20mm Blue Slate Chippings Bulk Bag (800kg)

20mm blue slate chippings produced from natural slate quarries in Wales. Crushed and carefully screened to a nominal 20mm size, these chippings have a flat, angular profile that allows each piece to interlock when laid. This natural “locking" action creates a firm, stable surface that resists shifting underfoot, unlike rounded aggregates which tend to move or roll.Their structure also maintains excellent drainage, preventing surface water from pooling. This makes them highly practical for garden paths, driveways, beds, and borders, as well as for decorative ground cover where both function and appearance matter. Blue slate offers a shifting spectrum of cool tones, from light grey-blues through to deeper blue shades with occasional green or metallic accents. In dry conditions the surface appears muted and subtle, but once wet it transforms into a rich, dark blue-grey. This contrast adds movement and seasonal interest, making it a versatile choice for year-round landscaping. Beyond appearance, the slate is permeable, helping water drain through easily; durable, resisting frost and heavy rain; and low maintenance, needing only occasional raking or top-ups. Unlike organic mulches, it does not rot or decompose, ensuring a long-lasting surface.