3/8 Clean for Patios in Usk, WA

Order gravel and aggregate delivery in Usk, WA online, by the ton or by the yard. Washington Rock Supply delivers bulk material across Pend Oreille County.

Start with 5/8 minus for a drive or pad. Then pick the bedding stone your flatwork sits on.

This is glaciated mountain country, so plan for a short working season.

Ground and Conditions in Usk

Thin stony soil over granite and metamorphic rock covers the ridges here. Till, outwash gravel and lake silt fill the valleys across the Okanogan Highlands and the northeast corner.

A thin base fails first at the edges. Pavers rock, joints open, and the surface pumps water instead of shedding it.

Snowmelt drives the water year in this part of the state. Most of it arrives as snow and leaves over a few weeks in spring.

That runoff saturates valley soils while the ground below is still frozen. Gravel valley floors drain quickly; till and lake silt do not.

Spring runoff also scours ditches, culverts and gravel roads during breakup. Streambanks cut, and bare burned slopes shed soil and rock.

Frost heave and soft spring ground govern any unbound base. Frost depth is 24 inches in Okanogan County, and the county or city building department sets the figure for your site.

Base, drive and paver work fits between the spring breakup and the autumn freeze. The window shortens the higher and further north the site sits.

Materials for Usk Projects

Bedding decides how flatwork performs. A bedding layer that compacts holds pavers steady; one that stays loose lets them move.

Crusher dust, also called 3/8 minus or screenings, is the standard setting bed under pavers and flagstone. It is a minus product, so it compacts rather than drains.

Use it for joint filling too. See Stone Screenings.

Where you want a washed, fines-free bed instead, use 3/8 clean. It also suits permeable paver joints and small drain runs.

See 3/8" Crushed Stone.

Under the bedding, build the structural course with 1 1/4 minus, also called CSBC or base course. It carries load and stays workable on soft wet ground.

See 1 1/4 Minus.

Top drives and pads with 5/8 minus, the Washington default surfacing course. The fines stay in, so it packs hard and sheds water.

See 5/8 Minus.

For drainage beside a slab or footing, use drain rock, also called 7/8 clean. It is washed with no fines, so it keeps its voids.

See Drain Rock.

Delivery to Usk and the Surrounding Area

Order online and choose your quantity by the ton or by the yard. Each product page has a calculator to size the load.

Pick a delivery date at checkout. A dump truck tips the material in one pile on site.

Washington Rock Supply delivers bulk material throughout Pend Oreille County. That includes Usk plus Newport, Ione, Metaline Falls and Cusick.

Plan your order around the season. Once breakup starts, soft ground can slow access to a site.

Order Bedding Stone and Base for Your Usk Project

Size your load with the calculator on each product page, then order by the ton or the yard. Washington Rock Supply delivers bulk gravel, stone, sand and soil across Pend Oreille County.

Choose your delivery date at checkout and the truck brings it to your site.