How Thick Is a Resin Driveway?

The thickness of a resin bound driveway is one of the most important factors in its strength, durability, and appearance. Too thin, and the surface may wear out quickly; too thick, and you could be paying for unnecessary material. Knowing the right depth helps ensure your driveway performs well for years.

This guide draws on the experience of specialists in driveway construction and explains the typical thickness for resin driveways, how it’s decided, and why it matters. For details on installation and design options, see our page on resin bound driveway installation.

Key Takeaways

• Standard resin driveway thickness is 15–20mm.

• The right depth depends on expected use and aggregate size.

• A stable base is just as important as resin thickness.

• Thicker layers may be needed for heavier traffic.

Standard Thickness for Resin Bound Driveways

Most resin bound driveways are laid to a depth of 15–20mm. This provides enough strength for everyday use by cars, vans, and pedestrians while maintaining a smooth appearance.

The exact thickness depends on the size of the stones used in the mix — larger aggregates may require a slightly deeper layer.

Factors That Influence Thickness

Type of Traffic

Driveways used only for light vehicles may be fine at 15mm. Areas that will see heavy vans or frequent turning may benefit from a 20mm depth for added strength.

Base Condition

A stable, level base supports the resin layer evenly. If the base is uneven or has minor imperfections, a slightly thicker layer can help achieve a uniform finish.

Aggregate Size

Common stone sizes range from 1–5mm. Larger stones may need more resin coverage, which can affect the final thickness.

Why Thickness Matters

A driveway that’s too thin is more prone to cracking, loosening stones, and wearing down under vehicle weight. On the other hand, going too thick can increase material costs without significantly improving performance — especially if the base is already strong.

Thickness for Other Resin Applications

While driveways require a 15–20mm layer, resin bound surfaces used for footpaths, patios, or decorative areas can be slightly thinner (around 12–15mm) since they don’t need to withstand the same loads.

Installing at the Right Thickness

Installers use trowels, screeds, or levelling bars to ensure an even depth across the surface. Consistency is key to avoiding weak spots and ensuring the driveway’s appearance remains uniform.

Summary

The ideal thickness for a resin driveway is usually between 15mm and 20mm. Choosing the right depth for your specific use and ensuring it’s laid evenly over a stable base will give you a long-lasting, attractive surface.