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Decorative Gravel

Black Basalt Gravel 20mm Bulk Bag

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Black Basalt Gravel 20mm Bulk Bag

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Qty From Qty To Unit Price
1 2 £95.00
3 4 £92.15
5 6 £90.25
7 9 £88.35
10 £85.50
Availability: 

Quantity: 1000kg (1 tonne) bulk bag.

Coverage: 1000kg of 20mm black gravel stones will typically cover 12m² (12m x 1m) at a depth of 50mm.

Consists of: 10mm - 20mm black basalt gravel.

Usage: Black basalt gravel is ideal for paths, driveways, borders, rockeries, and water features. Suitable for use in and around ponds as substrate or dressing due to being fish safe once washed to remove any contaminants.

Need 10 or more bulk bags? Call now for competitive pricing.

01282 428211
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Please note: Whilst we take care to ensure our photography is representative of the products we sell, many consist of natural materials and therefore variations in colour and form may occur.

Our 20mm black basalt gravel - sometimes referred to as black granite gravel - provides a stunning contrast to garden planting, green lawns and a variety of architectural styles. A dynamic aggregate that's a neutral dark grey when dry before turning a shiny black when wet, black garden gravel has many uses and will transform your outdoor space. Regularly used on driveways, our black driveway gravel has proven itself as a stable and robust surface due to the angular black gravel stones that closely interlock. This also ensures stability underfoot unlike some larger aggregates that can be uncomfortable to walk on. Black basalt gravel 20mm is a truly versatile product that can even be used as a topping material on flowerbeds, borders and pots due to its inert nature. This also makes it safe for fish when used as a substrate or dressing material in and around water features - just ensure that the gravel is thoroughly washed to remove any contaminants prior to being laid.

20mm black gravel is a natural product that appears dark grey when dry and may vary in colour and size. Our bulk bags consist of stones 10mm - 20mm in size due to the mechanical screening process used.

Key features:
  • Dark grey when dry, shiny deep black when wet which makes for a stunning contrast to garden planting and green lawns.
  • Neutral grey/black colour is versatile and can be paired with a variety of architectural styles, from traditional to ultra modern buildings that benefit from a clean finish.
  • A hard-wearing aggregate that's suited to use on driveways and busy paths.
  • Angular stones that interlock readily and are stable underfoot.
  • Excellent drainage properties.
  • Can suppress weeds effectively by preventing light from reaching the sub-base below.
  • Our black basalt stones are inert and therefore safe for fish and can be used as a flowerbed or plant topping material.
  • Environmentally friendly and sustainable.
  • Contact us if you require 10 or more bulk bags.
  • Aggregate type:
    Black basalt gravel
  • Bag size:
    1000kg (1 tonne) bulk bag
  • Coverage:
    1.74
  • Weight:
    1000kg
Based on 1 review(s)
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David Briggs - Rawtenstall

Excellent service

Gravel is perfect for what we needed but its the service that impressed me most and the driver who helped make life easy for us by driving down a lane he had to back up out of so that we didn't have to barrow the gravel. Wouldn't hesitate to recommend and will use again definately.