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All Categories > Water Repellants / Graffiti Protection > Water Repellants > Prosoco > Natural Stone Treatment  
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Natural Stone Treatment

Sure Klean® Weather Seal Natural Stone Treatment is a modified siloxane water repellent developed for limestone, marble and most other traditional masonry surfaces. Natural Stone Treatment penetrates deeply to provide long-lasting protection without altering the natural appearance of the substrate.  Unlike conventional siloxane water repellents, Natural Stone Treatment is modified for effectiveness on most limestone, marble and other calcareous surfaces. This product provides water repellent protection superior to more common silane, siloxane, acrylic or metallic stearate water repellents.  Natural Stone Treatment reduces the severity of biological staining common to regions with high relative humidity. Treated surfaces resist dark staining and degradation caused by fungal growth, mold and mildew.

•Treated surfaces "breathe" – does not trap moisture.
•Small molecular size allows deep penetration.
•Suitable for interior and exterior surfaces.
•Will not form a surface film or gloss.
•Alkali resistant – protects new or existing mortar and grout joints.
•Reduces atmospheric soiling.
•Resists damage from saltwater pools.
•Low odor.

Item #

Product Name


Unit Quantity


SKNATSTONE.1G Natural Stone Treatment 1 gallon pail Per Gallon In 1 Gallon Pails 10 lbs. Per Pail
SKNATSTONE.5G Natural Stone Treatment 5 gallon pail Per Gallon In 5 Gallon Pails 55 lbs. Per Pail


Prosoco Natural Stone Treatment Data Sheet

Prosoco Natural Stone Treatment MSDS