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Old 09-24-2008, 10:21 AM   #1
Willl
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mapeis opticolor

For grouting I am considering using mapeis opticolor. Does this stuff scratch polish marble though. In the instruction manual they state that it may scratch marble because it has aggragate in it but it does use the word "may" and in the instruction manual the picture of it being used it looks like they are using it on polished marble.

Also does this stuff yellow overtime. I will be using the white. Thanks
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Old 09-24-2008, 05:24 PM   #2
ceramictec
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Hi Willl,

being that the Opticolor is a sanded resin grout it takes some elbow grease with a scrub pad to work the grout.
this will possibly with to much pressure scratch a soft marble.

what type of marble are you using ?

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Old 09-25-2008, 11:33 AM   #3
Willl
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Stuff is no good for my application because it yellows overtime. I guess this opticolor stuff is just another epoxy.


Well sense I will be using unsanded polymer modified grout for this application that has 1/16" grout joints how to you guys handle the shrinkage problem with the grout. I have done this before and last time I did it I simply regrouted about 2 hours after application. Was wondering what the guys here did to overcome the shrinkage problem if anything. Thanks.
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Old 09-25-2008, 12:25 PM   #4
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with a 1/16" grout joint there isn't enough grout for it to shrink.

you need to use Unsanded grout for your marble then.
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Old 12-15-2008, 09:32 PM   #5
shad0w
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Is this true?
Does Opticolor yellow with time?
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Old 12-15-2008, 10:57 PM   #6
gueuzeman
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I mix the grout a little stiff, don't have shrinkage to speak of.

The "epoxy" grouts don't yellow over time, they start out that way. The resin is honey colored, it will never be true super white. I used the white spectra lock earlier this ytear on a super white porcelain, the tile was much whiter. Not bad, just not as white.

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