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Choosing the right aggregate is key to achieving a successful, long-lasting permeable floor for courtyards. The size, colour, and type of your stone can all impact water drainage, visual appeal, and maintenance requirements.
Types of Aggregates to Consider
For resin-bound permeable surfaces, pre-washed pebbles and natural gravel are widely used. Their rounded shape promotes water flow while offering a stable base. Aggregates come in various colours, from natural tones to marble and granite blends, giving you flexibility to match your outdoor space.
Products like the Washed Pebbles for Permeable Floors provide excellent drainage and eco-friendly sourcing, and they’re ready to be combined with a suitable resin binder.
Matching Aggregate with Resin Binders
The choice of binder is crucial for colour preservation and surface durability. If opting for white or very light stones, select a polyurethane binder designed to prevent yellowing, such as “Polirock”. For other coloured aggregates, a low-yellowing epoxy is appropriate. Always use washed, dry aggregates to ensure optimal resin bonding and a uniform finish.
- For white stones: opt for clear, non-yellowing polyurethane binder.
- For coloured stones: use low-yellowing epoxy binders.
When Aggregate Selection Matters Most
Careful aggregate selection is especially important in high-traffic courtyards, rain-prone areas, and public or shared spaces where safety, aesthetics, and performance all matter. The right combination of aggregate and binder reduces slip risk and helps your surface withstand the UK climate.
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Ultimately, choosing the right aggregate and compatible binder ensures your permeable courtyard kit delivers both style and function. To explore turnkey solutions and materials, see our full range of permeable floor kits and supplies on our main guide.