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Can I Polish Cast Iron Bath Tubs?

Cast iron is strong and durable. Its various uses include pipes, machinery parts, buildings and bridges as well as everyday cast-iron cooking skillets. Cast-iron bathtubs usually have a porcelain enamel surface that's acid resistant.

Cast iron is strong and durable.  Its various uses include pipes, machinery parts, buildings and bridges as well as everyday cast-iron cooking skillets.

Cast-iron bathtubs usually have a porcelain enamel surface that's acid resistant.  But over time, using the wrong cleaners can cause pitting and scratches and trap dirt in the porcelain.

Employ safe cleaning techniques to keep your cast-iron tub looking good for a long time. 


Vinegar and Baking Soda

Either use a spray bottle filled with white distilled vinegar or pour the vinegar directly on the tub's surface.  Then, sprinkle baking soda evenly over the vinegar.

Using a no-scratch scrub brush or sponge, apply pressure and scour the bathtub as the mixture foams.  Let sit for a few minutes, then rinse with hot water.

These cleaning materials are also environmentally friendly. 


Stain-Erasing Sponges

Wet a stain-erasing sponge, such as Mr.  Clean Magic Eraser, and squeeze out excess water.

Apply pressure to the sponge, scrubbing the bathtub surface and concentrating on stubborn stains.  Rinse the bathtub with hot water after cleaning.


Bathtub Scrub with Bleach

Apply a no-scratch bathtub scrub with bleach, such as Soft Scrub with Bleach, to a no-scratch sponge.  Using a circular motion, rub the sponge over the bathtub's surface, concentrating on stubborn stains.

Let sit for a few minutes, then rinse the tub with hot water. 


Liquid Detergent

Another gentle cleaning method involves mixing one tablespoon liquid detergent (such as Dawn, Palmolive or Joy) with one gallon hot water and using a no-scratch sponge to wipe the surface of the bathtub.  Rinse with hot water.

About the Author

Originally from Indiana but now based in upstate New York, Lisanne Jensen has written professionally since 1988. Her journalism career includes government and features reporting for several Indiana newspapers, book editing, and marketing/graphic design. She holds Bachelor of Arts degrees in journalism and French from Indiana University.