To lay your travertine tiles, you will need tile adhesive, a notched trowel, tile spacers, and a stone-colored grout (or another color). Begin by applying the tile adhesive to the surface, taking care to remove any excess afterward. Apply adhesive to your travertine tile to ensure better adhesion. For the opus pattern, position your travertine tiles according to the initial laying plan. As you lay the tiles, we recommend placing spacers between each tile to facilitate grout application. Please note that we also offer the adhesive. To allow for cuts or other unforeseen circumstances, Ligerio advises you to purchase 10% more than the initial quantity you planned