If a salesman were to tell me not to use a snaded grout because it might ruin the material, my first reaction would be then what will normal use do?!?!? I've not only doneglass with Spectralock, but I've also done it with conventional sanded grout, as well, and I specify this because the sand in conventional grout isn't as fine as that found in Spectralock.

Now, that said, glass is very much like glazed ceramic in that not all glass has the same hardness. Unfortunately, to my knowledge, there isn't a rating scale like the PEI rating scale for glazed ceramic. But just to give you an idea, the glass in the pic below, as you can see, is a very glossy looking tile, and that IS sanded grout in the joints:

I have to say that I was told it would be ok to use sanded grout on my combo ceramic/glass tile floor. I made the glass tiles, but I cannot attest to any particular hardness. It's soda-lime glass, not Pyrex or something bullet proof.

It did scratch, I was disappointed, and subsequently used unsanded for my tub surround with the same glass tile. It was a pain only because the grout lines were theoretically too large to use unsanded, but with help from my tile store and elbow grease I think it will be ok.

As noted, the sand in the epoxy grout is probably finer than the other which seems to be the issue.

Bill I have to comment on your tile job, I have to tell ya I get a little excited when I see a space that is contemporary and so well done. (Weirdo) That is a beautiful tile job. I enjoy looking at good work, one of the reasons I have hesitated picking out small tiles is sometimes I see em and one is a bit crooked and that would catch my eye each and every time I walk past it. Some small tiles are not perfectly square either and I understand they are impossible to do perfectly maybe that is the plan, but that picture is beautiful. It looks like a nice space as well using more contemporary finishes am I right?
Chicamarie, did you say you made the glass tiles yourself?

Thanks to everyone for your replies. I am going to call the store today and ask a different person armed with the info from your answers. Fingers crossed!

Thanks so much!

It looks like a nice space as well using more contemporary finishes am I right?

Pretty much. It's a retail display space for a health spa at an upscale hotel that I helped tile last spring.

Here is a link that might be useful: Inn By the Sea

The glass tile in that bathroom is gorgeous.

I visited a salon recently that had a photo mosaic of a lotus flower and some other foliage that was done in glass tile, it was breath taking (pics here: http://www.susanjablonmosaics.com/glass-tile/beauty-salons-mosaic-tile.html ) Found out they had it made through susanjablonmosaics.com.

Started searching their site for inspiration and now I'm working with the staff there to come up with some custom blends for my kitchen and bathroom. Never realized there were so many choices in glass tile, it's been hard to make a decision. I'll post pics when it's done.

Thanks for the pics, very inspirational!
Cathy

Is it ok to use glass tiles (from Porcelanosa) as decorative tils on the bathroom floor? The porcelain tiles I purchased for the floor are very plain, so I thought it may look good to add glass tiles. My husband thought that the glass tiles will lose their shine overtime if we put them on the floor. HOwever, we don't wear shoes at home, so it should not be an issue. Right??

Thanks,

I used glass tiles as accents on my floor, and there's been no problem with them using their shine. That said, this is for an upstairs bathroom and we're a no-shoes-upstairs family.

It depends on the glass tiles. Some you can, some you can't. I would ask your sales person.