How to Mix Aggregates and Resin for Bound Gravel Parking Areas

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How to Mix Aggregates and Resin for Resin Bound Gravel Parking Areas

Mixing aggregates and resin correctly is essential for building a robust, attractive, and permeable resin bound gravel parking area. The right blend ensures lasting stability and resists wear from vehicles and weather.

Choosing Your Binder and Aggregate

Begin with clean, dry aggregates, such as washed pebbles or coloured grits. Select a binder suitable for your chosen stone type and outdoor exposure. For classic white aggregates, opt for a non-yellowing polyurethane binder such as Polirock. For dark or coloured stones, a clear epoxy resin like Trasparente provides a decorative, UV-stable finish. Mixing the correct aggregate size—typically between 4 and 8 mm—ensures both strength and permeability.

Mixing Ratios and Process

For a stable bond, thoroughly mix resin and aggregates before application. A general guideline is to use around 3% binder by weight for your aggregates—so 1 kg of resin to about 30–33 kg of stone (always check product instructions for your specific binder and aggregate type). Place aggregates in a large, clean mixing vessel or use a cement mixer for larger areas. Add the resin and blend until stones are completely coated, ensuring even coverage and bonding. Once mixed, promptly spread and compact the mixture to avoid premature curing.

When Binder Choice Matters

Binder selection impacts both appearance and longevity. Polyurethane binders are recommended for white or light stones to maintain clarity and prevent yellowing, while epoxy resins work well with darker or coloured aggregates. Following the manufacturer’s guidance on ratios and type ensures your finished surface performs well under heavy use and changing seasons.

Related guides

How Do You Build A Resin Bound Gravel Parking Area

Correctly blending aggregates and resin is a fundamental step towards a durable resin bound gravel parking area. For a convenient solution, explore a kit like the Flowstone Complete Permeable Floor Kit—ideal for streamlining installation and ensuring optimal results. Learn more about building your resin bound parking area on our main guide.