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Material Sheet
Decorative Aggregate

Blue Slate

What is it used for

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Ideal for creating decorative borders, garden beds, and pathways, offering a polished and natural look.


Used for roof tiles due to its weather resistance and aesthetic appeal.

Mulch Substitute

Serves as an excellent alternative to organic mulch, helping to retain soil moisture and reduce weeds.

Brick Wall


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Size Range

Typically 20 mm to 40 mm


Usually sold in bulk bags (approximately 0.6 m³) or smaller bags (25 kg)

Weight (Bulk Bag)

Approximately 850 kg

Weight (25 kg Bag)

Approximately 25 kg

What it’s Made From

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Natural Slate

The primary material, sourced from quarries, known for its durability and unique color.


Used during processing and cleaning to remove dust and impurities.


Smaller slate pieces and crushed materials that add to the texture and variety.


Natural pigments inherent in the slate that provide its distinctive blue-gray hue.


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Large Blue Slate Chips

Description: Larger pieces of blue slate, typically used for more prominent landscaping features.

Applications: Decorative features, water gardens, and larger pathways.

Small Blue Slate Chips

Description: Smaller pieces of blue slate, providing a finer texture.

Applications: Garden beds, smaller pathways, and ground cover.

Blue Slate Paddlestones

Description: Flat, smooth stones often used for decorative purposes.

Applications: Water features, rockeries, and decorative borders.


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Tools Required

Shovel | Rake | Wheelbarrow | Tamper

Materials Required

Blue slate | Landscape fabric | Edging materials (optional)

Step-by-Step Guide:

  1. Preparation: Clear the area and level the ground. Lay down landscape fabric to prevent weed growth.

  2. Edging: Install edging materials if desired to keep the slate contained.

  3. Spreading Slate: Use a wheelbarrow to transport the slate to the site. Spread it evenly with a shovel.

  4. Leveling: Rake the slate to achieve a uniform layer.

  5. Tamping: Use a tamper to compact the slate, ensuring a stable surface.

  6. Finishing Touches: Check for any uneven areas and adjust as necessary. Add more slate if needed for the desired depth.

Technical Specification

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Size Range: 20 mm to 40 mm

Bulk Density: 1.5 - 1.7 tonnes/m³

Color: Blue-gray

Durability: Excellent for long-term use

Water Absorption: Low


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BS EN 12326: Slate and stone products for roofing.

Purchasing Quantities

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Single Units

Ideal for small projects, repairs, or when only a few bags are needed.

Bulk Bags

Typically sold in bulk, with each bag containing around 0.6 m³. This option is suitable for medium to large construction and landscaping projects.

Small Bags

Often sold in 25 kg bags, suitable for minor projects or additions to existing landscapes.

Environmental Impact

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Sustainability Considerations

Sourced from natural quarries, with environmental impact depending on mining practices and transportation.

Eco-friendly Alternatives

Recycled slate and locally sourced materials can reduce the carbon footprint.

Waste Reduction

Long-lasting material that requires minimal replacement, contributing to waste reduction.

Energy Efficiency

Low energy required for installation and maintenance compared to other construction materials.



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