Advice needed on grouting this tile (picture) [Archive] - Ceramic Tile Advice Forums - John Bridge Ceramic Tile


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02-28-2007, 12:36 AM
I posted this in my Virgin Islands remodel thread but no one has responded it so I'm splitting it out.

I'd appreciate some input on my grout situation. I finished tiling the vanity wall and am ready to grout. The tile is 3/4" vitreous glass.

At first, my plan was to grout with the thinset. That's what at least tile specialty dealer (small glass mosaic) recommended.

More recently someone talked me in to using regular unsanded grout and I decided to go that route. I bought some white grout-- don't recall the brand.

However, there are areas where the white thinset pushed through and is essentially flush with the tile. Not the entire thing, but most of the first five sheets have this problem (where I used the ill-advised 1/4" trowel).

So what do you think-- just use the thinset? Scrape/saw down any prominent areas of thinset and use the unsanded grout? Use the unsanded grout without doing anything to the areas with "high" thinset??

Also, does anyone have suggestions as to how to deal with getting the grout out of the tiny pits and pores on the face of the tile (or preventing that from happening in the first place).

I'd like to start grouting later today so that's why I'm anxious for feedback.

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02-28-2007, 12:48 AM
Hi Jules
Don't use thinset for grout. Take a litlte time and clean the joints out with a knife or use a dremel with the grout removal bit. It shouldn't be to hard. Grout with your white grout and just do the best you can with the white spots when you clean up. I think the same person that came up with premixed thinset also figures thinset can be used for grouting. :scratch: Good luck.

02-28-2007, 03:55 AM
I just did a test swatch of grout using the thinset. Now I have a test patch with unsanded grout and one with thinset.

I actually like the one with thinset better. It looks more uniform, has less "staining" in the micropits on the glass face, didn't shrink as much as it dried, and just looks neater.

So now my question is this: Is is bad/wrong/foolish to use this thinset as grout? The thinset is Jamo "Multi-Purpose Flex". It seems to have worked beautifully for setting the tile. Those things are stuck down GOOD.

02-28-2007, 09:49 AM
It's 10:45 EST and I'm ready to start grouting. Unless I hear strong opinions (with explanations) as to why I shouldn't use the same thinset I used for setting for my grout, I'm going to proceed with using thinset as grout.

One tile specialist recommended this. I did tests using regular unsanded grout and the thinset and I like the thinset better. See previous post.

Please, someone with experience... please tell me if this is OK or if I'm about to make a big mistake. I'll start grouting in about an hour.

02-28-2007, 11:24 AM
Oh hell go for it. It the tropics "no worry maan"
good luck

02-28-2007, 02:06 PM
the grout shrank more than the thinset because it is unsanded. Unsanded grout shrinks - that's why you don't use unsanded on anything over 1/8", and even that is marginal. :shrug:

Of more concern to me would be the potential scratching of the glass tile. That's the biggest reason to use unsanded in this situation. Thinset tends to be pretty course - I would do another test and inspect the surface carefully when you are finished with the last wipe. If the thinset doesn't scratch and you like it, do what makes you happy.

02-28-2007, 05:32 PM
I'm happy with the thinset as grout. It still shrank a fair amount even though I mixed it fairly stiff. Man, this was hard! You should have told me I had to train at the gym before doing this stuff :D

Pic attached. Gonna go back to my "home" thread now for additional posts on this project.