How to Prepare the Base for Permeable Resin Courtyards

Q: Step-by-Step Base Preparation Guide

Excavation: Dig to the required depth, usually around 200–250mm for pedestrian areas, to remove topsoil and soft spots. Sub-base installation: Lay and compact an open-textured sub-base (such as MOT Type 3), ensuring it is level and free-draining. Mechanical compaction is recommended for stability. Permeable bedding layer: Apply a thin bedding layer, such as permeable sharp sand or clean grit, to smooth any unevenness before applying the resin-bound system. Edge restraints: Fit robust edging to hold the surface firmly in place and create clean lines. Once your base is well prepared, you’re ready to apply your resin system, such as the Flowstone Complete Kit , which provides all materials and clear instructions for a successful build.

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Prepare the Base for a Permeable Resin Courtyard

Properly preparing the base is a crucial first step in creating a permeable resin courtyard. A well-built foundation not only supports the surface but also ensures effective drainage and long-term strength.

Understanding the Role of a Permeable Base

The base in a resin-bound courtyard needs to facilitate water movement, allowing rainfall to pass through and disperse into the subsoil. An unsuitable base can impair drainage and compromise the surface’s durability. For residential courtyards and footpaths, a stable, well-compacted sub-base—commonly made from MOT Type 3 or similarly open-graded aggregates—is preferred. This structure supports weight and keeps the surface free from puddles.

Step-by-Step Base Preparation Guide

Excavation: Dig to the required depth, usually around 200–250mm for pedestrian areas, to remove topsoil and soft spots.
Sub-base installation: Lay and compact an open-textured sub-base (such as MOT Type 3), ensuring it is level and free-draining. Mechanical compaction is recommended for stability.
Permeable bedding layer: Apply a thin bedding layer, such as permeable sharp sand or clean grit, to smooth any unevenness before applying the resin-bound system.
Edge restraints: Fit robust edging to hold the surface firmly in place and create clean lines.

Once your base is well prepared, you’re ready to apply your resin system, such as the Flowstone Complete Kit, which provides all materials and clear instructions for a successful build.

When Careful Base Preparation Matters

Attention to base structure is especially important in areas prone to heavy rainfall or where water pooling has been a problem. Investing time in this stage ensures your permeable resin courtyard remains practical and visually appealing for years to come.

Related guides

How Do You Build A Permeable Resin Courtyard

Preparing a quality base is the key to building a reliable, permeable resin courtyard. Once your foundation is established, you’ll be set for the next steps, as covered in our full guide on creating a permeable resin courtyard.