Order Gravel, Stone and Soil in Snohomish, WA

Washington Rock Supply handles gravel and aggregate delivery in Snohomish, WA. The local default surfacing course here is 5/8 minus, also called crushed surfacing top course.

It is crushed rock with the fines left in, so it packs hard and sheds water instead of soaking it up. That matters on ground where rain sits close to the surface all winter.

Delivery to Snohomish and the Surrounding Area

You order online, choose a quantity by the ton or by the yard, and pick a delivery date at checkout. A dump truck then tips the load on your site as one pile.

Each product page has a calculator if you need to size the load. Bulk delivery reaches Snohomish and the rest of Snohomish County, including Everett, Marysville, Edmonds, Lynnwood and Lake Stevens.

Have the drop area clear and reachable before the truck arrives. The driver tips the pile and leaves; nothing is placed or spread on site.

Materials for Snohomish Projects

Raising grade and building up a pad is the work that sets up everything else on a site. Fill and sub-base go down first, and the granular courses sit on top of them.

For raising a low spot or backfilling over an over-excavation, start with Fill Dirt. It brings grade up before any structural layer goes down.

Above that, 1 1/4 Minus is the structural course for a drive, parking area or slab. It is also called crushed surfacing base course.

Larger top size and fewer fines than 5/8 minus, so it carries load and stays workable on soft wet ground.

Top a drive or parking pad with 5/8 Minus. It packs into a firm surface that sheds water rather than holding it.

For a patio or a walkway, bed the pavers in Stone Screenings, also called crusher dust or 3/8 minus. It compacts rather than drains, which is what a setting bed needs.

Where water has to move instead of sit, use washed stone. Drain Rock, also called 7/8 clean, keeps its voids for footing drains and French drains.

Ground and Conditions in Snohomish

The Puget Sound lowland sits on glacial ground left by the Vashon ice sheet. A dense till cap covers the site, and its lower part is hard enough that crews call it hardpan.

Below that is advance outwash sand and, deeper still, the silt and clay of the Lawton beds. Rain soaks the loose upper soil, reaches the dense till and stops.

The water table then sits close to the surface all winter instead of draining away. Anything built on till needs that water taken sideways to daylight, which is why footing drains and washed drain rock do so much of the work here.

An under-built base is what fails on this ground. Saturation, not frost, is what softens a drive, so a surface that was firm in August can rut in February.

The wet season runs October through April. In that window, exposed soil has to be stabilized within two days, against seven days in summer.

Base, paving and paver work is scheduled for the dry months. Winter work needs the grade kept covered.

Order 5/8 Minus and More for Your Snohomish Site

5/8 minus is the surfacing course most Snohomish drives and pads are finished with, and 1 1/4 Minus is the structural course underneath it. Fill dirt, drain rock and bedding stone round out the order.

Choose your quantity online and have it delivered to your site.