21A Delivery for Fairfax, VA

Virginia Rock Supply handles gravel and aggregate delivery in Fairfax, VA, and most jobs here start with 21A. It is the standard Virginia driveway base. Fairfax ground is mostly clay-rich soil, so a base that locks together matters more than it does on sand.

Materials for Fairfax Projects

Fill and sub-base come first, because raising grade and building a pad is the first step on most Fairfax jobs. If your lot sits low, or the old surface has to come out before anything new goes down, the order starts with bulk fill and works up from there.

Start with Fill Dirt to build up a pad or bring a low corner of the yard to grade. It goes down first and gets compacted in lifts before any stone covers it. On top of that, 21A is the base that carries the load. Pack it in lifts of a few inches and it sets up almost like concrete.

Where you want a base that drains a little better, 21B is the coarser. It packs less tightly than 21A but sheds water faster, which helps on a shady drive or a pad that stays wet.

Then match the surface and the drainage to the job:

• Driveway Gravel for topping a compacted 21A base or resurfacing an existing drive.
• #57 Stone, about 3/4 inch, for French drains, driveway topping and concrete aggregate.
• Drain Rock for French drains, drywells and downspout runs.
• Screenings for paver and flagstone bedding and fine leveling under flatwork.
• Top Soil for lawn and bed prep once the hard work is finished.

Ground and Conditions in Fairfax

Fairfax sits in the Northern Virginia Piedmont, where the soil is mostly clay-rich and weathered from sandstone, siltstone and diabase. Clay takes in water slowly. Summer thunderstorms and the remnants of tropical systems run off fast, most of all where development has paved over the ground.

That runoff is why an under-built base fails here. Water reaches the subgrade, the clay softens, and a thin layer of stone pumps and rutts under load. Digging deeper and compacting in lifts takes more material up front, but it is what keeps a drive flat through a wet spring.

Sediment also washes off bare clay on building sites and slopes, and stream banks scour after heavy storms. Silt fence and a stone construction entrance are common on Fairfax sites for that reason, and #4 Crushed Stone is the usual pick for a heavy entrance or trench bottom.

Winter sets the schedule. Frost depth in Fairfax is 24 inches, and frequent swings above and below freezing mean freeze-thaw heave in gravel and base is a real factor. Frozen ground in midwinter and saturated clay after a thaw are what hold base and driveway work up.

Delivery to Fairfax and the Surrounding Area

Order online and pick your quantity by the ton or by the yard. If you know the square footage and the depth you want, you can size the load before you check out. A driveway base usually wants a solid layer compacted in lifts, and a pad under a shed or patio runs similar. Bulk delivery arrives as a dump load, so have the drop spot clear and reachable by a truck.

Fairfax is an independent city, not part of any county, and Virginia Rock Supply delivers bulk material across it and the surrounding area.

Order 21A and Fill for Your Fairfax Project

Most Fairfax jobs start the same way: fill dirt to raise grade, then 21A compacted in lifts to carry the load. Virginia Rock Supply delivers both, along with the stone, sand and topsoil that finish the work. Size your load online and place the order when your site is ready.