#10 Stone Dust (Granite Screenings)
#10 Stone Dust (Granite Screenings)
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Product Description
Product Description
#10 Stone Dust (Granite Screenings) — The Spec'd Fines That Lock Walkways & Paver Joints
#10 Stone Dust is the quarter-minus by-product of crushing granite — passes a ⅜" sieve, with a tight band of fines all the way through #200. It is the spec name (AASHTO M43 No. 10 / ASTM D448 No. 10) for what most yards call "screenings" or "stone dust": the material that compacts hard, finishes a walkway, locks pavers in their joints, and gives a stable footing under stepping stones. If a plan calls for "screenings" or "#10," this is the material.
At a glance
| Spec name | #10 Screenings (AASHTO M43 / ASTM D448 size No. 10) |
| Material | Crushed granite screenings, native to the Boston area |
| Nominal size | Passes ⅜" (¼"-minus, including fines through #200) |
| Composition | Granite chips, sand, and fines — angular, dry-screened |
| Weight | ~2,700 lbs per cubic yard (~1.35 tons) |
| Coverage | 1 yd³ covers ~80 sq ft at 4" depth (compacted) |
| Also known as | Stone dust, screenings, quarter-minus, pack, manufactured sand, decomposed granite (regional) |
| Sold by | The cubic yard, bulk dump truck delivery |
What it's good for
- Final leveling course and joint fill under and between brick and concrete pavers
- Compacted walkway base (paths, garden walks, stepping-stone runs)
- Riding arena and round-pen footing (with sand blend)
- Top dressing on driveways for a smooth, locked surface
- Setting bed for flagstone and bluestone in dry-laid applications
- Trench backfill where fine, compactable material is wanted
Gradation (AASHTO M43 / ASTM D448 — Size No. 10, typical band)
| Sieve size | % passing |
|---|---|
| ⅜" (9.5 mm) | 100 |
| #4 (4.75 mm) | 85 – 100 |
| #8 (2.36 mm) | 65 – 90 |
| #16 (1.18 mm) | 45 – 70 |
| #30 (600 µm) | 30 – 50 |
| #50 (300 µm) | 17 – 30 |
| #100 (150 µm) | 8 – 17 |
| #200 (75 µm) | 3 – 10 |
How much do I need?
For a 200 sq ft walkway with a 2" stone dust setting bed, plan on about 1.25 cubic yards. For paver joint sweep-in, a yard covers approximately 2,000–3,000 sq ft of paver field depending on joint width. Use the material calculator at the top of the page for custom dimensions, and round up 5–10% for compaction.
How #10 compares to neighboring products
- #10 vs. #89: #10 packs solid (lots of fines). #89 drains (clean joint stone). Choose by whether the joint should compact or drain.
- #10 vs. mason sand: Both are fine. Mason sand is rounder and used for mortar. #10 is angular and locks under compaction — better for walkway setting beds.
- #10 vs. dense pack: Dense pack (or #610) has a ¾"–1" top stone with fines. #10 is just the fines. Use #10 to top a dense-pack base.
- Blue-gray color variant: Prefer a blue-gray color profile? See our Blue-Gray Granite Dust — same #10 spec, blue-gray granite color.
Frequently asked questions
What is #10 stone dust used for?
Walkway setting beds, paver joint fill, top dressing on driveways, and footing for stepping stones and flagstone. It compacts to a near-solid layer that locks the surface above it in place.
Is stone dust the same as #10?
Yes — "stone dust" and "screenings" are the trade names; #10 (AASHTO M43 / ASTM D448) is the formal spec name. Same material.
Does stone dust drain?
Not well. The fines pack tight, so water sheds across the surface rather than percolating through. That's a feature for walkways (no settling) but a bug if drainage is needed — for drainage, use #57 or #89 instead.
Can I use stone dust under pavers?
For dry-laid stepping stones and flagstone, yes — it is the standard setting bed. For interlocking concrete pavers, contemporary ICPI guidance prefers concrete sand for bedding; stone dust is still used for joint sweep-in on some installs.
How much does a cubic yard of stone dust weigh?
About 2,700 lbs per cubic yard, or roughly 1.35 tons.
Do you deliver stone dust in the Boston area?
Yes — same-day and next-day bulk delivery across Suffolk, Middlesex, Norfolk, and Plymouth Counties. No minimum order; flat-rate delivery shown in the price breakdown.
Same-day and next-day bulk delivery, no minimum order. We deliver #10 stone dust across Suffolk, Middlesex, Norfolk, and Plymouth County.
Pair with our Dense Pack ¾" to minus or #610 Stone as the compacted base below.
Order today — the spec'd screenings every walkway installer reaches for.
Detailed Specs & Gradation
Detailed Specs & Gradation
Spec identity
| Standard | AASHTO M43 / ASTM D448 — Size No. 10 |
| Material | Crushed granite screenings, native to the Boston area |
| Nominal size | Passes ⅜" (¼"-minus, fines through #200) |
| Weight | ~2,700 lbs/yd³ (~1.35 tons) |
Gradation (AASHTO M43 / ASTM D448 — Size No. 10)
| Sieve size | % passing |
|---|---|
| ⅜" | 100 |
| #4 | 85 – 100 |
| #8 | 65 – 90 |
| #16 | 45 – 70 |
| #30 | 30 – 50 |
| #50 | 17 – 30 |
| #100 | 8 – 17 |
| #200 | 3 – 10 |
Delivery Info
Delivery Info
- Same-day & next-day delivery available — weekends fill fast, order early.
- Curbside or on-property drop — let us know at checkout.
- Up to 6 yds per load for dense materials (gravel, soil, rock, sand) — mulch loads carry up to 10 yds. $100 flat rate, no minimum order.
- Job site delivery available — live load tickets and signed BOLs on request.
- Questions? Call (617) 645-0987 or see full delivery info →
