SpecChem > Products > Water Repellents > SpecSilane 20 WB

SpecSilane 20 WB

20% solids water-based penetrating silane sealer

SpecSilane 20 WB is a 20% solids, waterborne silane sealer. This clear, penetrating, breathable water repellent is designed for use on interior and exterior, above-grade concrete or masonry surfaces. It penetrates the surface and bonds directly with the substrate, providing excellent resistance to moisture and salt.

  • Provides excellent chloride screening.
  • Enhances water repellency while maintaining breathability.
  • VOC compliant with a low environmental impact, actual VOC = 20 g/l.
  • Reduces the effects of freeze-thaw cycling and weathering on concrete structures.
  • Offers long-lasting protection for new and existing concrete surfaces.
  • Dries tack-free and skid-resistant, preserving the natural appearance of the substrate without yellowing.
Tech Sheet
Safety Sheet

Application

SpecSilane 20 WB is used to protect concrete and masonry surfaces such as decks, pavements, parking structures, ramps, bridges, and marine platforms against corrosive effects from de-icing salts, moisture, and weathering to prevent spalling and deterioration.

New Concrete

  • Surfaces should be well cured (minimum 28 days) and free from any curing residue, dust, debris, oil, and other contaminants. Ensure surfaces are absorptive to allow penetration of the sealer.

Old Concrete and Masonry

  • Remove any previously applied sealers and contaminants with pressure washing and SpecChem Citrus Cleaner. Ensure the substrate is absorptive for effective penetration.

Packaging

  • Available in 55-gallon drums and 5-gallon pails.

Shelf Life

  • Store in sealed containers in a clean, dry area between 45-85°F. Keep from freezing. Shelf life is one year in unopened containers.

Coverage

  • Coverage Rate: Depends on surface porosity:
    • Porous surfaces: 100-125 ft²/gal
    • Broom finish: 100-150 ft²/gal
    • Smooth concrete: 150-200 ft²/gal

Test Data

  • Color: Clear
  • Odor: None
  • Weight: 8.8 lbs per gallon
  • Composition: Alkylalkoxysilane in water
  • Active Content: 20% by weight Alkylalkoxysilane
  • Flash Point: Greater than 200°F
  • VOC Content: Less than 250 grams/liter