Specialty Products

Surface Treating Stone

Surface treating stone is clean, angular crushed rock made for chip sealing roads and driveways. The pieces get washed to strip off dust so hot asphalt can grab each stone. Sizes are small and uniform, usually between 1/2 inch and 1/8 inch, so a single layer sits flat on top of the binder.

You'll see it graded by number like #7, #8, or #89 from the ASTM D448 sieve chart. That number only tells you size. The rock itself might be limestone, granite, or trap rock depending on what's local. Contractors spread it over a fresh coat of asphalt emulsion on driveways, county roads, and parking lots, then roll it in to lock the surface.

named grade in this family

What people use it for

Chip seal (tar and chip) drivewaysBituminous surface treatments on county and rural roadsCape seals over existing pavementTop-dressing parking lots after an emulsion coatFog seal cover aggregate

How to choose within surface treating stone

Ask before you order

These aren't catalog items. Confirm size, color, and delivery window with the yard before you commit — every load runs differently.

Match the job to the stone

Flagstone, boulders, ballast, glass gravel — each has one right job. Get the job clear first, then the stone follows.

Lead time is longer

A specialty order usually ships slower than a #57 pallet. Plan the delivery date around the material, not the other way around.

All surface treating stone grades

Surface Treating Stone (3/8″)

Deburring metal partsSmoothing surfacesEdge rounding

3/8"

Other specialty products families

Aglime

Reference

Aglime is limestone that's been crushed and ground into a fine powder or grit.

10 grades→

Sand Blend

Reference

Sand blend is sand mixed with something else to hit a specific job.

7 grades→

Squeegee

Reference

Squeegee is fine crushed rock chips, roughly 1/4 inch and smaller, with the stone dust left in.

4 grades→

Anti Skid Stone

Reference

Anti-skid stone is a small, angular crushed rock you spread on icy roads, driveways, and walkways so tires and shoes can grip.

3 grades→

Grit

Reference

Grit is small, angular crushed stone, usually granite or quartz.

2 grades→

3 Stone

Reference

#3 stone is large crushed rock, roughly 1 1/2 to 2 inches across the biggest pieces.

1 grade→

Agstone

Reference

Agstone is finely crushed limestone that farmers spread on fields to raise soil pH.

1 grade→

Asphalt Mix

Reference

Asphalt mix is crushed rock and sand held together by hot liquid asphalt cement.

1 grade→

Ball Clay

Reference

Ball clay is a fine-grained sedimentary clay that's mostly kaolinite, with some mica and quartz mixed in.

1 grade→

Cold Patch

Reference

Cold patch is bagged asphalt you can shovel into a pothole without a hot mix truck.

1 grade→

Field Soil

Reference

Field soil is native dirt scraped and screened straight from open farmland or unused acreage.

1 grade→

Horse Bedding

Reference

Horse bedding is the loose material you spread across a stall floor so a horse has a soft, dry place to stand and lie down.

1 grade→

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