How To Remove Tough Stains From A Fiberglass Tub

Dreaming of a spotless tub and wishing to know how to remove tough stains from a fiberglass tub? You can quickly get those nasty stains off using the correct method. Simple household items can get it spotless no matter what caused the tough stains on your tub. So, what do you need to do to remove the stains on your fiberglass tub?

To remove tough stains from a fiberglass tub, begin by gathering materials like baking soda, dish soap, white vinegar, etc. Fill the tub with water and apply the baking soda before leaving it to sit for some time. Mix a concoction of white vinegar and other items with the baking soda and scrub around the basin. Finally, rinse out the tub.

In this exciting post, I’ll show you how to get tough stains out from a fiberglass tub easily and quickly. Ensure you read to the end, so you won’t happen to skip something that may prove helpful.

My Quick Overview (30 Sec)

  • Removing tough stains from a fiberglass tub will require some elbow grease, a host of cleaning agents, and other solutions.
  • The process is lengthy but effective, beginning with filling the tub with a baking soda and water mixture and allowing it to stand.
  • Next, apply a mix of dish soap, vinegar, hydrogen peroxide, borax, lemon juice, and rust remover. Leave it for 30 minutes, then scrub the tub with a soft-bristled brush.

What Is A Fiberglass Tub?

FRP, short for “fiberglass reinforced plastic,” is constructed from layers of thin glass strands. These strands are braided together and then melted to conform to a mold. 

Once the desired form is achieved, a resin gel coat is applied and sprayed over the surface. It’s simple to set up and one of the least expensive options for bathtubs. 

The ultralight material tub is typically seen in homes with more than one storey. This is because it doesn’t require extra support between the bathtub and the floor. The average lifespan of a fiberglass tub is 10 to 15 years.

How To Remove Tough Stains From A Fiberglass Tub

You can remove the tough stains on a fiberglass tub with straightforward processes. Below are the steps you need to take to get your tub to its original shine:

1. Get Your Materials

You’ll need baking soda, dish soap (preferably from Dawn), white vinegar, hydrogen peroxide, and borax. Also, you’ll need some lemon juice, industrial rust remover, a spray bottle, microfiber fabric, a soft bristle brush, and a cup. All should be available at the nearest store or hardware store.

2. Apply Baking Soda

Begin by filling the tub with water. You have to do this so that the baking soda will stay put. Afterward, put some baking soda in the bath.

3. Give It Some Time

Put that aside for a minute while you fill a spray bottle with equal parts water and white vinegar. Ensure you mix your water and vinegar in the correct ratio of 1:1 for the best effect.

4. Apply Your Concoction

Apply the concoction by spraying it into the baking soda mixture. Make sure the baking soda is well-saturated. You should get this sign with some sizzling in the water from the chemical reactions.

5. Spread The Mixture Around The Whole Bathtub

Once the mixture has stopped fizzing, apply it to the whole bathtub by moving the towel around in circular motions.

6. Leave It To Rest

Give it 30 minutes to rest. You may need to give it more time if the stains have piled up badly.

7. Scrub A Little More

More scrubbing is required to eliminate all debris. Use the towel and touch the affected areas again more intensely.

8. Rinse

Put some water in a cup and use it to flush down the mixture. Ensure the tub is thoroughly rinsed out.


The size of the tub alone can discourage you from doing what has to be done. However, I believe you have found the process in this post simple and straightforward. Now that you know how to get rid of tough stains from a fiberglass tub, you no longer need to endure the filth!

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Author at Huliq.

Written By James Huliq