Engineered Wood Fiber (EWF) Specifications

Installing Engineered Wood Fiber is a straightforward process that results in a safe, natural-looking play surface. Proper site preparation and containment are crucial for longevity and performance.

Step 1: Ground Preparation & Containment

A solid, well-drained foundation and a robust perimeter are essential for a stable EWF surface.

1. Clear the Area: Remove all grass, weeds, rocks, roots, and debris from the designated area. The sub-grade should be firm.
2. Establish a Level Base: Grade the soil to ensure it is level and has a slight slope (1-2%) for positive drainage away from structures.
3. Install Containment: Securely install a permanent, solid edging frame around the entire perimeter. The height of this edging should accommodate the full, uncompacted depth of the EWF (e.g., 300mm). This is critical to contain the loose material and maintain the required safety depth.

Step 2: Installing Drainage & Geotextile Fabric

Proper drainage and a weed barrier are key to extending the life of your EWF and keeping it clean.

1. Install Drainage (Recommended): For optimal performance, especially in wet climates, install a simple sub-surface drainage system like a gravel trench with a perforated pipe.
2. Lay Geotextile Membrane: Roll out the weed-suppressing membrane across the entire prepared base, running it up the inside edges of your containment border. Overlap any joins by at least 150mm. This layer separates the EWF from the soil, improves drainage, and prevents weed growth.

Step 3: Filling with Engineered Wood Fiber

The final step is to fill the area to the correct depth to ensure safety compliance.

1. Transport the EWF: Using a wheelbarrow, transport the EWF from the delivery point into the contained play area. Avoid driving machinery directly on the geotextile fabric.
2. Fill to Depth: Dump the EWF into the area, starting from the furthest corner and working your way out. Fill the entire area to the top of your 300mm (12-inch) containment border.
3. Level the Surface: Use a landscape rake to spread the fibers evenly across the entire area. Ensure a consistent, loose depth of 300mm throughout. The surface will naturally compact by about 25% through use.
4. Initial Compaction (Optional): For immediate accessibility, you can lightly water the surface and use a hand tamper or roller to gently compact the top layer.