Prosoco Concrete Silane WB 20

This ready-to-use, high-grade silane water repellent provides resistance against the damaging effects of freeze-thaw cycles, acid rain and salt formation. Unlike conventional coatings and sealers, Concrete Silane WB 20 penetrates completely and reacts to form a chemical bond within the substrate. A water repellent barrier is formed without a surface film or gloss. Treatment with Concrete Silane WB 20 will not entrap damaging moisture within the concrete or masonry surface. In addition, treated surfaces retain their natural color, texture, and appearance.

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Product Type

Water-based 20% Silane Emulsion for Concrete

Product Description

Concrete Silane WB 20 is a breathable, water-based 20% active silane emulsion designed to protect concrete surfaces from water and chloride intrusion. It penetrates deeply into the substrate, forming a long-lasting barrier that reduces corrosion, spalling, and freeze-thaw damage without altering surface appearance.

Key Benefits

  • Water Repellent: Deep-penetrating protection for vertical and horizontal concrete.
  • Breathable: Allows water vapor to escape, preventing moisture entrapment.
  • VOC Compliant: Meets most regional regulations with 350 g/L VOC content.
  • Non-film forming: Maintains natural concrete look while reducing maintenance costs.

Best For

  • Precast concrete panels
  • Parking decks
  • Bridge structures
  • Cast-in-place concrete
  • Traffic-bearing concrete exposed to deicing salts

Product Properties

Property Specification
Form Milky white emulsion
Specific Gravity 0.96 – 1.02
pH 9.0 – 10.0
Coverage Rate Concrete: 100–175 sq.ft. (9–16 sq.m.)
Active Content 20%
VOC Content 350 g/L maximum
Flash Point >158° F (>70° C)
Freeze Point 32° F (0° C)
Wt/Gal 8.0 – 8.5 lbs
Water Vapor Transmission 100% retention ASTM D6490
Shelf Life 1 year in tightly sealed, unopened container
Available Sizes 5 gallon, 55 gallon