I have laid some new tiles in my hallway and they are a larger tile with what looks like a grout recess to make them look like 4 smaller tiles. My question is, are those lines meant to be grouted or should they me left ungrouted and just grout the main grout lines between the large tiles. The ‘built in’ grout lines are roughly 2mm wide but only 2mm deep. Is that enough to hold the grout in over time?
Many thanks in advance
Best Answer
2mm wide and 2mm deep will not hold grout. It won't even survive the tile grout sponge cleanup. When you do your grouting just for the main tiles, try to match the depth of the built in grout lines. Pictures are always nice on posts like this.