Ceramic Tile Advice Forums - John Bridge Ceramic Tile

Welcome to John Bridge / Tile Your World, the friendliest DIY Forum on the Internet


Advertiser Directory
JohnBridge.com Home
Buy John Bridge's Books   Buy a TYW Shirt

Go Back   Ceramic Tile Advice Forums - John Bridge Ceramic Tile > Tile & Stone Forums > Tile Forum/Advice Board

Sponsors


Reply
 
Thread Tools Search this Thread
Old 02-01-2010, 07:44 AM   #1
ejohnson
Registered User
 
Join Date: Feb 2010
Posts: 3
Dark Grout Turning Light

I installed a grey grout on porcelain tile on Saturday which is turning light colored as it dries. The grout is TEC - Accucolor Premium (sanded portland cement, polymer-enhanced). I mixed the grout properly and in accordance with the directions.

I have cleaned it with a 50-50 water/vinegar mix trying to remove the light coating to no avail. It looks the proper color when wet, but as it slowly dries, the light color returns.

The package warns against the potential for efflorescense and to use the TEC product "Like New" it happens. Is this the right approach?

Your advice is appreciated. See photo below.

Name:  0131002159a.jpg
Views: 1253
Size:  31.7 KB
__________________
Johnson

Last edited by ejohnson; 02-01-2010 at 09:27 AM.
ejohnson is offline   Reply With Quote
Sponsored Links
Old 02-01-2010, 09:07 AM   #2
bbcamp
Registered User
 
Join Date: Jul 2002
Posts: 30,305
Scrape the surface to see if the grout color below it is correct. If so, a acid scrub will help. However, if the color is consistant through out, then you won't get any help with the TEC product.
bbcamp is offline   Reply With Quote
Old 02-01-2010, 09:48 AM   #3
ejohnson
Registered User
 
Join Date: Feb 2010
Posts: 3
I scraped a small area of the grout surface and the proper color is below the surface.
__________________
Johnson
ejohnson is offline   Reply With Quote
Old 02-01-2010, 01:05 PM   #4
ejohnson
Registered User
 
Join Date: Feb 2010
Posts: 3
I met with the tile supplier today and he believes that I was too liberal with the tile washing and washed the grout's color pigment away. I can buy that as the tile is textured and took some work to remove the grout. He recommended that I use an AquaMix tile colorant which I will probably do tonight. My frustration level is high after carefully selecting the perfect tile matching grout only to have to "paint" the grout to make it look respectable.
__________________
Johnson
ejohnson is offline   Reply With Quote
Old 02-01-2010, 01:40 PM   #5
bbcamp
Registered User
 
Join Date: Jul 2002
Posts: 30,305
I'd use the colorant only after trying to scrub the top layer off with a stronger acid than vinegar and water. The TEC "Like New" is a stronger acid than vinegar, but may not be as stong as sulfamic acid.

In either case, let the acid dwell on the grout for a few minutes, agitate with a synthetic bristle brush and let dwell some more, then rinse. It still may take a couple applications.
bbcamp is offline   Reply With Quote
Old 02-01-2010, 01:46 PM   #6
Tool Guy - Kg
Moderator -- Wisconsin Kitchen & Bath Remodeler
 
Tool Guy - Kg's Avatar
 
Join Date: Feb 2005
Location: Oak Creek, WI
Posts: 17,547
Welcome to the forum, Johnson.

I wouldn't be too quick on painting that grout. Grout drying lighter than expected is a very, very common complaint. And a lot of pros who practically ruin their wrists twisting their sponges as dry as possible are given the standard industry response to light grout of, "you used too much water". While it may be true in your case....maybe it's not.

I'd wash it with vinegar (or escalate to something stronger like sulfamic acid), let it dwell for a minute or so, then scrub it with a nylon bristle brush a bit and rinse it off (use a wet vac if you have one). Rinse it a second time with water to neutralize the acidity and allow it to dry. Inspect to see if you have an improvement.

But...
Time for some patience...
You only grouted two days ago and it's not cured enough to be attacking it with an acid like this. So wait 'til this weekend before performing a test in an small, inconspicuous area. If you have your results you're looking for, proceed with the remainder of the project.
__________________
Tonto Goldstein….. but my friends call me Bubba

“We the people are the rightful masters of both Congress and the courts, not to overthrow the Constitution but to overthrow the men who pervert the Constitution”
-Abraham Lincoln
Tool Guy - Kg is offline   Reply With Quote
Reply

Buy John's New Book!   Tile Your World Online Store   Contractors Direct Tile Tool Store   Stonetooling.com   Tile-Assn.com


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Dark grout turning white, ceramic shower tiley Tile Forum/Advice Board 9 02-27-2013 12:20 PM
Dark grout turning WHITE!!?!?? esc Tile Forum/Advice Board 5 12-24-2008 10:53 AM
changing dark grout to light sorbate Tile Forum/Advice Board 3 04-11-2008 02:41 PM
Grout Turning Dark Elise Cleaning, Restoration and Sealing 10 09-09-2006 10:51 PM
Dark grout stained my light travertine Ortis Cleaning, Restoration and Sealing 8 06-29-2004 11:51 PM


All times are GMT -6. The time now is 08:40 PM.


Sponsors

Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright 2014 John Bridge & Associates, LLC