Cubic yards, tons, and coverage for decomposed granite (DG) projects. Enter your area dimensions and depth.
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Decomposed granite (DG) is granite rock that has naturally weathered into small particles — typically ¼ inch and smaller. It compacts into a firm, walkable surface that's more natural-looking than concrete or pavers. DG weighs about 3,000 lb per cubic yard (1.5 tons), making it one of the denser landscape materials. It's the go-to surface for pathways, patios, bocce courts, and xeriscape ground cover.
3–4 inches for pathways and patios (after compaction). 2–3 inches for decorative ground cover. For DG patios and paths, compact the material with a plate compactor after spreading — it firms up significantly. Without compaction, DG stays loose and tracks into the house.
For walkways and patios, yes — lay DG over 2–4 inches of compacted crushed stone base for stability and drainage. For decorative ground cover in beds, DG can go directly on landscape fabric over native soil. The base layer prevents the DG from mixing with underlying soil and creating mud.
DG is one of the most cost-effective hardscape surfaces — typically $40–$60 per ton delivered, compared to $150+ per ton for flagstone. The tradeoff: it requires edging to prevent migration, needs periodic replenishment (every 2–3 years), and can get muddy in heavy rain without stabilizer. For a more permanent surface, use stabilized DG (mixed with a resin binder) — it compacts harder and resists erosion, though it costs about 2× more.