespoons of baking soda with 1 liter of water and mix well. ‘

Then rub it into the tub and wait for about 20 minutes before scrubbing it clean. Then, wipe it down with a damp brush and it will look brand new again.

You can also add white vinegar, then wipe down the entire bath using the solution. This will make your cast iron tub a shiny and fresh smell.

You can also use baking soda to clean frosted glass.

4. Hydrogen peroxide

Hydrogen peroxide (H2O2) works to clean up many kinds of stains and dirt since H2O2 is a strong oxidizing agent. It can be used to clean sinks and bathtubs. It’s great for removing rust and hard water deposits too.

To clean your cast iron tub, pour the hydrogen peroxide into the cast iron tub gently. Wait for 10 minutes. Then, scrub with a brush thoroughly. Last, rinse with plain water completely.

Just like with other cleaning products, be sure to read the instructions before attempting to clean your cast iron tub.

5. Use your shampoo


You can use the shampoo to clean a cast iron tub. It’s going to leave a soft feeling to the cast iron because of all the extra oil it adds.

The anionic surfactants in the shampoo should release your tub from any buildup of soap scum and hard water.

First, add a generous amount of shampoo to the tub. Use enough amount of shampoo, do not overuse it. Let the mixture soak for 1 hour. Then, use a scrub brush gently to remove any grime.

Scrub with a brush or scouring pad for extremely dirty tubs. After scrubbing, rinse thoroughly. Dry your tub with a towel.

6. Use a coke drink

Coke drink is helpful for cleaning cast iron tubs because it contains citric acid, phosphoric acid, and carbonic acid, all of which dissolve rust.

The rust and stubborn stain on your cast iron bathtub will be softly disintegrated and removed by the stain-releasing carbonation in the choke drink.

First,  pour 2 liters of cola drink into the tub, especially in the stained area, and leave for one hour. Next, scrub the bathtub with the brush until it’s clean. Then, rinse the tub with plain water.

In addition, you should wash your cast iron tub with warm, soapy water to get rid of any residue and coke smell.

7. Detergent


One trick to cleaning your bathroom is to wash the rust stains on your cast iron tub with household detergent and water.

First, mix water and detergent. Mix it well until it reaches a liquid consistency. Next, pour the solution into the tub and brush it thoroughly with a brush.

When you’re done brushing, rinse with plain water to get rid of any residue left on the cast iron tub.

8. Chemical cleaning liquid

Chemical cleaning products are extremely effective at removing stains and restoring shine to your cast iron tub.

The chemicals will break down the dirt in your bathtub and seep into it and clean the stains on your bathtub.

Pour the liquid into the cast iron tub and let it sit for 30 minutes to clean it. Then, using a brush, scrub the surface until all of the gunk is gone. Rinse it thoroughly with water until it is completely clean.

Before using cleaning solvent, make sure you read the instructions. It tells you about proper use and possible precautions.

Make sure not to get any liquid on your skin so you don’t get unwanted burns. Read about how to properly use the liquid, and remember to wear rubber gloves.



Cleaning a cast iron tub can be a daunting task. The key to getting the job done without spending a fortune is understanding how to properly clean it and then having the right tools for the job. In this article, you will discover how to clean a cast iron tub.

  1. White vinegar
  2. Lemon water
  3. Baking soda
  4. Hydrogen peroxide
  5. Use your shampoo
  6. Use coke drink
  7. Detergent
  8. Chemical cleaning liquid

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