What sealing does for exposed aggregate
Freshly placed exposed aggregate shows off the colours of the stone. As the surface weathers, a dusty film builds up, the stones lose their richness and the paste around them is left open to water, salt and staining.
A clear acrylic sealer brings the stone colour back to life and leaves a hard coating over the surface. That coating helps limit water absorption and makes everyday dirt, leaves and spills easier to clean away.
Signs your aggregate needs attention
- Stones look grey, dusty or flat instead of colourful
- Water soaks in quickly after rain
- You’re seeing more loose stones along edges and in traffic areas
- Salt and oil marks are building up on the driveway
- The previous sealer has worn through in patches
Our process
We assess the concrete and any existing sealer, then clean the surface thoroughly so the sealer bonds to the stone rather than the dirt. A high-solids, non-yellowing acrylic sealer is applied evenly, including borders, steps and edges.
For exposed aggregate, many homeowners choose a gloss finish to make the stone colours pop. If you prefer a more natural look, a lower sheen still gives you protection without as much shine.
Exposed aggregate in Ontario winters
Driveways and walkways take the brunt of winter: salt, slush, shovels and repeated freezing and thawing. Keeping the surface sealed reduces how much water gets in, which reduces the risk of surface flaking and stones loosening over time.
