My tile sheets are a mixture of linear slate and glass and I would like to know to grout when there's a combination. The concern is that the grout (unsanded) will stick to the natural stone and ruin its appearance. I have researched the problem and found a number of possibilities, however there is no clear winner.
Cool Earth Linear Slate Glass Tile
- Bulk apply sealer to all tiles before applying grout but risk is that it will discolour the glass.
- Apply sealer individually to only stone tiles before applying grout. Tedious!
- Mask natural stone with tape but risk having it come off during grouting. Risky.
- Coat all tiles with soapy water before grouting. Apparently this prevents grout from sticking to natural stone?
- Use a piping bag instead of a float in order to grout only the gaps between tiles.
- Bulk apply grout without sealing and try to get as much off the stone before it dries.
- Bulk apply grout without sealing and deal with consequences.
If my main concern is appearance, and I am willing to put in a reasonable amount of extra work (compared to grouting just 100% glass tiles), how should I proceed?