PROSOCO Natural Stone Treatment – Penetrating Water Repellent for Limestone & Marble (5 Gal)/lon

WATER REPELLENT FOR CALCAREOUS STONE

PROSOCO Natural Stone Treatment is a modified siloxane water repellent specifically formulated for limestone, marble, and other calcareous masonry surfaces. It penetrates deeply to provide long-lasting protection against water intrusion while preserving the natural appearance of the substrate.

Unlike conventional water repellents, this formulation is optimized for sensitive stone types, offering superior protection without forming a surface film. It helps reduce staining, deterioration, and biological growth such as mold and mildew, making it ideal for both interior and exterior applications.

FEATURES / BENEFITS

• Designed for limestone, marble, and other calcareous surfaces
  
• Deep-penetrating protection with no surface film or gloss
  
• Maintains natural appearance of stone
  
• Allows surfaces to breathe—does not trap moisture
  
• Helps reduce staining, mold, mildew, and biological growth
  
• Alkali-resistant—protects mortar and grout joints
  
• Low odor and suitable for interior and exterior use

TECHNICAL DATA

• Form: Clear, slightly yellow liquid; mild petroleum odor
  
• VOC Content: 713 g/L
  
• pH: Not applicable
  
• Coverage Rate: 50–300 sq. ft. per gallon
  
• Shelf Life: 2 years (unopened)
  
• Freeze Point: < –22°F (–30°C)
  
• Flash Point: 118°F (48°C)
  
• Total Solids: 9%
  
• Weight per Gallon: 6.70 lbs

AVAILABLE SIZES

• 5 Gallon

RESOURCES

• Product Data Sheet
• Safety Data Sheet
• Safety Data Sheet (Spanish)
• SDS Canadian French
• VOC Compliance