Polymeric Sand Polymeric Sand is swept into the joints of Travertine Pavers after installation.The thickness can be 0.5 inch thick or 3/8 of an inch. Travertine Tile Travertine Tile is ideal for indoors or covered outdoor areas with an existing concrete surface.Travertine Pool Coping / Stair Treads Travertine pool coping is ideal for the edges of a pool and as stair treads.Travertine Pavers Travertine pavers are ideal for pool decks, patios, driveways and walkways.