Siloxane WB Concentrate


Long-lasting, high-performance water repellent

Siloxane WB Concentrate mixes easily with fresh water on the job site to produce a penetrating water repellent ideal for application to dense or porous masonry surfaces. An effective alternative to conventional solvent-based silanes or siloxanes, Siloxane WB penetrates and chemically bonds deep within the masonry substrate to provide long-lasting protection against water-related staining or deterioration.

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Product Data Sheet

Safety Data Sheet

  • Penetrates deeply – effective on vertical or horizontal surfaces.
  • Ideal for field or in-plant treatment of precast concrete.
  • Mix with up to 19 parts fresh water.
  • One gallon concentrate treats up to 4,000 square feet. Consult coverage rates.
  • Resists water penetration when applied over existing shrinkage cracks of 0.02 inches or less.
  • SHELF LIFE: 1 year in tightly sealed, unopened container
  • VOC CONTENT: 16–41 g/L as diluted Low Solids Coating
  • FORM: Clear, amber liquid; vinegar-like odor
  • PH: Non-applicable
  • COVERAGE RATE: 50 - 200 sq ft/gal. See Product Data Sheet for variations per substrate.
  • FREEZE POINT: <–22° F (<–30° C)
  • FLASH POINT: 77° F (25° C) ASTM D 3278, 140° F (60° C) in 1:9 dilution, 145° F (62° C) in 1:14 dilution
  • TOTAL SOLIDS: 48% ASTM D 5095
  • WT/GAL: 7.9 lbs


Additional information

Weight N/A
Dimensions 1 × 1 × 1 in

1 Gallon, 5 Gallon