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When selecting a resin-bound surface for your courtyard or outdoor space, understanding low-yellowing epoxy can help you maintain a vibrant, long-lasting finish, especially when installing permeable flooring with coloured aggregates.
What Is Low-Yellowing Epoxy?
Low-yellowing epoxy is a specially formulated binder used in resin-bound surfaces to help maintain colour integrity over time. All standard epoxies may develop a mild yellow tint with prolonged sunlight exposure, but low-yellowing variants help preserve the original tones, particularly on coloured stones, by slowing the discolouration process. While they don’t completely prevent yellowing, their formulation is designed for better resistance than basic epoxy resins.
Choosing the Right Binder for Your Project
For resin-bound flooring using coloured pebbles or aggregates, low-yellowing epoxy is the practical choice to retain the richness of decorative finishes. On the other hand, for light or white stones—such as Carrara marble—you may want to opt for a dedicated non-yellowing polyurethane binder instead, as these offer even greater clarity. Flowstone – Complete Permeable Floor Kit provides both binder types, and includes step-by-step guidance to ensure your outdoor surface matches your design and durability goals.
When Does Low-Yellowing Epoxy Matter?
- If your design features coloured aggregates and you want them to remain true-to-colour with time.
- When your courtyard receives plenty of sunlight throughout the year.
- If a value-focused solution is important, as low-yellowing epoxy offers a good balance between performance and cost.
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Choosing the right resin binder is essential for attractive, durable permeable flooring in courtyards. For an in-depth overview of your options, see our main guide: Which courtyard permeable flooring should I choose?