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Getting the proportions right when mixing resin and pebbles is vital for a strong, permeable patio finish. Here, we explain the typical resin-to-pebble ratio used for permeable outdoor kits and offer tips for best results.
Resin-to-Pebble Ratios Explained
The standard recommendation for systems such as Polirock is to use approximately 1kg of resin binder for every 6–8kg of aggregate. This ratio ensures the mixture holds together firmly while maintaining permeability, letting water drain through instead of pooling. The exact amount depends on the grain size of your chosen pebbles and the required thickness for your installation. Always follow the specific guidance provided with your kit, as adjustments may be needed for varying conditions or stone types.
Selecting and Mixing Materials
Choose pebbles that are pre-washed and dried, as these will bond better with the resin. For white stone finishes, opt for a non-yellowing polyurethane binder like Polirock to preserve bright colour. For resin-bound surfaces with other aggregates, low-yellowing epoxy is often suitable. Carefully measure your materials and mix thoroughly, ensuring each stone is coated for an even, durable surface.
When This Matters: Practical Tips
- Use standard ratios as a base, but adjust for thicker layers or larger stones.
- Work in manageable batches to maintain consistency across your patio.
- Read manufacturer instructions, especially when working in colder conditions or for specific stone types.
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Understanding the right resin-to-pebble ratio is key for a reliable and attractive permeable patio. If you’re sourcing materials or looking for kits designed for UK conditions, explore our main guide on where to buy permeable patio kits in the UK.