What You’ll Need

• “Flowstone” – Complete Permeable Floor Kit with Pebbles and Resin – A comprehensive kit for creating robust, decorative, and permeable pebble floors outdoors.
• “Epoxyprimer” – Universal Water-Based Two-Component Epoxy Floor Primer – Ensures solid adhesion and stability for substrates like concrete or screed.
• “Trasparente” – Epoxy Binder for Coloured Pebbles and Grits – Delivers a clear, UV-resistant bond for coloured stones and decorative surfaces.
• “Polirock” – Polyurethane Binder for White Stones, 2kg Two-Component Kit – Specially formulated for outdoor floors with white or light natural aggregates.
• Protective gloves, trowel or float, mixing bucket or cement mixer (for larger areas).
• Masking tape, dustpan and brush, and clean-up cloths.

Step 1: Prepare the Surface Thoroughly

Ensure your surface is clean, level, and free from loose debris. Start by brushing or vacuuming the floor, removing any weeds, oils, moss, or dirt. For best results, fill in holes, repair cracks, and confirm the base is even—resin-bound floors require a stable foundation.

For outdoor installations, make sure the substrate allows drainage or is adequately sloped to direct water run-off. If you’re dealing with a porous surface such as concrete or screed, moisture content should be minimal, as excess dampness can affect adhesion and curing.

If your project involves indoor or sensitive surfaces like newly laid concrete, priming is highly advisable. Epoxyprimer – Universal Water-Based Two-Component Epoxy Floor Primer delivers strong adhesion and prevents future delamination, especially on substrates like tiles, timber, or screeds.

Step 2: Mix Your Resin Binder and Aggregate

Mix your resin binder and chosen stones thoroughly. Resin-bound floors combine a two-part binder with decorative aggregates (stones, grits, pebbles). Always follow the resin manufacturer’s recommended mixing ratios—typically, about 3% resin by weight of aggregate for optimal strength and permeability. Use a clean bucket or a cement mixer for larger projects.

If using coloured stones or grits, opt for “Trasparente” – Epoxy Binder for Coloured Pebbles and Grits for a transparent, UV-resistant finish. For white or light gravel, select “Polirock” – Polyurethane Binder for White Stones to maintain true colour over time.

Pour the resin components together and mix thoroughly before adding your aggregate. Once the resin is activated, combine with aggregates and continue mixing until every stone is uniformly coated. Work swiftly, as open resin mixtures have a limited working time before starting to cure.

Step 3: Apply the Resin-Aggregate Mix Evenly

Apply the resin mix evenly, spreading to your desired thickness. Pour the blended material onto the prepared surface in manageable sections. Use a trowel or float to spread and compact the mix to the required depth, aiming for a level and seamlessly packed layer. Aim for a standard thickness, typically 15–20mm, but always confirm specific floor and usage requirements.

Work in small areas, overlapping slightly to prevent visible joins. Apply gentle but firm pressure to ensure a compact, even surface with tight aggregate distribution. Regularly wipe tools to reduce resin build-up and create a neat finish.

Step 4: Cure and Protect the Resin Floor

Protect your new resin floor from weather and traffic during curing. Allow the floor to cure undisturbed for the period specified by your resin system—generally 24–48 hours for foot traffic, with longer times needed for driveways or vehicle access. Check the weather before starting an outdoor project, and cover the area if rain is forecast within the curing window.

Once fully hardened, gently remove masking and clean up the area. Your resin-bound floor is now ready for use, offering a slip-resistant, visually appealing, and easy-to-maintain surface resistant to the elements.

Tips, Common Mistakes, and Troubleshooting

Plan every step in advance and check weather forecasts before outdoor applications. Use scales for precise resin and aggregate ratios and avoid over-watering the site. Incomplete mixing can cause patchy or weak areas—mix thoroughly and work briskly to stay within working time limits. Always adhere to curing schedules and avoid early use, as incomplete hardening can lead to marks or weak spots.

For surfaces susceptible to movement, always prime, and never pour resin onto wet or dirty substrates. If you observe bubbling or discolouration, check for trapped moisture or overworked resin. Resist the urge to over-trowel, as it may cause surface imperfections.