Prosoco Natural Stone Treatment VOC

Natural Stone Treatment VOC protects masonry surfaces from dark staining and degradation caused by acid rain and organic matter such as fungal growth, mold and mildew. Unlike conventional siloxane water repellents, Natural Stone Treatment VOC is uniquely formulated for effectiveness on limestone, marble and other calcareous surfaces, as well as other masonry types.

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Product Type

Long-Lasting VOC-Compliant Water Repellent

Product Description

Natural Stone Treatment VOC is a VOC-compliant, long-lasting water repellent designed for masonry surfaces. It protects against staining, biological growth, and moisture degradation without altering the surface appearance. Ideal for limestone, marble, and other traditional masonry materials.

Key Benefits

  • Deep Penetration: Designed for long-term protection with small molecular size siloxanes.
  • Breathable: Allows water vapor to escape while blocking liquid water.
  • Non-Film Forming: Will not create a surface film or sheen.
  • Alkali-Resistant: Protects new or existing mortar and grout joints.
  • Reduces Soiling: Minimizes atmospheric soiling and discoloration.
  • Interior/Exterior Use: Suitable for a wide range of environments.
  • VOC-Compliant: Meets regulations in most states and districts.

Best For

  • Limestone
  • Marble
  • Traditional masonry
  • Interior masonry
  • Exterior masonry

Product Properties

Property Specification
Form Clear liquid
Specific Gravity 1.04
Wt/Gal 8.68 lbs
Active Content 11%
Total Solids 9% ASTM D 2369
VOC Content <120 g/L
Flash Point 61°F (16°C) ASTM D3278
Freeze Point 38°F (3°C)
Shelf Life 2 years in tightly sealed, unopened container