3/8 Clean for Patios in Deer Park, WA

Washington Rock Supply handles gravel and aggregate delivery in Deer Park, WA, from 5/8 minus for driveways and shop pads to washed sand and bedding stone for flatwork. The ground here is open and gravelly, so it drains fast and moves water down rather than holding it.

That cuts both ways: a patio or walkway needs a bedding layer that stays put, and the wrong stone under pavers is where a flat surface starts to rock and dip.

Ground and Conditions in Deer Park

Across the Spokane and the Selkirk foothills, the ground runs to cobbles, gravel and sand left by the Ice Age floods, with granite and basalt outcrops on the hills and a thin loess cap over it.

Where that gravel stays open, water moves through quickly and a thin base can still perform. Where fill has been compacted or a shallow basalt shelf sits close to the surface, water has nowhere to go and the wet spots show up.

On a patio or walkway, a base that is too thin or too wet shows up as settled corners, rocking slabs and joints that open after a winter of freeze and thaw.

Cold winters here freeze the ground to depth and give it a real spring thaw, and repeated cycles work on any unbound surface that was not built to take it.

Spokane County sets footing depth well below the figure used on the west side for that reason, though no frost figure belongs to Deer Park itself.

Materials for Deer Park Projects

Bedding and base under pavers and flatwork is where the material choice decides how the surface wears. The bedding layer has to compact tight and hold its grade, and the base below it has to carry load without pumping when the ground is soft.

For that top course, 5/8 minus (also called crushed surfacing top course, or CSTC) is the Washington default. The crusher fines are left in, so it packs hard and sheds water instead of soaking it up.

It works for driveways, parking pads and shed and shop slabs, and it also acts as a firm surface under a paver bed. See 5/8 Minus.

Below it, 1 1/4 minus (crushed surfacing base course, or CSBC) carries the structural load. The larger top size and fewer fines keep it workable on soft, wet ground under a drive, parking area or slab.

See 1 1/4 Minus.

For the setting bed itself, crusher dust (also called 3/8 minus or screenings) is a minus product, so it compacts rather than drains. It beds pavers and flagstone and fills joints.

See Stone Screenings.

Where you want a washed, fines-free stone instead, 3/8 clean drains where a minus would hold water. It suits paver joints, permeable paver bedding and small drain runs.

See 3/8" Crushed Stone.

For paths and side yards, 1/4 minus packs down tight underfoot. Washed sand takes the silt out for concrete mixes, paver setting beds and pipe bedding, which matters on a site working through the wet season.

Delivery to Deer Park and the Surrounding Area

Ordering is done online. You choose a quantity by the ton or by the yard, and each product page has a calculator for sizing the load.

Pick a delivery date at checkout and a dump truck tips the material on site.

Deer Park sits in Spokane County, and delivery also reaches Spokane, Cheney, Liberty Lake, Airway Heights and Mead. Bulk loads are sized to the project, so the quantity you order is the quantity that arrives.

Order Bedding and Base Material for Deer Park

Work out your quantity with the calculator on the product page, then place the order online with the delivery date that suits your build. Washington Rock Supply delivers bulk gravel, stone, sand and soil across Deer Park and the surrounding county.