How to you clean fiberglass shower stalls?

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We just bought a house that has less than lovely showers. They are fiberglass showers that have been stained by water/soap running down the walls. How do I clean them really well?

I know I cannot use abrasive cleaners or scouring pads like steel wool, as they will scratch the surface and then I will be really sad .. Any ideas?


  8 answers
  • Try CLR or Krud Kutter and a Magic Eraser. Or make a paste baking soda and peroxide.

  • GrandmasHouseDIY GrandmasHouseDIY on Feb 03, 2020

    You could also consider trying The Works toilet bowl cleaner if none of the other options gets it done. I had a fiberglass shower to clean that was covered in nearly ten years of soap scum, all that would get it off was The Works and then after that I still ended up taking a razor blade and very carefully scraped the walls down.

    • Barb Barb on Feb 03, 2020

      I had stumbled upon this earlier, but haven't tried it yet. Time to apply the elbow grease! thank you

  • Johnavallance82 Johnavallance82 on Feb 03, 2020

    Hi there,

    I would use a non scratch sponge and Shadazel or multi purpose cream cleaner or Barkeepers friend. Good luck!

  • Gk Gk on Feb 03, 2020

    The Works is a great product for fiberglass showers!

  • Kathy Gunter Law Kathy Gunter Law on Feb 03, 2020

    Lysol Power Scum cleaner in the blue trigger spray bottle with a Magic Eraser or a scrub brush.

    Wet & forget shower for a slower, no scrub solution. You can use 2x a week to accelerate the cleaning process then once a week to keep it clean.

  • Jody Jody on Feb 03, 2020

    Be as careful as possible to not scratch the Fiberglass any more than it might already be. That will make your job harder in the future.


    My mother decided to clean my oven racks in my nice porcelain tub. She sprayed them with “easy off“ oven cleaner which not only removed the grease but the porcelain wherever it landed and sat.


    That was about 40 years ago. What notice is a soap ring of bathtub ring where the sealant is gone. I spoke with one of our bathroom remodelers. The bathroom is white, ceramic floor and walls. So the tub ring isn’t attractive. Too much money to try and reglaze at the time. His suggestion was as needed to fill the tub above the ring, add soap and bleach, let sit until it’s back white. Rinse well. Then I used jubilee kitchen wax all over the inside. Works great, no scratching.


    Oxyclean came out, switched over, works great. Found the white paste cleaner that’s a white clay from France. It cleans without scratching, it leaves a better and longer lasting shine and protection than the kitchen wax. It comes under many names, look at the “as seen on tv” stuff for this white paste.


    So you know I know how you feel, when we bought the house the fiberglass shower in another bathroom was off white. Looks great with white ceramic tile. And it wasn’t shiny. I took a toothbrush in and every time I showered I’d work on one area. Finally broke through. I called the lady we bought the house from and asked her what she recommended for that shower. Played dumb. She used one of those foaming bathroom cleaners. Sprayed it on and let it dry. Rinsed it when she took her shower. When it was dry a few hours later she then waxed it with the Johnson paste kitchen wax. That’s where I got the idea of using it in the tub.


    I don’t remember what my bathroom friend recommended at the time, it needed to be something non toxic. But as I cut through 10 years of soap scum and wax buildup I found a shiny white shower. Now I only need to spot clean places while in there to keep it white. But it scares me that I was getting ready to use comet and steel wool. I’m so glad I asked. And I see you’ve already received some great suggestions.

  • Lucky Home Today Lucky Home Today on Feb 03, 2020

    Try a soft scrub to lift the soap reside and grime.