How do I calculate the cost per m² of a resin-bound floor?

Understanding the Coverage Rates

Each resin and aggregate product provides a recommended coverage rate, usually listed on the packaging or product guidance. This figure tells you how many square metres you can cover per kit or per quantity purchased. Be aware that thickness of application, surface type and design choices may affect the actual coverage, so allow a small margin for these variables.

Step-by-Step Cost Calculation

• Add the price of your chosen resin binder to the cost of enough aggregate to cover your planned area, based on manufacturer spreads (for example, a 25kg bag of washed pebbles per square metre at standard thickness).
• Divide the total material cost by the number of square metres these quantities are designed to cover.
• Multiply by your total area for a full project estimate, including a small allowance for wastage or slight overuse.

Ready-to-use kits like the Flowstone Complete Permeable Floor Kit simplify this: select a kit sized for your surface, and materials and instructions are included for accurate coverage and mixing rates.

When Accurate Costing Matters

Getting a clear-per-metre cost matters most for larger installations, driveways or where budget control is essential. For custom colours or unique finishes, double-check the recommended coverage for each specific resin and aggregate, as these can vary.