Excavate the area to the required depth and prepare the ground appropriately. A suitable geotextile membrane may be required to prevent weed growth and stop the subgrade from mixing.

Spread evenly over the prepared sub-base to the recommended depth. Rake or lay by hand to ensure an even, flat distribution across the entire area.

Check the finished surface level and slope to ensure proper drainage away from surrounding structures. Ensure the depth is consistent to prevent exposed patches or uneven surface layers.

Requirements vary according to ground conditions, loading, and the intended use of the surface. Follow the project specification or seek professional advice where appropriate.

Available for collection from our Rugby branch or local delivery using our own fleet.

Bulk bags will normally be delivered by a crane-equipped lorry. Delivery is kerbside and the final offloading position is always subject to safe access and the driver’s discretion.

Please tell us before delivery about:

• Narrow roads or restricted entrances
• Parked vehicles or limited turning space
• Overhead cables, trees or other obstructions
• Soft, sloping or unsuitable ground
• Any other access concerns

Enter your postcode on the product page to check your delivery area. We’ll confirm the delivery date after your order is placed.

What are 20-40mm Zebra Pebbles made of?

They are a mixture of smooth, naturally rounded black basalt and white dolomite stones. This gives them a distinct, high-contrast monochrome look.

What are the best uses for this size stone?

At 20–40mm (roughly 0.8 to 1.6 inches), these stones work exceptionally well for:

• Garden borders and flower beds

• Rockeries and alpine gardens

• Pot toppers and raised planters

• Water features like fountains and dry riverbeds

Are 20-40mm Zebra Pebbles suitable for driveways or paths?

They can be used for decorative footpaths, but they are generally not recommended for driveways. Rounded pebbles roll under tires and shift under heavy foot traffic. Angular gravels interlock better for driveways, whereas rounded 20-40mm stones are best reserved for accent areas.

Do the stones look different when wet?

Yes. When dry, they have a softer, dusty grey/charcoal and off-white appearance. When wet, the black basalt deepens to a rich jet black and the white dolomite pops, making them look especially striking near water features.