Bulk Aggregates for Patios in Bellingham, WA

If you are planning a patio, a paver walkway or a parking pad, gravel and aggregate delivery in Bellingham, WA starts with what goes under the flatwork. Washington Rock Supply sells bulk material by the ton and delivers it across Whatcom County.

For most of that work the base is 5/8 minus, the crushed surfacing top course that packs hard with the fines left in. The bedding layer above it is a different material, and getting that split right is what keeps a patio flat.

Ground and Conditions in Bellingham

Across the Puget Sound lowland the ground is glacial: a dense till cap over outwash sand, with silt and clay below. The lower till is hard enough that crews call it hardpan.

Water that soaks the loose upper soil reaches that cap and stops.

So the water table sits close to the surface all winter instead of draining away. A thin base over that ground shows the failure first, as ruts and soft spots that come back every wet season.

The fix is taking the water sideways to daylight. Footing drains, French drains and curtain drains do that work, and they need washed stone with no fines so the voids stay open.

That is why drain rock, also called 7/8 clean, belongs on any site sitting on till.

The wet season runs October through April. Under the state stormwater manual for western Washington, exposed soil has to be stabilized within two days in that window against seven days in summer.

Base, paving and paver work is best scheduled for the dry months.

Winters here are mild and wet, and the ground seldom freezes deep. It is saturation rather than frost that softens a base, so a drive that was firm in August can rut in February.

Where a jurisdiction publishes a frost depth, the building official sets the footing depth.

Materials for Bellingham Projects

Patios, walkways and shop slabs all rest on a bedding layer, and the choice of bedding decides how the surface behaves. A minus product compacts and locks; a clean, washed stone drains and stays loose.

Pick by what the surface needs underneath it.

5/8 Minus, also called crushed surfacing top course or CSTC, is the Washington default surfacing course. Crushed rock with the fines left in, it packs hard and sheds water instead of soaking it up.

Use it for driveways, parking pads and the base under a patio.

1 1/4 Minus, the crushed surfacing base course, is the structural course below a 5/8 minus top. Larger top size and fewer fines, so it carries load and stays workable on soft wet ground.

Stone Screenings, sold locally as crusher dust or 3/8 minus, is the classic setting bed for pavers and flagstone. It is a minus product, so it compacts rather than drains, which is what a bedding layer wants.

3/8" Crushed Stone is the washed, fines-free counterpart. It goes in paver joints, permeable paver setting beds and small drain runs where water has to move instead of sitting.

Walkway Gravel, or 1/4 minus, is the fine end of the minus range. It packs down tight underfoot for garden paths, side yards and firm walking surfaces.

Delivery to Bellingham and the Surrounding Area

You order online and choose a quantity by the ton or by the yard. Each product page has a calculator, so you can size the load before checkout and pick a delivery date there.

A dump truck tips the load in one pile on site. Bulk delivery covers Bellingham and the rest of Whatcom County, including Lynden, Ferndale, Blaine, Everson and Nooksack.

Order Bulk Aggregate for Your Bellingham Project

Work out your quantity with the calculator on the product page, then place the order online and choose a delivery date. Washington Rock Supply delivers 5/8 minus, drain rock, bedding stone and the rest of the bulk materials to job sites across Bellingham and Whatcom County.