Gray Water Stain On White Carrara Marble Countertop

by Cathy
(Upland, CA)

White Marble Countertop Stain

White Marble Countertop Stain

QUESTION:

My contractor installed our bathroom countertop, which is white Carrara marble, without sealing.


After a little use we noticed a darkening of the marble around the faucet.

We think water has leaked under the faucet and stained the marble where the installer had cut it to place the faucets.

Anytime we use the faucet more water seeps into the marble around the faucet housing. Is there a way to "air out" the water stain?

And then seal the faucet area so that this will not happen again? Or are we stuck with gray areas around both faucets?

ANSWER:

If you have a leak from the faucet then of course the cabinet under the sink will be wet too. If you do have a leak then replace the faucet or have your installer fix it, etc. to stop the potential source of a problem.

I'm thinking it's probably not a leak. Water by itself will not stain marble. Impurities in water could, but not in a short time.

It's most likely caused by a caulk or plumbers putty your installer may have used around the faucet.

Remove the faucet and see what's going on.

To remove the stain, you'll have to make and apply a poultice.

You'll find complete step-by-step instructions on how to remove this and any other type of stain in the Removing Stains Manual.

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White Marble Help
by: Ryan

A poultice won't necessarily remove a stain in one shot. Two or 3 times is common. Tough stains like rust may require 5-6-7 times. So keep doing it as many times as needed until the stain is removed or you stop noticing improvement.

Remember... the plumber's putty was on the surface under pressure from the faucet, so it had ample time to absorb deep into the marble.

Each application will draw a little more of the stain out.... it's a process.

And although most stains can be removed, old or very deep stains may get lighter, but may be permanent to some degree.

A stone professional could remove the stain, but he would use the same method or the much more expensive method of grinding down the surface (possibly the entire surface to make all level) until the stained marble is removed and then re-finish the marble.


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White Marble Help
by: Anonymous

I have a polished white carrara countertop in my bathroom that has been stained around the faucets from plumbers putty. I have tried the poultice method 4 times now (2 times with talc and acetone, and 2 times with Miracle Sealants Liquid Poultice.) The stains have lightened slightly, but are still clearly visible. Any suggestions?

Are there professionals that may have a better time removing the oil stain from the putty?

Any advice would be greatly appreciated.



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Talc & Peroxide brands
by: Ryan

It doesn't matter which brands you use. Both are basic products that don't change significantly between brands.

12% (same as 40 vol) hydrogen peroxide is the same no matter the brand... same deal with talc. Any will do. You just need a highly absorbent material.

Good Luck!

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What Brands of Talc Powder & Peroxide?
by: Anonymous

What brand of talc powder and 12% hydrogen peroxide do you recommend to make this mixture?

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Mouthwash 'Stain' on White Marble
by: Ryan

Mouthwash is typically acidic. Acidic foods/drinks will etch marble. Could also stain.

Stains will make the marble darker. Etching will make the marble dull and/or lighter in color.

So, carefully examine your marble. Is the grayness actually just a dull spot or is it noticeably darker than the surrounding marble?

I'm assuming you have polished marble.

If etched and dull you'll need SCP- Marble Polishing Paste


If stained, you can't just spray on a cleaner and wipe it off. You'll need the Removing Stains Manual for step-by-step instructions to get a stain out.

Good Luck!




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gray stain on white carrera marble top
by: Anonymous

I have a gray stain on my countertop and I did have it sealed before I used it. I was wondering if it is from mouthwash. My husband usually spills it and I told him it is probably from that but I really don't know if it is or not. Can anyone tell me if it is and why this is happening.

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The forgotten sealer
by: Anonymous

Call your fabricator and ask them why he forgot to seal your counter top.

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