What You’ll Need

• “Epoxyprimer” – Universal Water-Based Two-Component Epoxy Floor Primer for surface pre-treatment (essential for concrete, timber, tiles, or screeds)
• “Trasparente” – Epoxy Binder for Coloured Pebbles and Grits for coloured or dark aggregate resin floors
• “Polirock” – Polyurethane Binder for White Stones, 2kg Two-Component Kit if working with white or light stone aggregates needing UV stability
• “Flowstone” – Complete Permeable Floor Kit with Pebbles and Resin (for complete system, including resin, aggregate and applicator guidance for permeable outdoor floors)
• Protective gloves, mixing paddle, suitable trowels, roller or brush, and a cement mixer for large areas

Step 1: Prepare the Surface

A solid, clean base is the foundation for a successful resin floor. Remove any dust, grease, loose material or organic debris from the substrate. Concrete should be fully cured, dry, and free of cracks. Timber, screeds, or tiles must be stable and well-fixed.

Ensure a dust-free and stable substrate before application. Use a vacuum if necessary. Surface levelling or local repairs may be needed for uneven areas.

To enhance adhesion and lifespan, applying a primer is highly recommended. Epoxyprimer is ideal for this step, suitable for a broad range of surfaces including concrete, timber, ceramic tiles, and screeds. Roll or brush on the primer and let it cure for 24–48 hours. Avoid proceeding until the primer is fully dry.

Step 2: Mix the Resin and Aggregate

Once your substrate is primed and cured, you can move on to blending your resin and chosen aggregate. The type of binder depends on your aggregate: for coloured or dark pebbles, opt for the Trasparente Epoxy Binder; for white stones, use the Polirock Polyurethane Binder. Refer to your product guidelines for mix ratios—typically 6 to 8 kg of aggregate per 1 kg of binder.

Use a cement mixer for larger batches, ensuring the resin coats every stone for structural integrity and a seamless finish. Work efficiently, as resin systems have a limited pot life and begin curing once mixed. Blend resin and aggregate thoroughly for best results.

Step 3: Apply and Level the Mixture

Spread the resin and aggregate blend evenly over the prepared surface. Begin at one corner and work systematically to prevent foot marks and ensure complete coverage. Use a trowel to achieve the desired thickness—typically 12–14 mm for standard decorative floors and up to 20 mm for driveways. Compact the mix gently for a uniform, level appearance and to ensure full bond with the base.

Avoid pauses during application, as resin can begin to set and cause visible joins. If needed, a spiked roller can help remove air bubbles and ensure an even finish. For full kits with combined components and instructions, consider the Flowstone Complete Permeable Floor Kit.

Step 4: Allow to Cure and Inspect

Resin flooring needs time to harden and reach full durability. Allow full curing before subjecting the floor to traffic. As a general rule, pebble resin floors are walkable after about 10–12 hours at 20°C, but full mechanical and chemical resistance develops after 24–48 hours. Environmental factors like temperature and humidity will affect curing times. Shield the area from rain, dust, and debris during this period.

Carefully inspect the finished floor for any patches or inconsistencies. Light sanding or an additional thin layer of resin can repair minor surface defects if necessary, but avoid heavy traffic before the full cure.

Tips, Common Mistakes, and Troubleshooting

Planning and precision are vital for a flawless resin floor. Always check substrate moisture—damp or unprimed bases can compromise adhesion. Avoid applying resin on damp or unprimed surfaces.

Measure resin and aggregate accurately and mix thoroughly. Never try to stretch the working time by adding water or thinning resin, as this weakens the final result. In colder conditions, allow longer curing times. If bubbles or unevenness appear, a spiked roller or light sanding after curing can help correct the finish.