Asked on Dec 04, 2017

How do I get a fiberglass shower floor clean?

Lisa sandlin
by Lisa sandlin
How do I get a fiberglass shower clean? Also how do I get bad soap build up off shower glass. I have tried everything. Soda & hydrogen peroxide, bleach, comet nothing is working. Also, has Anyone ever used “rustoleum tub and tile “ if so did you get a good result. I’m curious if I could use that on the fiberglass in the shower??
Fiberglass shower floor
Opinions or feedback on this product and has anyone used it on fiberglass?
Major soap scum buildup
More soap scum buildup I cannot get off. Please help!!!
  26 answers
  • Kay Kay on Dec 04, 2017

    to clean a really filthy, scummy and stained fiberglass tub, shower etc, you simply need to make sure the fiberglass is dry, then spray a can of oven cleaner over it all. It may take more than 1 can, depending on size of shower or tub. It will also work to clean soap scummy glass doors too. Then turn on the exhaust fan and close the bathroom door and put a sign on the door to keep everyone out for a couple hours or so. When you go back in there, open the window and leave fan on. WEAR RUBBER GLOVES. Take a green scrubby pad, and scrub down all the fiberglass surfaces, starting with the bottom surfaces and working your way up, rinsing as you go. You could use a scrub brush instead, but the green scrubby pad is the most effective tool to get absolutely everything off, without missing areas. Use the same method for the glass clean-up. Mind you, this is the only solution I've found that works when your traditional bathroom cleaners are not strong enough to do the job. And after the whole thing is cleaned up and amazing looking, you should never have to do it again, as long as you do a weekly cleaning of all the fiberglass in the bathroom, using conventional bathroom cleaners, or baking soda paste etc. My husband dreamed up this idea when we were getting ready to flip a horrible property we'd purchased and we were trying to figure out what could be saved and what had to be replaced.

    • See 2 previous
    • Kay Kay on Dec 10, 2017

      you're right Brenda, the serious chemicals in bowl cleaner would also handle the job, but the main problem would be getting it to 'grab' onto vertical surfaces! The spray foam formulation of oven cleaner hangs on perfectly to vertical shower walls, and allows it to stay put and clean, clean, clean, until you're ready to scrub it off.

  • Darlene Phillips Darlene Phillips on Dec 04, 2017

    I use Chlorox Clean Up for every hard problem, spray it on, let it sit and scrub or just rinse off.

  • Karen Tokarse Karen Tokarse on Dec 04, 2017

    Kay is absolutely right. Heavy Duty Easy Off works like every time!

  • William William on Dec 04, 2017

    Easy Off No Fume Oven Cleaner in the BLUE can for the fiberglass. spray it on till it liquefies. Rinse well. For the glass I use a bunch of used fabric softener sheets wet with vinegar. I can't say why but it does work. For painting the fiberglass prep is the key for a lasting finish. Read and follow the instructions.

  • Jewellmartin Jewellmartin on Dec 04, 2017

    Use a flat sink stopper over the drain. Since you know the shower is clean, go now to bleach. Pour in at least two cups/one pint. Leave the room and let it sit for a couple of hours. Make sure you can breathe safely, then remove or push the stopper aside. Turn on the cold water and let it rinse the shower pan. Be aware that fiberglass does turn darker with age. And Rustoleum fiberglass/shower paint is good quality. But paint on any surface exposed to water often is likely to peak or chip. Best wishes 😇

  • Debra Debra on Dec 04, 2017

    I have had success with Vinegar and Dawn mixed together. 1 cup white vinegar mixed with 1 cup Dawn dish detergent 9the original blue one) Put in spray bottle. Spray on and let sit for one hour. Rinse

  • Chubby58 Chubby58 on Dec 04, 2017

    I make a paste of Cascade (powdered dish washer detergent) and smear it over the entire area. Wait a couple of hours, then scrub well and rinse.

  • Wanda Wanda on Dec 05, 2017

    Boats are made of fiberglass and look how beautiful they are! Paint once and done. Soap scum will be nothing to clean compaired to barnacles. check it out. I'm serious. Have done it.

