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Choosing the right resin binder is crucial for outdoor permeable floors, especially if you want your surface to keep its original look. Low-yellowing epoxy helps protect the colour integrity of your resin-bound surfaces over time, even when exposed to sunlight and changing weather conditions.
What is Low-Yellowing Epoxy?
Low-yellowing epoxy refers to an epoxy resin formulation designed to minimise visible colour change when exposed to UV light and outdoor conditions. While all standard epoxies can experience yellowing over time, those labelled as low-yellowing are engineered to slow this process, preserving the vibrancy of coloured stone aggregates in permeable flooring.
When Should You Choose Low-Yellowing Epoxy?
Low-yellowing epoxy is best suited for surfaces using coloured pebbles or stones, where maintaining the original appearance is important. It is generally not recommended for white or very light stones such as Carrara gravel; for these, a non-yellowing polyurethane binder offers superior resistance to discolouration. Guidance on selecting the appropriate resin is often included with comprehensive kits such as the Flowstone permeable floor kit.
Using and Applying Low-Yellowing Epoxy
Application of low-yellowing epoxy is straightforward but requires attention to surface preparation and resin dosage to ensure lasting results. Typically, clean, pre-washed pebbles are mixed with the epoxy, then spread and levelled to create a durable, permeable finish. Always follow detailed instructions regarding mixing and weather conditions for best results.
When This Matters
- If your outdoor area is exposed to continual sunlight or you are working with brightly coloured stone, choosing low-yellowing epoxy can help your installation remain attractive for longer.
- For projects prioritising a white or ultra-light aesthetic, opt for non-yellowing polyurethane instead.
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Selecting the right resin binder is a key step in ensuring your permeable flooring remains both functional and visually appealing for years to come. For more long-term guidance and tips on resin-bound surfaces, see our hub on Does Permeable Flooring Last Over Time?.