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Unread 01-06-2012, 05:36 PM   #1
cdb5
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New backsplash grout behind range turned yellow

Hi everyone. We had kitchen remodeled. The grout in the area of the backsplash that is behind the range has already discolored, the whole area, from where the range hits the wall all the way up to the level of the hood. It isn't stained,it is literally all of the grout, even up high. We hardly have used range, don't even fry stuff, at most a pot of water was boiled maybe 10 times total, and have been very careful that nothing splashed it. The rest of grout in kitchen is white and looks fine. The tiles are marble. Any idea why just this area yellowed so soon, was installed at end of November 2011.Thanks.
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Unread 01-08-2012, 10:37 AM   #2
doitright
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Hi Danielle, Welcome!

Sorry for the delay, I missed your thread.

Could you give us the exact name of the grout Manufacturer and grout used?

Was a sealer applied? If so, which one?

Is this a gas, or electric cooktop? Not that it matters, but I thought I'd ask (just in case).

What material was the marble set with (mastic or thinset)?

How much time for the stone to dry before grouting?

Can you post a picture?
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Unread 02-08-2012, 12:50 PM   #3
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yellowing grout over range

I am experiencing the exact same problem above my range. Our remodel was complete in August 2011 and my range use is the same as yours...no frying, simple use and clean environment. The yellowing is restricted to the area over the range and even above the wall hood..nowhere else. The tiles themselves are clean but the grout is yellow...
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Unread 02-08-2012, 02:57 PM   #4
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Hi Lynn, Welcome!

I ask you the same questions as I asked Danielle.
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Unread 02-13-2012, 08:34 AM   #5
lynns1228
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yellowing grout over range

Hi John

The grout is Tec: Bright White with Boost additive. No sealer. This grout is applied around white shiny 2x6 subway tile. There was a day between tile application and grouting.
If you look straight on, you cant even see the grout lines between the tiles on the rest of the tiling job, but above/under the hood and above the gas range, the grout has a distinct yellow color. I showed this to my contractor over the w/e and he agreed and was going to contact the installer.
Regards,

Lynn
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Unread 02-13-2012, 08:51 AM   #6
doitright
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Hi Lynn

So far, it doesn't make any sense. Talk to TEC technical department to see if the Boost could have affected the grout. I know if it did, it should be all of the grout.

Was thinset or mastic used?

Can you post a photo?
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Unread 02-13-2012, 09:46 AM   #7
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What a bummer for both of you guys! I am very interested to know why this yellowed in only this area. Did you use any cleaner on it? Was the BS installed at the same time, with the same stuff as the rest of the tiles? Scout
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Unread 02-13-2012, 02:35 PM   #8
Mike K.
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Dear Lynn:

Thanks for posting your problem. I'll pass the details over to our Technical Team and see if they can shed some light on why this is happening.

In the meantime, can you post a photo? This may help in finding out what's causing the problem.

Thanks!

Best regards,
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Unread 02-13-2012, 02:42 PM   #9
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Lynn, I've been thinking about this and I'm thinkin' someone might have wiped that area down with bleach and did not rinse it. That would account for the isolated area. ??? Scout
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Unread 02-14-2012, 04:58 AM   #10
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Just spit balling here...

Lynn replied that she has a gas range (no word from Danielle). The by-products of an open gas flame can cause yellowing of some polymers. It is usually a bigger problem early in the cure/dry period, like the first couple of days. Propane is worse than natural gas in this regard. Could be the polymers in the grout, the boost, or the combination of the two.

Not mentioned was if these were new stoves installed during the remodel or if the original appliances were returned. New cooking units, both gas and electric, have oils and such from manufacturing that need to be burned off after installation. Stains could be a result of that exhaust.

Can't rule out evil spirits just yet either
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Unread 02-14-2012, 03:36 PM   #11
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Dear Lynn:

I passed the information on to our technical team and they’d like to talk to you directly if you would like to provide your contact info.

Or if you’d rather, simply give them a call at 800-832-9023. We want to make sure we help you get this resolved and our technical team is happy to assist.
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Unread 02-23-2012, 05:13 PM   #12
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Do you have any attached photos?
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Unread 02-23-2012, 05:19 PM   #13
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I'd like to know how this works out. Scout
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Unread 02-23-2012, 08:28 PM   #14
doitright
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Hi Scout

Me too!
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