How Much Aggregate for a Courtyard? Resin-Bound Coverage Guide

← Back to How much aggregate do I need for a courtyard?

Estimating how much aggregate to order is crucial for installing a resin-bound permeable courtyard. With the right amount, you’ll achieve a smooth, durable finish and minimise waste.

How to Calculate Aggregate for Your Courtyard

The calculation is straightforward if you’re using resin-bound systems made for permeable outdoor surfaces. As a rule of thumb, one 25 kg bag of Washed Pebbles for Permeable Floors 25kg covers 1 square metre at the recommended thickness for most residential courtyards.

Measure your courtyard’s length and width in metres.
Multiply to get the total area in square metres.
Order one 25 kg bag per square metre.

This simple approach keeps material estimates clear—no complicated conversions needed.

Choosing the Right Aggregate Kit

If you’re looking for an all-in-one solution, consider a complete kit such as the “Flowstone” Complete Permeable Floor Kit with Pebbles and Resin. Kits are sized by total area, helping you select the right coverage without manual calculations. Additionally, you can choose from a selection of colours and granule sizes to match your project’s aesthetic.

When Accuracy Matters Most

For intricate or unusually shaped courtyards, take time to sketch and break down the area into smaller rectangles or squares to ensure your aggregate estimate is precise. Ordering a small extra amount can also help cover unexpected slight variations in depth or shape.

Related guides

How Much Aggregate Do I Need For A Courtyard

Selecting the correct amount of aggregate brings you one step closer to a professional-looking, low-maintenance courtyard. For further guidance on other materials or installation queries, return to our main advice on how much aggregate you need for a courtyard.