How much resin is required per square metre?

Typical Resin-to-Aggregate Ratios

For pebble or decorative resin floors, the standard guideline is to use around 3% resin binder by weight of the aggregate. For example, if you’re working with 100 kg of stone, you’ll typically need about 3 kg of resin binder. This ratio delivers strong bonding and helps achieve an even surface finish, whether you’re installing a driveway, patio, or decorative path.

• For fine grits or denser finishes, a slightly higher percentage may be used.
• The precise amount can vary by aggregate size and intended surface performance.

Estimating Coverage and Ordering Resin

The coverage per square metre directly depends on both floor thickness and aggregate particle size. Most self-levelling or permeable resin kits—like the Flowstone Complete Permeable Floor Kit—are sized for specific surface areas and include guidance based on recommended binder-to-aggregate ratios. To avoid shortfalls, check the full kit instructions or consult with your supplier for the coverage rate at your planned thickness.

• For standard permeable floors, plan for a thickness of about 1–2.5 cm.
• Binder consumption typically ranges from 1.5–3 kg/sqm depending on thickness and aggregate size.
• More porous surfaces may absorb extra primer, increasing total resin needs.

When This Matters

Knowing your required quantity per square metre is especially important when ordering resin to avoid overbuying or running out mid-project. This is crucial for DIY installations, large surface areas, or when matching batches for continuous aesthetic finishes. Selecting the right resin—such as a clear binder for coloured pebbles or specialised primers for concrete—ensures both coverage and long-term durability.