Gravel (Aggregates) for Permeable Flooring: Your Essential Guide

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Gravel (or aggregates) play a vital role in the construction of permeable flooring, providing both an attractive appearance and essential water drainage. Choosing the right product, quantity, and binder makes all the difference for a long-lasting, high-performance result.

Why Aggregates Matter in Permeable Flooring

Aggregates form the backbone of any permeable resin-bound surface, allowing rainwater to flow through the pavement and helping prevent surface flooding. Using washed and dried pebbles ensures optimal drainage and a strong bond with your chosen resin binder, resulting in a durable, low-maintenance solution. Customising your surface finish is also possible by combining sizes and colours of aggregate.

Calculating Quantity: How Much Gravel Do You Need?

As a practical guide, plan for one 25 kg bag of washed pebbles per square metre when laying a standard permeable resin floor. This ensures full coverage and uniform thickness for footpaths and patios. For driveways and heavier-use areas, check your specific system’s recommended thickness and adjust quantities accordingly.

Choosing the Right Products and Application Tips

Pairing your aggregate with a compatible resin binder is essential. For standard outdoor applications, Washed Pebbles for Permeable Floors 25kg are a reliable choice. If you are using white or light stones, opt for a dedicated polyurethane binder such as Polirock to avoid yellowing over time. For coloured or darker aggregates, a clear epoxy binder like Trasparente is ideal. Always mix the aggregate with the binder before laying and ensure your base is prepared for proper drainage.

When This Matters

Selecting the right gravel and using the recommended quantity is crucial for gardens, driveways, and public paths where efficient drainage and a slip-resistant surface are priorities.

Related guides

How Much Gravel Is Needed For Permeable Flooring

Understanding how to choose and apply gravel (aggregates) ensures your permeable flooring matches both your performance needs and visual preferences. For further details on quantities and installation, return to our main guide on how much gravel is needed for permeable flooring.