#89 Stone (Crushed Granite)

#89 Stone (Crushed Granite) — The Small-Format Spec Stone for Paver Joints & Permeable Bases

#89 Stone is the ⅜"-top crushed granite that contractors specify by name for permeable paver joints, walkway finishes, and tight-pack drainage layers. Native Boston-area granite, angular, washed, and sized to the ASTM C33 / AASHTO M43 No. 89 gradation — small enough to lock pavers, large enough to drain. If a permeable-pavement detail calls for "#89 joint stone," this is it.

At a glance

What it's good for

• Permeable interlocking paver joints (the spec'd "#89 joint stone")
• Permeable paver leveling course (top of the open-graded base)
• Walkway finish layer over a compacted base
• Fine drainage stone near foundations and small culverts
• Septic system top dressing
• Decorative ground cover where a small, uniform stone is wanted

Gradation

Sized to nominal ASTM C33 / AASHTO M43 Size No. 89. See the ASTM standard for authoritative percent-passing tolerances.

How much do I need?

For permeable paver joints, plan on about ½ cubic yard per 200 sq ft of paver field (after sweeping). For a 2" leveling course over an open-graded base, plan on about 1.2 yd³ per 200 sq ft. Use the material calculator at the top of the page for custom dimensions, and round up 5–10% for spread loss and re-sweep.

How #89 compares to neighboring sizes

• #89 vs. #8: #8 is slightly larger (no #50-fines portion). #89 is the more common joint spec; #8 is the more common bedding spec.
• #89 vs. #57: #57 is the 1"-top sibling. Use #57 below #89 in a permeable system.
• #89 vs. stone dust: Stone dust (#10) has more fines and packs tight. #89 drains. They are not interchangeable for permeable installs.
• Residential equivalent: Same material as our Gray Crushed Rock ⅜" — two ways to ask for the same product.

Frequently asked questions

What is #89 stone used for?
Primarily three jobs: filling the joints on permeable interlocking pavers (PICP), the leveling course directly under permeable pavers, and small-stone drainage near foundations or septic systems. It is the spec'd choice when "#89 joint stone" appears on a plan.

Can I use #89 in regular pavers (non-permeable)?
For traditional pavers, use polymeric sand for joints and concrete sand for bedding. #89 is the right call for permeable systems only.

How does #89 differ from #8 stone?
#89 includes more of the fine-end material at the bottom of the band. #8 has a narrower, slightly larger band. Most PICP details accept either, but #89 is what most permeable spec sheets call out.

How much does a cubic yard of #89 stone weigh?
About 2,800 lbs per cubic yard, or roughly 1.4 tons.

Do you deliver #89 stone in the Boston area?
Yes — same-day and next-day bulk delivery across Suffolk, Middlesex, Norfolk, Essex, Plymouth, Bristol, and Barnstable Counties. No minimum order. Delivery is $100 per truckload within 30 miles of our Dispatch Office, then $4 per mile beyond; your exact price shows in the breakdown.

Same-day and next-day bulk delivery, no minimum order. We deliver #89 stone across Suffolk, Middlesex, Norfolk, Plymouth, Essex, Bristol, and Barnstable County.

Pair with our #57 Stone as the open-graded base layer below, or our Concrete Sand for traditional paver bedding.

Order today — the spec'd joint stone for permeable paver systems.

• 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. Delivery is $100 per load within 30 miles of our Dispatch Office, plus $4 per mile beyond. No minimum order.
• Job site delivery available
• Questions? Call (617) 645-0987 or see full delivery info →