Travertine tile is available as individual tile pieces or attached to a mesh background if the tiles are very small. The mesh provides additional support as well as speeds up the installation process. Split face travertine has a rustic look with a chiselled appearance rather than the traditional smooth surface of many tiles. Grouting split face mesh travertine is very similar to grouting other mesh tiles, but you must first seal the travertine surface to prevent staining the grout.
Open a can of grout release agent and pour it into a paint tray. Insert a small, trim size paint roller into the release agent then roll it off as much as possible. Apply the release agent to the top of each travertine tile but do not let it drip down in between them. If the release agent drips down between the tiles, it interferes with grout adhesion.
Allow the grout release agent to dry for 25 minutes. Then open a tub of premixed, sanded grout, which is typically used with travertine tile.
Insert a grout float into the tub and scoop up 1/2-cup of grout. Angle the float at 45 degrees to the tile and push the grout down into the crevices between the tiles. Add additional grout to the float and continue the process until all of the travertine grout is covered.
Fill a bucket with water and insert a clean, non-abrasive sponge into it. Squeeze out as much water as possible from the sponge. Wipe the surface of the tiles with the sponge in a circular motion. Rinse the sponge frequently and change the water in the bucket when it clouds up.
Allow the grouted travertine tile to dry for 24 hours before walking on it or setting any objects on it.