Understanding Aggregate Coverage Rates

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Accurately estimating aggregate coverage rates is crucial for a smooth patio installation. Knowing how much aggregate you’ll need helps avoid wasted materials and ensures robust, even surfaces.

What Affects Aggregate Coverage?

Coverage rates depend on factors like the thickness of the aggregate layer, the chosen aggregate size, and the intended finish. For resin-bound patios, a typical application sees aggregates laid at around 15-18mm depth for pedestrian use. Laying thicker sections or using larger stones will require more material.

Estimate Your Aggregate Requirements

To calculate the amount needed, multiply your patio’s surface area by the target depth. For instance, using pre-washed pebbles such as Washed Pebbles for Permeable Floors, one 25kg bag typically covers around 1m² at a standard resin-bound patio thickness. Coverage may vary with type and size, so check product specifics and always allow a little extra for edges and wastage.

Practical Tips for Patio Projects

• Order aggregate in one batch to ensure colour consistency across your patio surface.
• When combining with a resin binder, as found in systems like the Flowstone Complete Kit, follow the recommended aggregate-to-resin ratio. A typical mix is 6–8kg of aggregate per 1kg of binder, but always refer to product guidelines for your chosen system.

When Coverage Rates Matter Most

Getting coverage rates right is particularly important for patios with irregular shapes or slopes, as uneven application can result in patchy surfaces or material shortages. If you’re creating a permeable finish, using consistent amounts will help support proper drainage performance as well.

Related products

• Washed Pebbles for Permeable Floors 25kg – Outdoor Resin-Bound Surfaces
• "Flowstone" – Complete Permeable Floor Kit with Pebbles and Resin
• "Polirock" – Polyurethane Binder for White Stones, 2kg Two-Component Kit

Related guides

• How Much Aggregate Do I Need For A Patio

By understanding aggregate coverage rates, you’ll be able to confidently plan your patio project and select products suited to your needs. For further advice or to explore suitable aggregates and complete kits, visit our patio FAQ resources.