Stone Dust: Uses, Coverage & Calculator
Fine crushed screenings that compact into a smooth, level bed for pavers, flagstone and patios.
What is Stone Dust?
Stone dust, also called screenings or quarry dust, is the fine material left after crushing and screening stone. It ranges from about 1/8″ down to powder.
It spreads and screeds easily and compacts into a hard, level surface, which is why many installers use it as a setting bed for pavers and flagstone and as a top layer on paths.
| Specification | Details |
|---|---|
| Size | About 1/8″ to fines |
| Shape | Fine, angular |
| Fines | High |
| Also known as | Screenings, quarry dust, rock dust |
| Approx. weight | 1.35 tons (~2,700 lbs) per cubic yard |
Best uses
- Setting bed for pavers and flagstone
- Leveling under above-ground pools
- Compacted walkways
- Filling joints between flagstones
Not ideal for
- Permeable paver systems
- Drainage areas
- Thick base layers on its own (use 3/4″ minus first)
How much Stone Dust do I need?
Enter your area and depth to get cubic yards and tons. Results update as you type.
You'll need about
Based on about 1.35 tons (~2,700 lbs) per cubic yard. Actual weight varies with moisture and source, so treat results as an estimate.
Recommended depth by project
Typical installed depths for Stone Dust. Check local codes or your contractor for structural work.
| Project | Depth | Notes |
|---|---|---|
| Paver setting bed | 1″ | Over a compacted stone base |
| Pool leveling pad | 2″ | Screed perfectly level |
| Path surface | 2″ | Compact firm |
How to install Stone Dust
A few steps make a big difference to how long it lasts.
- Build the baseCompact 4″ of 3/4″ minus or crushed run first.
- Screed the dustSpread about 1″ and screed it flat with rails and a straight board.
- Set and compactLay pavers or stone and compact them into the bed.
Stone Dust questions
Quick answers to what customers ask most.
Stone dust or sand under pavers?
Both are used. Stone dust compacts harder; concrete sand drains better. Many paver manufacturers specify sand, so check their guidelines.
How much area does a ton cover?
At 1″ deep, about 240 sq ft per ton.
Does stone dust drain?
Poorly once compacted. Slope paved areas so water runs off the surface.
Related materials
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Read guide & calculator →Ready to order Stone Dust?
Delivered by the ton or cubic yard to your driveway or job site.