Protectosil® CHEM-TRETE® PB 100

Clear, 100% silane water repellent with catalyst designed for porous substrates.

PRODUCT OVERVIEW:

Protectosil® CHEM-TRETE® PB 100 is a clear, penetrating, breathable water repellent for use on exterior above-grade concrete masonry units, brick masonry and most natural stones. This product provides resistance against water, alkali attack, acid rain and waterborne staining by penetrating into the substrate and chemically bonding with siliceous materials to form a permanent attachment of the water repellent molecule. Protectosil® CHEM-TRETE® PB 100 is especially suited for making porous substrates, such as split-face block, water repellent. This water repellent effect protects the substrate from wind-driven rain.

APPLICATIONS:

Protects materials such as concrete masonry units (split-face, fluted, or ground-faced blocks) from the ingress of wind-driven rain. Prevents moisture from entering and damaging interior walls and treated brick masonry, especially single-wythe wall construction. Keeps masonry cleaner by reducing the amount of dirt and other pollutants that may be absorbed into the substrate.

 

 

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KEY FEATURES & BENIFIT

High resistance to wind-driven rain

Excellent resistance to chloride ion ingress

Reduced efflorescence

Breathable system

Deep penetration into substrate

Substrates already treated with Protectosil® CHEM-TRETE® PB 100 can be painted over

Evonik is one of the world’s leading specialty chemicals companies. Protectosil® represents our commitment to innovation, quality, and long-term surface protection across industries.

© 2025 Evonik Industries AG. All rights reserved. Protectosil® is a registered trademark of Evonik Operations GmbH.