How to Remove Stains from Fiberglass Tub

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Fiberglass tubs are susceptible to rust build-up because of the mineral contents of bathwater. Iron deposits in water generally cause rust stains on fiberglass tubs as they’re exposed to oxygen. When your bathtub has unsightly rust stains, taking a bath can be stressful rather than soothing. Fortunately, removing stains from bathtub isn’t too hard, and you could do it on your own with a few things that are easily available at home. Below, we have provided instructions on how to remove stains from fiberglass tub.

Removing Stains from Fiberglass Shower Tub – Instructions

· Get the Supplies

First, get the things you will need to remove stains from the fiberglass tub. These include a soft nylon brush, sponge, white cotton cloth, acetone, and baking soda.

· Dampen the Stain and Spread Baking Soda

Damp the rust stains with water and spread baking soda all over the affected area. Use a wet brush to gently scrub the stain with baking soda, forming a paste. Allow this paste to sit for an hour.

· Wipe off the Baking Soda

Wipe off the baking soda off the stain with a damp sponge. Remove all of it completely.

· Rub the Stain with Acetone

If the stain isn’t gone, rub it gently with a white cloth dipped in acetone. This should get rid of the stains.

· Rinse the Area

Once the stains are gone, use a wet sponge to rinse the area and then clean your tub with water to remove any traces of rust.


Q.1) How to remove rust stains from bathtub using lemon and salt?

Both salt and lemon have some exceptional cleaning properties. If baking soda is not easily available, you could use them for removing stains from your bathtub. You will need a microfiber cloth, salt, and two to three lemons to clean your bathtub. Follow these instructions for removing stains from your bathtub with the help of lemon and salt.

  • Squeeze the lemon over the affected area. Make sure the stains are damp so that the salt can stick to them
  • Sprinkle some salt over the stains and allow it to sit for three hours
  • Using a microfiber cloth, gently scrub the stains
  • Repeat the process if the stain isn’t completely gone
  • Rinse the tub with water to remove any lingering traces of rust

Q.2) How to remove rust stains from porcelain bathtubs?

Porcelain bathtubs can get very dirty if they aren’t cleaned regularly. Rust can also form on these bathtubs and leave unsightly stains, which can be hard to remove with just water. For removing rust stains from a porcelain bathtub, we suggest a mixture of tartar cream and hydrogen peroxide. Follow these instructions to remove rust stains with the help of hydrogen peroxide and tartar cream.

  • Combine tartar cream and hydrogen peroxide to create a creamy paste
  • Spread this paste over the stain and allow it to sit for ten minutes
  • Buff the affected area with a nylon brush until the stains are eliminated
  • You can use the paste of hydrogen peroxide and tartar cream to remove rust stains from the toilet too.

Q.3) How to remove stains from toilet?

Rust stains can build-up on your toilet bowl if it is not cleaned regularly. There are commercial cleaners – like Iron OUT Automatic Toilet Bowl Cleaner – available in the market that you can use to remove these stains.

Iron OUT Automatic Toilet Bowl Cleaner, Repel Rust and Hard Water Stains with Every Flush, Household Toilet Cleaner, Pack of 1, 6 Tablets, White
  • Best on Rust: #1 Heavy-Duty Rust Stain Remover Brand
  • Specifically formulated to repel rust and hard water with every flush of your toilet
  • Convenient rust stain solution; Long-lasting formula prevents rust stains from forming in toilet bowl for up to 45 days
  • Safe for use with all toilets, internal toilet components, plumbing and septic systems
  • Simply drop tablet in toilet tank and let Iron OUT do the work for you

Last update on 2023-12-03 / Affiliate links / Images from Amazon Product Advertising API

However, if you don’t water to use harsh chemicals, then just remove stains through a more natural method as discussed below

  • Shut off the main valve to your toilet before you start cleaning your toilet. You should be able to find this valve behind your toilet
  • Using a cup, remove as much water from the toilet bowl as possible
  • Add vinegar to the bowl and then sprinkle some baking soda onto it
  • Use a nylon brush to swish the mixture of vinegar and baking soda around the toilet bowl and allow it to sit for 15 minutes
  • Then scrub the stains with the toilet brush
  • If the stains are not completely removed, add a small amount of lemon juice to the affected area and let it sit for 10 minutes
  • Then scrub the bowl again to remove all traces of rust  
  • Now turn the water on and flush

Final Thoughts

We hope you now understand how to remove stains from the fiberglass tub. We have shown you how you can clean your fiberglass tub using home ingredients. If you want to opt for commercial cleaners to remove stains from your bathtub, we recommend you go with the Green Gobbler Rust Away.

Green Gobbler Rust Away | Multipurpose Rust & Iron Stain Remover | Rust Removal | Iron Stain Removal | Toilet Stain Remover
  • PROTECT YOUR THRONE - Don’t let unsightly stains send your guests running for the hills. Use this powerful formula to clean out your toilet with little effort. Your guests and your toilet will thank you!
  • OBLITERATE STAINS - Don’t sit there scrubbing at stains for hours to no avail. Let Rust Away fight the rust and iron stains for you! No dirty work required.
  • EASY APPLICATION - This product comes with pre-measured packs for easy application. Simply pour in one packet, let it sit for two hours, then flush!
  • SAVE MONEY - Don’t spend money on a water treatment system. Use Rust Away instead, which will rid your toilet, sink, and tub of stains in as little as two hours, all without you having to lift a finger.
  • SAFE FOR PIPES & SEPTIC SYSTEMS - You don’t have to worry about damaging your plumbing. Our formula is biodegradable and safe for pipes and septic systems. *** 30 DAY HASSLE FREE MONEY BACK GUARANTEE – We value our customers and we stand behind ALL of our products 100% with no questions asked! If you are not pleased simply call or email us with your order number and we will reimburse you in FULL! ***

Last update on 2023-12-03 / Affiliate links / Images from Amazon Product Advertising API

We have also shown you how to remove stains from porcelain bathtubs and from toilets. If you have any other questions, feel free to shoot us a query. We will be more than happy to answer it for you.

Removing Stains from Fiberglass Shower Tub

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