Natural stone bears natures many complexities and shows large variations in its absorption,
density and hardness. These have an important impact on how to protect and preserve the appearance and beauty of the stone.Also, due to its absorbent nature, some varieties more so than others, will absorb liquids and oils, causing stains, discolorations or irreversible mineralogical chemical changes in the stone. These processes are greatly minimized by having the stone treated with a penetrating water or oil repellent.

These treatments products penetrate below the surface into the micro-pore structure, lining them and interrupting the natural migration of moisture or oil into the stone, making the stone surface easier to clean; and in exterior installations provides protections from the adverse affects of the natural weathering processes.

 Penetrating treatments will not protect acid sensitive stones (marble & limestone)   from etching, however, they can minimize its damaging affects by keeping the acid   at the surface producing superficial etches that are easier and less costly to remove.