Water-oil repellent sealer. PROSEAL is suitable for the superficial protection of granite for both indoor and outdoor. We recommend PROSEAL on quarzitic stones and materials with different percentage of silicate and carbonate. It works very well on polished, honed, sandblast, and flamed surfaces. PROSEAL operates in the micro-porosities of materials giving protection against stain. PROSEAL does not create superficial films, and let the material transpires. After the application a light increase of color can be gained depending on the type of stone the product is applied to. Good resistance to outside conditions.