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Obstinate Tub/Shower Stain

 
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Old 07-11-2019, 08:23 PM   #1
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Obstinate Tub/Shower Stain


Don't know what this is but have scrubbed with household cleaners, denatured alcohol, nail polish remover and acetone all with zero effect. Ideas?

Lacking an answer, maybe I'll shop grey splash guards...if it will cover.

But you don't see too many finishes this shade of grey.
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Old 07-11-2019, 08:25 PM   #2
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Re: Obstinate Tub/Shower Stain


porcelain or gel-coat?

looks like a stain coming through the finish.

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Old 07-11-2019, 08:39 PM   #3
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Re: Obstinate Tub/Shower Stain


Looks like a rust stain , try something like CLR . Might have to leave it on the surface for a while .https://www.amazon.com/CLR-Calcium-R...49103251&psc=1
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Old 07-11-2019, 08:40 PM   #4
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Re: Obstinate Tub/Shower Stain


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porcelain or gel-coat?

looks like a stain coming through the finish.
Porcelain.

A winning combination given the matching shorty toilet that's only a lifetime off.
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Old 07-11-2019, 08:43 PM   #5
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Re: Obstinate Tub/Shower Stain


try a polishing compound.

go EASY.....

you can also try toothpaste and/or baking soda.

GO EASY.....
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Old 07-11-2019, 08:48 PM   #6
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Re: Obstinate Tub/Shower Stain


Looks really seated in there. The three dark spots seem raised ever-so-slightly.

Could something be propping from down under?

Actually the stain is goes wider that most splash guards I've seen...

Last edited by artinall; 07-11-2019 at 08:51 PM.
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Old 07-12-2019, 12:25 PM   #7
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Re: Obstinate Tub/Shower Stain


You know... you can't always polish a...

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Old 07-12-2019, 03:06 PM   #8
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Re: Obstinate Tub/Shower Stain


I'd go with oxalic acid. Or a sledge, either will do.
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Old 07-12-2019, 05:29 PM   #9
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Re: Obstinate Tub/Shower Stain


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I'd go with oxalic acid. Or a sledge, either will do.
I was thinking of a running head start down the hallway spearing a breaker bar. I'll find what's ever supporting it through the side.
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Old 07-12-2019, 09:08 PM   #10
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Re: Obstinate Tub/Shower Stain


Try Barkeepers Friend.
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Old 07-12-2019, 09:12 PM   #11
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Re: Obstinate Tub/Shower Stain


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Originally Posted by artinall View Post
Looks really seated in there. The three dark spots seem raised ever-so-slightly.

Could something be propping from down under?

Actually the stain is goes wider that most splash guards I've seen...
Use a new blade on that first to scrape... you can also try some ceramic glass top compound for the rest...
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Old 07-17-2019, 06:02 PM   #12
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Re: Obstinate Tub/Shower Stain


So how'd it all work out?
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Old 07-17-2019, 06:19 PM   #13
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Re: Obstinate Tub/Shower Stain


We're still together. Got sidetracked by other destruction in the unit.

Will try razor, baking soda, clr tomorrow since this is what I already have.
Others to follow...

Thanks much for asking KAP.
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Old 07-18-2019, 07:09 PM   #14
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Re: Obstinate Tub/Shower Stain


Tried working those three which made no change.


- To resume in the week or so ahead.
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Old 07-19-2019, 08:48 PM   #15
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Re: Obstinate Tub/Shower Stain


CLR, vinegar, or an Oxy-cleaner, Hydrogen Peroxide?

might need several hours with damp "plaster" soaked with the reducing agent to soak into the porcelain that is stained. or surround with putty dam and "drown" with liquid agents.....

Strong acids will destroy porcelain.

don't ask how I know....
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Old 07-19-2019, 09:08 PM   #16
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Re: Obstinate Tub/Shower Stain


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Originally Posted by Fouthgeneration View Post
CLR, vinegar, or an Oxy-cleaner, Hydrogen Peroxide?

might need several hours with damp "plaster" soaked with the reducing agent to soak into the porcelain that is stained. or surround with putty dam and "drown" with liquid agents.....

Strong acids will destroy porcelain.

don't ask how I know....
CLR will also destroy marble, removes all of the color
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Old 07-19-2019, 09:54 PM   #17
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Re: Obstinate Tub/Shower Stain


Seriously. Try barkeepers friend. You can get it anywhere and it think it’s less than $3. It’s removed things from all types of surfaces that I thought would never come out. If that doesn’t do the trick, it’s prob there to stay.
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Old 07-20-2019, 05:57 AM   #18
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Re: Obstinate Tub/Shower Stain


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Originally Posted by EricBrancard View Post
Seriously. Try barkeepers friend. You can get it anywhere and it think it’s less than $3. It’s removed things from all types of surfaces that I thought would never come out. If that doesn’t do the trick, it’s prob there to stay.
Will try when I have the chance.

Tried clr.

The stain seems in there, so it may not come out. Buying bottles may not matter.

Have oxy on deck for something else and will give that a test. Then probably barkeepers...
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Old 07-20-2019, 10:38 AM   #19
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Re: Obstinate Tub/Shower Stain


x2 for barkeepers friend. That stuff has worked miracles for me and the price is right. If its a true porcelain dont be afraid to get some waterproof 220 sandpaper and use a little elbow grease. Its amazing what that combo can do on discolored porcelain. Ive even gottten stains off the inside of toilets after a rusty auger has been run down it and bleach, crl, ect wouldnt do anything.

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Old 07-20-2019, 07:03 PM   #20
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Re: Obstinate Tub/Shower Stain


RE: sandpaper, start easy, 1000, 800,600, 400,320 then the 220

A blind man can see 220 scratches on glass type finishes, IMHO

Stainless steel wool??? maybe not?

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