Prosoco Interior Masonry Dustproofer

Ready-to-use, environmentally safe waterborne silicone emulsion for use on brick, mortar, natural stone, and other porous masonry. Weather Seal Interior Masonry Dustproofer prevents further dusting to recently exposed older interior masonry and provides water resistance to the applied surface. Interior Masonry Dustproofer dries to a clear, matte finish and retains the substrate’s natural breathability properties.

Product Description

Interior Masonry Dustproofer is a ready-to-use, environmentally safe, waterborne silicone emulsion for use on brick, mortar, natural stone and other porous masonry. It seals in dust, prevents further dusting, dries clear, and retains the substrate’s natural breathability.

Key Benefits

  • Dustproofing: Prevents further dusting of interior masonry.
  • Clear Finish: Dries to a completely clear, matte finish without yellowing.
  • VOC Compliant: Complies with all national, state and district regulations.
  • Odor Control: Low odor for safe indoor use.
  • Moisture Resistance: Controls efflorescence, mildew and moisture-related stains.
  • Breathability: Allows vapor transmission without trapping moisture.

Best For

  • Interior masonry walls
  • Mortar and grout lines
  • Natural stone
  • Brick and stucco
  • Other porous masonry surfaces

Product Properties

Property Specification
Form White liquid
VOC Content <100 g/L
Coverage Rate 50–1500 sq ft/gal (varies by substrate)
Freeze Point 32° F (0° C)
Flash Point >212° F (>100° C) ASTM D3278
Total Solids 4.1% ASTM D2369
Wt/Gal 8.3 lbs
Shelf Life 1 year in tightly sealed, unopened container
Available Sizes 1-gal, 5-gal