    • Lisa sandlin Lisa sandlin on Dec 05, 2017

      Did you use the paint I posted? The spray paint? And yours did come out looking good? If you posted a pic I cant find it. Thank you so much for your response I’m at a loss. The directions on the spray paint don’t say you can use it on fiberglass so I didn’t know if I should or not.

  • Sheri Hanson Sheri Hanson on Dec 05, 2017

    I like barkeepers friend powdered cleanser for fiberglass.

  • Bridget Anderson Duncan Bridget Anderson Duncan on Dec 05, 2017

    Try the stuff called "The Works" you can get it at dollar tree or Wal-Mart. It works magic I promise

  • Bridget Anderson Duncan Bridget Anderson Duncan on Dec 05, 2017

    Try the stuff called "The Works" you can get it at dollar tree or Wal-Mart. It works magic I promise

  • Wanda Wanda on Dec 06, 2017

    I did this a few years back and used a paint brush not a spray. You need to go to a marina and explain what you want to do or google fiberglass boat paint. ( I just realized you are in Texas ), A marina might not be avalable. My son was painting his boat and I used the leftover paint. Let me know how it goes.



  • magic eraser....amazing.

  • Beth Beth on Dec 08, 2017

    Yes! Magic eraser works great! I also use Comet liquid with a scrub brush for regular cleaning.

  • Mogie Mogie on Dec 08, 2017

    Easy off oven cleaner in the blue can.

  • Beth Baldridge Beth Baldridge on Dec 09, 2017

    I use the spray Comet Bathroom Cleaner. Spray and let it sit for a bit. Then you can wipe it off with a cleaning rag and water. If you still have streaks of yuck...just spray those areas again. It works amazing!!!

  • Cat18041169 Cat18041169 on Dec 09, 2017

    Comet is abrasive, but Barkeepers Friend or good old Bon Ami cleanser will not scratch. Magic erasers are a little expensive but I love them.

  • Jaz12466909 Jaz12466909 on Dec 09, 2017

    CLR kitchen and bathroom foaming cleaner. I got it at Home Depot. Use on the glass it takes off all the soap sum and krud. Wear gloves. Its the only thing I found that will clean the glass!

  • Linda Brannen Linda Brannen on Dec 09, 2017

    my husband always wipe down the hull of our boat with muriatic acid. it would take off stains. if it works on boats it's got to work on a fiberglass shower. just go to a pool store and get that non smelly type. you still need good ventilation and and be sure to wear gloves while using an Old Rag to wipe it down.

  • Sue Morse Sue Morse on Dec 09, 2017

    I used 20Mule Team BORAX. I followed the directions , sprinkled powder on damp sponge and began wiping down glass shower doors (water scale and soap scum) , walls, tub and fixtures. Beautiful! Worked like magic. I am so pleased. Didn’t have to deal with fumes or gloves either.

  • Nancy Nancy on Dec 09, 2017

    I love using 409 spray it works great

    i have used on my white teenie shoes too looks like i just bought them good luck!!!!!

  • Kandis Kandis on Dec 10, 2017

    I use Bounce dryer sheets for both the shower and the glass. I take a few sheets in with me when I shower and scrub away. Once I am done and the glass drys, I use Pledge Dusting spray, on the in and outside and buff till it shines. The Pledge beads the water. Everything stays clean longer

  • Debra Kemp Debra Kemp on Dec 10, 2017

    When i had a textured fiberglass tub that would not give up the grim and color I used CLR on a wash towel. I got it real wet and laid it on an area. After about 30 minutes i removed it. It was spotless. Repeated until i got the whole thing spotless. No scrubbing required. The one caution i have is when i did the area around the drain it became discolored; took off the shine. The bottle said good on chrome so I guess I had fake chrome.

    With a bit more work it’s great on glass. I’ve also used old fashioned razor blade tool. It holds the blade so you have the full blade to get under the soap scum. It comes off like paint would. Good luck

  • Lisa Lane Lisa Lane on Feb 06, 2019

    Maybe its not soap buildup but hard water stains. Have you tried lyme away? Also...try the Mr Clean for the fiberglass. They work everywhere. I also think that the key to a clean shower is to clean it often and rinse with a RInseroo. Makes life so much easier!

  • Chas' Crazy Creations Chas' Crazy Creations on Aug 01, 2022

    I have several cleaning tutorials that might help you