Laurie, Thanks again for sharing your beautiful kitchen floor. I love those tiles for my own kitchen floor when I am ready to do my kitchen. The colors in the tile are so nice and neutral with variations. I love the thin grout line. I spoke with the tile guy tonight and he apologized and told me he will be here tomorrow night (I'll let you know if he shows up... he was highly recommended by my client but I feel he is putting me last by not coming here in the day time to get started and done with the project.... sure wish I had a handy loving husband like you and Weedacres have) to start the project and we even talked about grout joints and he told me he is going to aim for 1/8th instead of the 3/8th if that would make me happy. I also love both Weedyacres' kitchen and kitchen floor and Hilltop's kitchen and backsplash. Both grout colors looked so nice that I started to think I was worrying too much since both work so well with the tile. What color grout did you use? I have to look up on another post to find out the name of your tile as well as the size since I think that your tile may look nice in my kitchen. I know for my foyer areas, I am happy with the Rialto Beige choice that seemed to work in those areas and I needed the smaller 12 X 12 size since those two areas are small.

The width of the tile joint determines the grout type. Sanded grout holds better in joints, and unsanded is only used as a last resort as it has no body and will shrink and pull away when used in too large joints. Better still is the new grouts with the microfine aggregates that can go into the small joints or large. It isn’t your $8 a bag cheap box store crapola though. If you want to view your job from the viewpoint of industry standards, start here. This is the industry bible, with all of the standards laid out in black and white with diagrams. https://www.tcnatile.com/products-and-services/publications/218-english-publications/188-handbook/957-2018-tcna-handbook-for-ceramic-glass-and-stone-tile-installation.html But. You should have hired an installer who owns a copy and knows all of that. Did you follow these steps when hiring? https://www.ceramictilefoundation.org/homeowners-guide-to-hiring-qualified-tile-installer

This is a seminar and I won't go into that kind of breadth or depth on this subject. Basically, four things to consider regarding sealant: 1) use of the space - high traffic?; 2) color of grout; 3) type of grout; 4) type of sealer. Most sealers are not impenetrable and do breathe. Their purpose is to aid in the cleaning, not to make cleaning unnecessary. I would not rely on HGTV (both of your sources were actually quoting some HGTV guy) and a carpet cleaning company for information on this. If you get a room full of real professionals together who have been doing this work for decades, I'm doubtful you will find agreement with your referred sources conclusions. Seal on but rely on manufacturer recommendations and those of your qualified tile professional to determine the best sealer (and grout) for your application. Now, from afar and in general terms, your question about a non-sanded grout sealer. Have you already grouted it? If you haven't, then Laticrete Select non-sanded grout does not require sealant. If you have already grouted it, then we might recommend Miracle Porous Plus (use it in well ventilated area as it is petroleum based). Van Herron Stain Guard is fine too (do a couple coats if you use that). Our opinion but we base these decisions on all the things mentioned above on our own projects. I just realized that you changed your post and my response is based on the previous post you had up.

I've used burlap as a last wipe after grout has fully set. Either a burlap sack or we had some left over from a craft project wife got at craft store.