Prosoco Natural Stone Treatment

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.

Product Description

Natural Stone Treatment is a modified siloxane water repellent developed for limestone, marble and most other traditional masonry surfaces. It penetrates deeply to provide long-lasting protection without altering the natural appearance of the substrate.

Key Benefits

  • Deep Penetration: Small molecular size ensures superior absorption into dense masonry.
  • Interior & Exterior Use: Suitable for both applications due to low odor formulation.
  • Non-Film Forming: Will not create a surface film or gloss.
  • Alkali Resistance: Protects new or existing mortar and grout joints.
  • Breathable: Allows vapor to escape without trapping moisture.

Best For

  • Limestone
  • Marble
  • Grout joints
  • Natural stone masonry
  • Interior and exterior walls

Product Properties

Property Specification
Form Clear, slightly yellow liquid; mild petroleum odor
VOC Content 713 g/L
Coverage Rate 50-300 sq ft/gal. See Product Data Sheet for variations per substrate.
Freeze Point <–22° F (<–30° C)
Flash Point 118° F (48° C) ASTM D 3278
Total Solids 9% ASTM D 2369
Shelf Life 2 years in tightly sealed, unopened container
Wt/Gal 6.70 lbs
Available Sizes 1-gal, 5-gal, 55-gal