An angular flint
Moonstone is available in a range of sizes to suit your landscaping project:
10mm, this is a small mix for driveways and paths
20mm, this is ideal for paths and driveways as the slate lays flat and even
40mm, this is bold & distinctive, with interesting shapes for borders, raised beds and impact design
How much you need will depend on the depth of the slate and effect you are wishing to create.
However, as a guide please allow 1 bulk bag for every 15m2 (at a depth of 50mm)
Your eco bulk bag will hold aprox 900kg, saving you extra money