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Discoloration in a Fiberglass Bathtub

Category Bathroom
Fiberglass tubs can become discolored over time. This page offers advice for how to fix a discolored fiberglass tub.


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By 3 found this helpful
January 1, 2011

I bought a new tub surround and now the existing tub looks very discolored. What can I use to clean a discolored tub?

By andie from Cleveland, OH


January 5, 20111 found this helpful

I'd suggest trying GooGone. Our fiberglass tub had done the same thing and one day, while I was recaulking the tub, I accidentally knocked over a bottle of GooGone. I wiped it up right away and was surprised to see that the tub was white where the liquid had spilled.

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January 16, 20110 found this helpful

My husband and I are moving into a new rental house and in the hall bathroom the tub was awful! It had years of some kind of black grime on it, looked like it had never been cleaned and the landlord thought he'd have to get it rebathed. I told him I could get that stuff off with a little elbow grease. I used full strentgh Purple Power and a sponge. Poured it on the sponge and wiped it down, it looks brand new! I also used it to clean the carpet, which was also very dirty and had some heavy duty dirty spots. I put Purple Power, about a 1/4 cup and the rest water in the shampooer, spots are gone and the carpet is clean!

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March 28, 20130 found this helpful

Well, we bought a brand new double wide 18 years ago, and we have re-done every single room in our house. No more strips....all drywall....wainscott, chair rail, baseboards, quarterr round arounnnnd the fireplace and just finished putting bead board up in our room and painted it a deep red color. Bought new comforter set and new curtains. Just finished putting down wood floors in our bedroom also, and got new throw rugs for each side of the bed. Can't wait til I am done with it all. Really looking forward to seeing it all done.



But the garden tub in master bath has skylight above it and it has the most terrible stain in it. First just discolored a little, now big black ring from bottom of tub to about 4 inches above bottom. I have tried CLR, didn't work....comet, didn't work....bleach, didn't work. It's like the discoloration in all the way through the fiberglass round garden tub. I give up. Anyone have any suggestions? or even something that has been proven to work? I can not stand this.. It looks horrible. Looks like it hasn't been cleaned in months.....and it has. lol....Anyone?

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August 15, 20160 found this helpful

Where do you get Purple Power? Thanks

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August 22, 20160 found this helpful


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August 6, 20180 found this helpful

You can get purple power at Wal-Mart

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August 30, 20180 found this helpful

Dollar general, I use it often in my cleaning business as a degreaser

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March 10, 20190 found this helpful

Liar. Too stupid. Get an honest life

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ThriftyFun is one of the longest running frugal living communities on the Internet. These are archives of older discussions.

July 29, 20080 found this helpful

The floor of my fiberglass tub has turned a yellowish color and I have tried almost everything. What will make it white again?

Nancy from Tallahassee


Discoloration in a Fiberglass Bathtub

Water here is orange to black and for years I thought I'd be stuck with the discoloration. Out of desperation I tried 'The Works Disinfectant Toilet Bowl Cleaner' on the fiberglass tub. Its label states "Removes Rust, Lime Scale and Hard Water Stains". It was applied several times and even left on overnight. It does work; costs $1-1.50, depending on which store it's offered. Another thing that works is pumice stone even on a stain caused by oil of wintergreen. Amazingly, pumice does not scratch the surface. (08/29/2007)

By gator

Discoloration in a Fiberglass Bathtub

Don Aslett's Showers 'n Stuff. Takes all the film, discoloration, etc. off of fiberglass. It's the only thing that's ever worked for me. (08/30/2007)

By Marna

Discoloration in a Fiberglass Bathtub

Spic & Span does work nicely & smells like soap. Pets won't go near it. Trisodium Phosphate is good too. I don't know if either would fix the tub but worth a try. (08/31/2007)


By Linne Dodds

Discoloration in a Fiberglass Bathtub

I swear I read on here that hydrogen peroxide will do the trick. I have the same problem from a skylight. That's what I'm going to try. (08/31/2007)

By Sandy

Discoloration in a Fiberglass Bathtub

I just found that Dawn Power Disolver, found in your dish soap aisle in a blue spray bottle, works great. You spray this on wait 10-15 minutes then just simply go wipe it off. Use a scrub brush if it has been discolored for a long period of time. We just moved into our home and the bathtub was almost an orange color, today it is back to it's original color and I have only worked on it for about 1/2 an hour with the Dawn Power Disolver! (01/16/2008)

By Roeshell

Discoloration in a Fiberglass Bathtub

My fiberglass tub has the same discoloration. It is not like a stain that can be removed with any cleaning product. It is also not from the sun because I have no window in this bathroom. It is not soap scum, mold or mildew. It is not an old tub. It has simply changed color and unfortunately I would have to replace it to fix the problem. I believe it is the brand of bathtub that does this because the neighbors bathtubs are the same as ours. Homes were built by the same builder so he probably got a deal on buying several bathtubs. Too bad the bathtub doesn't have a brand name on it so I could avoid that brand in the future. (03/10/2008)


By Barb

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May 11, 20070 found this helpful

When I built my home 15 years ago I thought I would save myself a lot of cleaning by installing a one-piece, white fiberglass surround bathtub and shower combination. But now there is a discoloration around the sides about 4 inches above the floor of the tub. It makes my bathtub always look like it has a scummy "bathtub ring" around it and I rarely even bathe. I usually take showers and when I bathe I fill the tub completely full. I hate the way it looks. I have tried removing it with bleach, soft scrub and 409. The "ring" is still there. Anyone else have this problem and have you found a solution?

Emma from Eastern Oklahoma


Discoloration on the Sides of a Fiberglass Bathtub

I don't have that problem, but I have found the product called Barkeeper's Friend to remove lots of "stuff" from bathroom fixtures. Quite inexpensive. You might want to give it a try. (11/08/2005)


By Mary A

Discoloration on the Sides of a Fiberglass Bathtub

Try Krud Kutter [at Lowe's or Home Depot] at $5.79 a spray bottle. My tub now looks new, as does the siding on my home [removed mold/mildew] my s/s kitchen sink, tile floor etc. It is non toxic and has very little odor to it. One of the best cleaners on the market! JoanDogs (11/08/2005)

By Joan

Discoloration on the Sides of a Fiberglass Bathtub

There is a great product on the market called "Bar Keeper's Friend." I highly recommend it! We had hard water stains on the bottom of our tub and it is the only thing that would remove them. Good luck! (11/08/2005)

By Robin

Discoloration on the Sides of a Fiberglass Bathtub

Have you tried Magic Eraser yet? Works great on bath tub rings. (11/09/2005)

By kelly

Discoloration on the Sides of a Fiberglass Bathtub

If the other more gentle remedies don't work, try Goof Off. It is sold in small cans around 8 oz. up to gallons. Check the home center stores. (11/09/2005)

By kidsNclutter

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January 1, 20110 found this helpful

Sun filtered through blinds onto a plastic bathmat has left yellow discolored marks on the tub floor. There are circles, from the mats suction 'feet' which are an orange and then an overall yellow.

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August 29, 20070 found this helpful
Click to read more ideas from older posts on ThriftyFun.
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