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Old 01-05-2014, 10:37 AM   #1
BNR
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New grout too light- acid wash or Mapei Grout Refresh??

My new grout job dried lighter than I had hoped for.

Mapei Keracolor S grout "chocolate".

What are my options to darken color.

I've read vinegar wash, or acid wash, or colorant.

Is Mapei Grout Refresh a good plan ?

or try cleaning acid treatments first?

Confused, Thanks
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Old 01-05-2014, 07:03 PM   #2
Tool Guy - Kg
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Hi, Allie.

1) How big of a job are we talking here?
2) Exactly how old is the grout job? Hours? Days? Weeks?
3) How wide are your grout lines?
4) Did you use sanded or unsanded grout?
5) And any chance you can share a pic with us?

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Old 01-05-2014, 08:30 PM   #3
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Hi Again,

This was a small bathroom floor about 10' x 4'.

Grout lines are 1/8"

Finished grouting 72 hours ago.

Sanded grout.


Grout looks lighter in person than the photo. (hope attachment worked-first time for me)

The grout also looks lighter or darker depending on which way the light is coming from. Reflectivity?

I read on another thread that when using sanded grout, the finished grout will be about the the color of the dry powder grout before mixing...True?
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Old 01-05-2014, 09:15 PM   #4
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Quote:
Originally Posted by Allie
I'd love to hear suggestions about what products (grouts) or techniques will give us the dark brown result that we would like.
One suggestion would be to do a grout test before committing to such a large area.

If you're asking how to darken the newly installed grout, there are grout stains available (Mapei makes one). I suggest you contact Mapei tech support for their recommendation.
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Old 01-05-2014, 09:18 PM   #5
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Like Bodie says, a grout stain will do it. Using a scrub brush, I would scrub a small area with vinegar and rinse it well. Let it dry and see if there is a difference.
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Old 01-05-2014, 09:21 PM   #6
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Allie, please don't start threads in different forums with the same questions. Results in confusion and duplication of effort on the part of the folks who want to help.

We can move this to the Advice forum if it's not really gonna be a cleaning or sealing thread.
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Old 01-05-2014, 10:31 PM   #7
Tool Guy - Kg
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Well, a grout colorant would do it. And with the glazed tile you have, staining of the tile from the colorant shouldn't be a problem. If you do use this product, please test it before committing to the whole project.

Dark colors on many cement based grouts are somewhat notorious for drying lighter than you want.

Me? I really, really like Laticrete PermaColor. I can rely on it to dry to the advertised color time after time. If I'm using a cement based sanded grout, it's PermaColor. Every time. If I'm using epoxy, it's Laticrete SpectraLock. I don't like color changing surprises after I've invested a lot into installing a tile floor and it's time to grout. This project isn't very big. And the grout lines are fairly narrow. And the grout is still relatively soft. If this was my project, I'd probably scratch it out (carefully...safety is paramount) and re-grout with PermaColor.

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Old 01-06-2014, 08:49 AM   #8
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Dear CX

I was actually trying to avoid confusion with the two threads.

One question is dealing with the grout already installed.

Other thread was seeking advice on future installation products and /or techniques...

Hope that's OK.
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Old 01-06-2014, 08:57 AM   #9
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Bubba-

I've read good things about Permacolor grout. It's advertised as "fast setting". How fast is fast? How will installation differ from the regular sanded grout I've always used?? Thanks
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Old 01-06-2014, 01:32 PM   #10
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I run into that all the time with darker colors and sometimes have to acid clean them to get any grout haze that may be left and then seal it with a Color Enhancing Grout Sealer such as Enrich n Seal, this will bring the the desired color out...
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Old 01-07-2014, 07:22 PM   #11
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Hi Allie.

Permacolor is a cement grout, and gets installed as other cement grouts do. Due to it being rapid setting, you'll need to mix smaller batches, be very fast, and/or have helpers cleaning soon after placing. Best to mix small batches til you get the hang of it, as many factors influence how long you have, like temperature & humidity to name a few.

Check the spec sheet, which lists the various times.
http://www.laticrete.com/Portals/0/d...ets/ds2500.pdf
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