Let dry for 24 hours. Before doing anything else with your newly marble tiles surface, you need to let the thin-set dry for a full 24 hours at minimum. Note, however, that you can gently clean off any wet mortar from the surface of your floor tiles with a wet rag before 24 hours pass. Doing so is even advised, since dry mortar is more difficult to clean off.

When dry, gently tap each tile with a wooden mallet to make sure that it is secured properly. As before, loose tiles can be found by listening for a hollow sound. There should not be any loose tiles at this point, but if there are, remove the problem casstle tiles and reapply thin-set to the back of the tiles. Place the tile back in its correct position in your floor and let the mortar dry for another 24 hours.

Grout in between the cement tiles. Mix the grout according to the manufacturer’s instructions and swipe it over the joints in between your tiles, sealing them together. Force the grout in between individual tiles design using a trowel.

Use a sanded grout if you are tiling over a floor and a non-sanded grout if you are tiling over a wall. Let the grout cure for about three days. After the grout has cured, consider coating it with a silicone grout sealer to protect it.

Clean the surface again. Use detergent and warm water to scrub any “grout haze” from the surface of your new wood marble tiles once the grout has cured. This extra step will improve the overall appearance of your newly re-tiled space. This step should also complete the process.