Protectosil® 300 C

Clear, VOC-compliant reactive penetrating sealer with a migrating corrosion inhibitor. 100% active ingredients.

PRODUCT OVERVIEW:

A clear penetrating breathable VOC compliant surface treat- ment for use on concrete. The unique solvent-free silane treatment penetrates into the substrate and chemically bonds with silica to form a permanent attachment of the water re- pellent molecule. Creates a deep hydrophobic layer which prevents the ingress of water and water borne contaminants from entering the substrate and causing premature deteriora-tion.

APPLICATIONS:

For use on cast-in-place, pre-cast, and high strength concrete to protect the reinforcing steel from corrosion due to the ef- fect of water, deicing salts and carbonation. For protecting concrete structures such as parking and bridge decks, col- umns and beams, piers, sea walls, sidewalks, balconies, drive- ways, roads and other steel reinforced concrete structures. Inhibitor additive reduces active corrosion of steel reinforced
concrete. For treating heavy traffic wear locations or areas which receive high salt concentrations (piers, coastal build- ings) to provide a high performance, long lasting chloride screen.

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KEY FEATURES & BENIFIT

Excellent resistance to water intrusion

Excellent resistance to chloride ion ingress

Mitigation of AAR & ASR deterioration

Breathable system

Deep penetration into substrate

Keeps substrates cleaner

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.