We just finished a remodel and had full granite backsplash installed. Like you we also had granite window sills and a larger piece of granite behind the range. They used a clear silicone where the backsplash and counter meet. I am not sure what you mean by "grouted" unles quartz is done differently than granite. Where I have seams they seem to be butted together and are not noticable. We love the full granite backsplash!!! Feel it was the best move we made in our remodel.

By grouted I am referring to the material they use to seam counters. I thought they would seam the backsplash the same way with the same material.

That epoxy seam stuff? I would expect that and not just clear caulk on seams whether they're on the wall or the counter.

I had to have a step on mine due to an oops in planning and the step, while not a seam exactly, had the seam treatment. It was caulked where it met the walls and cabinets, but epoxied or whatever in the seam area. See the little bumpout? It's a separate piece but seamed so as to look like it's not (It could fool someone who'd never been to a stoneyard and didn't know you can't do that with a single piece!). Only photo I have but the lighting highlights the stacked thing going on:

Get a redo if it bugs you and you can!

Hi - We also have clear silicon between our slap backsplash and counters just like you described - it is not the grout used for the counters. I think there has to be a functional reason - maybe it is more water resistant? We could conceivably remove & redo the silicon easily if we needed to but could not do that as easily if it was grouted? Clearly, I have no idea... just random thoughts.:) Enjoy your new space!!

I just looked when I got home and yes I do have a different epoxy where seam is on countertop and have a clear silicone where backsplash and counter meet. As for the seams on the backsplash I understand your point but mine are butted together so tightly the seam is not noticable. I

The reason for silicone rather than epoxy where the backsplash and counter meet is because they are on two different surfaces and there might be some movement which could crack a hard compound like epoxy. Silicone is used to allow for tiny movement without cracking.

The seam in our counter top is epoxied. The seam between the counter and the backsplash is silicone. Silicone was also used for the vertical seam where two pieces of backsplash meet at a corner, where the backsplash meets the granite window sill, window sill to counter, granite to refrigerator enclosure side panel and for the granite trim around the edge of our rangetop.

The seams are small and not glaring.

were you able to get your counter top and back splash the same thickness? I am in the middle of my remodel and considering use the same for counter and back splash however, told the quartzite is too thick for back splash. How did you get around that?

thank you

@wattynw do you know the thickness of your quartzite? We just had 2cm quartzite counters installed and used the slabs for full height (18") backsplash, and there was no concern raised about the thickness of the stone (we used a very reputable installer; if there had been a question, it would have been discussed). I think you should ask for some clarification on the supposed issue with your chosen quartzite.

3cm, i don't think they can make it thinner? My back splash is open ended on two sides, so the thickness would be very visible.

thank you for the picture