Blue Slate 40mm
Available in: Bulk Bag, Large Pack
Fish friendly: Yes
Stone size: 40mm
Blue Slate Decorative Aggregate in a bold 40mm size, in cool blue-grey and charcoal tones with a distinctive flat, angular shape. Muted when dry and richly blue when wet, it’s perfect for larger borders, feature areas, and water features. Hard-wearing, free-draining, and available in bulk bags or large packs.
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| Pack Size |
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Bulk Bag |
Large Pack |
Description
Make a bold, natural statement in your outdoor space with our Blue Slate Decorative Aggregate in a larger 40mm size. These generous slate pieces showcase beautiful cool blue-greys alongside deeper charcoal tones, with the flat, angular, plate-like shape that makes slate so instantly recognisable. The bigger flakes give a chunkier, more dramatic finish that brings real texture and a refined, contemporary edge to any garden, border, or feature area.
The larger slate pieces stack and overlap to create a striking, layered surface with plenty of depth and presence. When dry, the slate has a soft, muted blue-grey tone; once wet, the colours come alive, deepening into rich blues and near-blacks with a subtle sheen that shows off the stone’s natural beauty at its best.
Hard-wearing and versatile, this aggregate is ideal for a wide range of landscaping projects. Use it to dress larger borders and beds, create bold decorative features, top water features, or define low-maintenance areas with a clean, contemporary layer. The 40mm size is particularly effective for bigger spaces and statement areas, and pairs beautifully with light paving, timber, grasses, and architectural planting, where its cool tones provide a stylish contrast.
As well as looking great, slate is low-maintenance and free-draining, helping to suppress weeds and keep surfaces neat all year round. The larger 40mm flakes offer great coverage and a bold, textured finish, and their size makes them well suited to decorative borders and feature areas rather than walked-on paths.
Supplied in convenient bulk bags or large packs, our Blue Slate Decorative Aggregate makes it easy to order exactly the right amount for projects of any size. As a guide, we recommend a coverage depth of around 50mm for the larger 40mm pieces.
For help with quantities and coverage, please view our aggregate calculator (click here).