Protectosil AQUA-TRETE 40

A clear, penetrating, waterborne, breathable water repellent for use on concrete. A ready-to-use, low-VOC silane emulsion. Reduces the ingress of water and waterborne contaminants that cause premature deterioration of the substrate. Penetrates the substrate and chemically bonds with silica to form a permanent attachment of the water repellent molecule. Protectosil® AQUA-TRETE® 40 water repellent is especially suited for application when solvent-borne products are not acceptable, as in states that have VOC regulations for AIM coatings. Protectosil® AQUA-TRETE® 40 meets most national and state VOC regulations.

Protectosil AQUA-TRETE 40

Protectosil AQUA-TRETE 40 is a clear, breathable, penetrating silane water repellent engineered for long-lasting concrete protection. This ready-to-use, low-VOC silane emulsion chemically bonds with silica within the substrate, creating a permanent hydrophobic layer that repels water and waterborne contaminants. By preventing ingress, it helps avoid damage from efflorescence, leaching, scaling, dirt buildup, corrosion of reinforcing steel, and freeze–thaw cycles. Designed to meet both national and state VOC regulations, it is particularly suitable for projects where solvent-borne products are restricted.

Key Benefits of Protectosil AQUA-TRETE 40

  • Non-flammable, low-VOC silane emulsion
  • Excellent chloride ion ingress resistance
  • Reduced efflorescence and surface staining
  • Breathable system allowing natural moisture vapor transmission
  • Deep penetration without altering surface appearance
  • High resistance to alkali attack
  • Long service life with minimal maintenance
  • Dry time of approximately 4 hours at 70°F
  • Helps maintain cleaner substrates over time

Common Applications

Ideal for protecting concrete, including GFRC, from acid rain, deicer scaling, and freeze–thaw damage. Reduces absorption of dirt and pollutants, prevents reinforcing steel corrosion, and resists alkalis, UV light, and waterborne chemicals. Suitable for infrastructure such as bridges, parking decks, marine structures, and architectural concrete where durability and aesthetics are essential.

Packaging & Storage

Available in 5-gallon pails and 55-gallon drums. Shipped F.O.B. throughout the United States and Canada. Store in original, sealed containers in cool, dry conditions. Avoid freezing.

Product Properties

Property Value
Formulation Silane in proprietary emulsion system
Function Concrete water repellent
VOC Compliance Meets AIM regulations
Performance Resists alkalis, chloride ingress, and waterborne contaminants
Dry Time 4 hours at 70°F
Packaging 5-gallon pails, 55-gallon drums

For a water-based silane repellent with higher solids content, see Protectosil AQUA-TRETE 340. Learn more about Evonik Protectosil solutions at www.silanes.evonik.com.