Grout width determines if sanded or unsanded grout should be used. Standard grout widths larger than 1/16 will shrink if unsanded grout is used. Those are 1/8", and the sanded grout is perfectly appropriate for that type of tile and that joint size. A better quality grout, with a micro aggregate, like Mapei Ultracolor Plus FA (Fine Aggregate) should have been discussed on the front end. The $5 more per bag is totally worth paying for, but it isn't coming out of your installer's pocket. Nor is the extra time required to deal with the extra bit of cleanup effort. Having buyers remorse on the hind end is useless. You get what you got, because you didn't discuss options on the front end.
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shelf on wainscoting
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