Sealing and Protecting Exposed Aggregate Finishes

Applying a transparent concrete sealer to an exposed aggregate surface can improve both its performance and appearance. These sealers—typically film-forming acrylic resins—can help protect against spalling, dusting, efflorescence, freeze-thaw damage, stains, deicing salts, and abrasion. A sealer will also enhance the color of the aggregate, accentuating its depth and richness.

When selecting an exposed aggregate sealer, look for a product that:

  • Is non-yellowing and UV resistant

  • Will provide a high-gloss wet look that deepens and enriches the color of the aggregate

  • Repels oil, grease, water, and stains

  • Is recoatable

Sealing Exposed Aggregate

Expo-Gloss from W.R. Meadows and Wet Look Lacquer from White Mountain are examples of sealers formulated specifically for use on exposed aggregate concrete. These products should be applied to clean surfaces that are free of contaminants. A brush, short-nap roller, or airless sprayer can be used.


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