What Base Is Best for Resin-Bound Gravel?

Ideal Base Materials for Resin-Bound Gravel

For longevity and water drainage, resin-bound gravel is best installed over a base that is strong, stable, and not prone to movement. Typically, the recommended bases are:

• Concrete: Offers maximum stability and is widely used for driveways and patios. Ensure the slab is fully cured and free from cracks.
• Tarmac (Asphalt): Common for driveways, tarmac provides both flexibility and load-bearing capability. It should be dry, clean, and level before installing the resin system.
• Compacted Hardcore: Suitable for garden paths or areas where full-depth construction is needed. The hardcore must be well-compacted with a blinded top layer to receive the resin-bound system.

Avoid installing resin-bound gravel directly onto unprepared soil, loose ground, or areas with ongoing movement, as this can lead to cracking and reduced lifespan.

Preparing Your Base for Best Results

Before laying your resin-bound gravel, inspect the base for structural integrity and make necessary repairs. Ensure it is:

• Completely dry at the time of installation, as moisture can affect resin bonding.
• Free from oil, dust, or organic material to prevent poor adhesion.
• Level and well-compacted to support even distribution of the resin and stones.

For permeable systems, make sure there is an appropriate sub-base to allow water to drain freely, especially if opting for sustainable drainage solutions. Using a complete kit such as the Flowstone Complete Permeable Floor Kit helps streamline both preparation and application.

When the Right Base Matters

Choosing the correct base becomes especially important for high-traffic driveways and outdoor areas exposed to frequent freeze-thaw cycles. A firm, properly prepared foundation minimises movement and cracking, preserving both function and appearance over time.