How Do I Decide the Correct Resin-to-Stone Ratio?

← Back to Which resin bound paving product is best?

Getting the resin-to-stone ratio right is essential when installing resin bound paving, helping ensure a long-lasting, attractive surface. This guide outlines the best approach for different stone colours and offers tips for choosing the right products.

Understanding Resin-to-Stone Ratios

The general recommendation is to use around 3% resin binder by the weight of your chosen aggregate. For example, if you have 100kg of aggregate, you would add approximately 3kg of resin. This balance is crucial to bind the stones securely, promoting durability and a smooth finish across the surface.

Choosing the Right Binder for Stone Colour

The colour of your aggregate influences the best type of binder to use. For warm, creamy, or coloured stones, a clear epoxy binder such as “Trasparente” Epoxy Binder is recommended. This ensures clarity and preserves the vibrancy of coloured aggregates. For white stones, a polyurethane binder like “Polirock” is best, typically applied in a 1:1 ratio (equal parts binder to stone by weight) to maintain brightness and prevent yellowing over time.

Practical Tips for Application

• Accurate weighing: Always weigh both your stones and resin for each batch to maintain consistency.
• Mix thoroughly: Ensure that all aggregate is evenly coated with resin before laying.
• Environmental conditions: Apply mixtures in suitable weather—avoid high humidity or extreme temperatures for proper curing.
• Starter kits: If you are new to resin bound systems, a complete solution like the Flowstone permeable floor kit includes materials and guidance for accurate mixing.

When Does Resin Ratio Matter Most?

Careful attention to the resin-to-stone ratio is especially important for high-traffic areas or where aesthetic clarity is a priority, such as driveways, patios, and decorative paths. Using the correct proportion helps prevent issues like loose stones, uneven colour, or premature wear.

Related products

• "Trasparente" – Epoxy Binder for Coloured Pebbles and Grits
• "Polirock" – Polyurethane Binder for White Stones, 2kg Two-Component Kit
• "Flowstone" – Complete Permeable Floor Kit with Pebbles and Resin

Related guides

• Which Resin Bound Paving Product Is Best

Choosing the correct resin-to-stone ratio is foundational to successful resin bound paving. By following the right guidelines and selecting suitable products, you set the groundwork for a resilient and visually appealing surface. Learn more about selecting your ideal paving product on our main guide to which resin bound paving product is best.