Update for 2018
As of 2018, we have found that the Super Seal 30, Super Seal 25, and the Masonry Saver Decorative Concrete Sealers are the most popular sealers for Exposed Aggregate surfaces. If you have any questions as to the best type of concrete sealer for your project, please ask below in our Q&A area. We are here to help!
Sealing Exposed Aggregate patios, driveways, and walkways will enhance and protect your surface from damaging weathering and deicing salts. Sealing aggregate stone is something any homeowner can do with great results.
Benefits of Sealing Exposed Aggregate
- Improves appearance
- Blocks U.V. rays that cause fading
- Reduces mold/mildew infiltration
- Increases longevity of surface
- Stabilizes the foundation
- Minimizes damages from water and freezing
Cleaning Exposed Aggregate
Prep the surface by pressure washing and dirt and grime. If needed, use a cleaner that is specific to any stains. For example: use a Rust Remover to remove rust or a Cleaner Degreaser to remove oil spills.
Always wear safety glasses to protect yourself. After cleaning, you need at least 2 days of dry weather before continuing.
Sealing Exposed Aggregate
Apply a Solvent Based Acrylic Sealer. These sealer types can be used on exposed aggregate with excellent results. Using a 1/2″ roller, start applying the sealer at the far end making sure to not step in the sealer. The sealer should be applied at the manufacturers spread rate. This is typically 100-150 sq. feet per gallon. Apply sealer quickly to avoid any overlaps. Let the sealer dry for 1-4 hours. If the sealer did not dry evenly, apply a second coat to even out the appearance.
Depending on your exposure to the weather and traffic, Exposed Aggregate should be sealed every 12-36 months.
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