H&C Clear Liquid Hardener & Densifier

H&C® HYDRO-DEFEND® SL-40 Silane is a proprietary 40% Silane that penetrates into concrete or masonry and provides long term weatherproofing protection. H&C HYDRO-DEFEND SL-40 is a single component product that is ready to use and typically requires only one application.

Product Details

• Can be reopened to foot traffic within one hour
• Will not change the traction of skid resistant horizontal surfaces
• Prevents damage from ice and deicing salts and chloride ions

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