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 is the main difference between 20mm and 40mm Plum Slate Chippings?

The 40mm Plum Slate Chippings are larger and flatter than the 20mm variant. While 20mm slate settles more tightly for pathways, 40mm slate offers a bolder, more structural look that is ideal for ground cover over expansive beds, rockeries, and larger landscaping features.

What colors will I see in 40mm Plum Slate, and do they change when wet?

Plum Slate features a rich mix of deep purple, plum, and subtle heather-grey tones. When dry, the large flat stones have a soft, matte pastel finish. When wet, the rich plum colors darken and intensify dramatically, adding strong visual interest during rain.

Is 40mm Plum Slate Chippings safe to use in and around fish ponds?

Yes, natural slate is completely inert and fish-friendly. It will not alter the pH level of pond water or leach harmful minerals into aquatic environments. It is recommended to wash the slate prior to placing it directly into a pond to remove any fine dust from transit.

Is 40mm Plum Slate suitable for driveways?

Plum slate is generally not recommended for driveways. Because slate is a naturally layered rock, heavy vehicular weight can crush the flat pieces, causing them to break down into smaller fragments over time. Harder angular aggregates like granite or basalt are better suited for driveways, whereas slate excels on garden borders, rockeries, and footpaths.

How does 40mm Plum Slate aid in weed control and moisture retention?

The large, flat shape of 40mm slate forms an effective, heavy cover over soil, blocking sunlight to suppress weed growth. When laid over a high-quality geotextile membrane, it also acts as an insulating layer that reduces water evaporation, helping underlying soil stay moist during warm weather.