Travertine and natural stone cleaning starts with correctly identifying the stone type — travertine, marble, coral stone, and limestone each have different porosity and sensitivity levels, and using the wrong pressure or chemical can permanently etch or discolor the surface. The process uses lower-pressure equipment paired with pH-balanced, stone-safe cleaning solutions to lift dirt and mineral buildup without damaging the stone's natural finish, followed by a thorough rinse to clear all residue from the porous surface. Full drying time is especially critical with natural stone before any sealant is applied, since trapped moisture beneath a seal can cause discoloration or efflorescence — a white, chalky mineral deposit that rises to the surface. Because natural stone carries more risk than standard concrete or pavers, this is a job where experience with the specific stone type makes the difference between a clean, protected surface and one that's permanently damaged.