Fill and Base Material Delivered in Clayton, CA

Winter rain drives everything here. It soaks into sandy ground fast but sits on clay and runs off slopes. That runoff is why gravel and aggregate delivery in Clayton, CA starts with drainage and a base that holds. California Rock Supply stocks Class 2 base, the standard California base material, along with clean drain rock for the water that has to leave the site.

Order online, pick your quantity, and we deliver to your site in Clayton.

Delivery to Clayton and the Surrounding Area

Ordering runs through the site. Choose your material, pick a quantity by the ton or the yard, and set a delivery date at checkout. The calculator sizes the load if you are unsure.

A dump truck delivers to the site. Have the drop spot clear and reachable before the truck arrives. Bulk loads go to homes, job sites, and open lots across Clayton and the rest of Contra Costa County.

We also deliver to Concord, Richmond, Antioch, San Ramon, and Pittsburg.

Materials for Clayton Projects

Most jobs here start with grade. Lots that sit low, or pads that need building up before anything hard goes on top, need fill and sub-base first. Everything else waits on that.

Building a pad or raising grade

Start with Fill Dirt to raise the grade and backfill. Compact it in lifts, then cap it with Class 2 Base. Class 2 base is the compacted layer under pavers, slabs, and driveways. It locks up tight and stays put.

Recycled base rock and crushed miscellaneous base are the same idea made from Road Base or asphalt. Caltrans allows processed reclaimed asphalt and concrete in aggregate base, so they work the same way under a drive or a slab.

Driveways

Compact Class 2 base first, then surface with Driveway Gravel. On soft clay, the base is what keeps the surface from rutting.

Paths and patios

Lay Stone Screenings over a compacted base for paths and patios. It packs firm and fine. Add Walkway Gravel for a walkable surface.

Drains and winter runoff

Use 3/4" Drain Rock in French drains and drainage trenches. Clean stone, no fines, so water moves through it. Drain Rock handles drywells, downspout runs, and drainage behind retaining walls.

Arm slopes and creek banks with RipRap before the big storms arrive. Caltrans calls placed rock on slopes rock slope protection.

Ground and Conditions in Clayton

Soils change over short distances across this zone. Sandy ground sits along parts of the shoreline, but heavy clay is extensive in the Coast Range valleys and hills. Clayton sits in that clay country.

Clay cracks when dry and swells when wet. That movement is what breaks an under-built base. Compact in lifts and build the base thick enough to bridge the movement below it.

Most rain falls from late fall to spring, much of it in a few large winter storms and atmospheric rivers. It sits on clay and runs off slopes. Plan drainage before the wet season, not during it.

Hillside runoff and slides are the winter risk on steep slopes. Intense rain on recently burned slopes can move debris. Rip rap and drain rock are how you slow that water down and send it somewhere safe.

Late spring into fall is the main window for base, driveway, and paver work. Winter rain and saturated clay are what hold jobs up, so get the grade and base in while the ground is dry.

Order Class 2 Base for Your Clayton Project

Class 2 base is the material most Clayton jobs come down to. It is the compacted layer that makes a driveway, pad, or paver base last through wet winters and dry summers. Bring in fill dirt first if the grade needs raising. Choose your material, size the load with the calculator, and set your delivery date.