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When creating bright, resin-bound outdoor areas, maintaining the crisp appearance of light or white stones is a common concern. Non-yellowing polyurethane resin binders are specifically designed to address this need, helping preserve your surface’s true colour and clarity over time.
Why Choose Non-Yellowing Polyurethane?
Outdoor resin-bound surfaces, especially those featuring white or pale stones, are prone to yellowing due to UV exposure. Standard resins can develop a yellow tint, which can dull or change the appearance of the aggregate. Non-yellowing polyurethane binders—such as Polirock—are formulated to remain clear and stable when exposed to sunlight, making them the preferred option for light-coloured, decorative finishes.
How and When to Use Non-Yellowing Polyurethane
Non-yellowing polyurethane is most effective when used with white stones, bright marbles, or paler gravels in outdoor installations. It offers weather and UV resistance, helping surfaces look fresh for longer. For best results, ensure the stones are clean and dry before mixing with the binder. A typical application ratio is around 3% resin by weight of the stones. This binder also contributes to a tough, anti-slip, and permeable surface ideal for both foot traffic and light vehicles.
When This Matters
- Showpiece white or pale-coloured paths, driveways, and patios
- High-visibility areas requiring lasting visual appeal
- Projects where surface yellowing would detract from the overall design
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Choosing the right binder, like non-yellowing polyurethane, is key for anyone aiming to keep outdoor permeable aggregate installations looking their best. To explore more about selecting the perfect permeable aggregate for your project, see our main guide on how to choose the best permeable aggregate.