Protectosil AQUA-TRETE EM

A penetrating, waterborne, vapor-permeable water repellent for use on concrete, brick, concrete masonry units, and some natural stones. A ready-to-use, low-VOC, silane/siloxane emulsion.

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Product Type

Waterborne Silane/Siloxane Concrete and Masonry Repellent

Protectosil AQUA-TRETE EM

Protectosil AQUA-TRETE EM is a penetrating, waterborne, vapor-permeable silane/siloxane emulsion designed to protect concrete, brick, concrete masonry units, and natural stone. As a ready-to-use, low-VOC solution, it chemically bonds to siliceous materials in the substrate, forming a permanent water-repellent barrier. This prevents the ingress of water and contaminants, reducing deterioration from efflorescence, scaling, corrosion of reinforcing steel, mildew, and other damage caused by moisture and environmental exposure. Unlike solvent-based alternatives, Protectosil AQUA-TRETE EM maintains full moisture vapor transmission, preventing issues like sealer blushing or freeze–thaw damage, making it ideal for sensitive projects and VOC-restricted regions.

Key Benefits of Protectosil AQUA-TRETE EM

  • Non-flammable, low-VOC formulation compliant in all 50 U.S. states
  • High resistance to wind-driven rain and waterborne contaminants
  • Reduces efflorescence and leaching for cleaner surfaces
  • Breathable system allows moisture vapor transmission
  • Good penetration into various masonry and concrete substrates
  • High resistance to alkali attack
  • Long service life with minimal maintenance
  • Ready-to-use — no blending or additives required

Common Applications

Protectosil AQUA-TRETE EM is recommended for:

  • Concrete exposed to deicing salts and waterborne chemicals
  • Brick, stucco, and sandstone façades
  • Hand-molded bricks and natural stone surfaces
  • Brick masonry, including single-wythe wall construction
  • Concrete masonry units (split-face, fluted, ground-faced blocks)
  • Projects in VOC-regulated areas such as California’s SCAQMD region

Packaging

Available in 5-gallon pails and 55-gallon drums. Shipped F.O.B. throughout the United States and Canada. For best results, store sealed and away from direct sunlight and moisture.

Product Properties

Property Value
Form Waterborne silane/siloxane emulsion
Function Concrete and masonry water repellent
VOC Content Low-VOC, compliant in all 50 U.S. states
Performance Vapor-permeable, high resistance to water intrusion
Special Features Non-flammable, ready-to-use
Packaging 5-gallon pails, 55-gallon drums

For additional masonry protection products, see our Protectosil CHEM TRETE PB VOC. Learn more about Evonik’s full Protectosil line at www.silanes.evonik.com.