Bulk Aggregates for Patios in Milton, WA

Planning a patio, a paver walkway or a driveway pad? Washington Rock Supply handles gravel and aggregate delivery in Milton, WA, and the material under the pavers matters as much as the pavers.

Start with 5/8 minus, the crushed surfacing top course local crews call CSTC.

This is glacial ground. A dense till cap sits close under the topsoil, so water perches instead of draining away.

Ground and Conditions in Milton

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

A thin base over that cap shows its failure fast.

Rain soaks the loose upper soil, hits the till and stops. The water table then sits close to the surface all winter.

A patio or paver walk laid on too little base rocks and settles as that water works under it.

The fix is a base that carries load and a drainage layer that moves water sideways. On soft wet ground, 1 1/4 minus, also called crushed surfacing base course or CSBC, goes down first.

It has a larger top size and fewer fines, so it stays workable.

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

Schedule base and paver work for the dry months, and keep the grade covered in winter.

Materials for Milton Projects

Bedding is where a patio or flatwork job is won. The material directly under the pavers has to compact hard and hold its shape, or the surface moves.

Crusher dust, also called 3/8 minus, screenings or quarry dust, is the bedding for pavers and flagstone. It is a minus product, so it compacts rather than drains.

Stone Screenings is the listing.

Where you want a washed, fines-free stone instead, use 3/8 clean. It suits permeable paver setting beds and paver joints.

See 3/8" Crushed Stone.

Under the bedding, 5/8 minus is the Washington default surfacing course. 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 or shop slabs. 5/8 Minus is the product.

For a structural course below that, 1 1/4 minus carries load on soft ground. 1 1/4 Minus is listed under that name.

Drainage is the other half of a flatwork job. Drain rock, also called 7/8 clean or washed rock, has no fines, so it keeps its voids where perched water sits on till.

It goes in footing drains, French drains and infiltration trenches. Drain Rock covers those runs.

For a firm walking surface beside the patio, 1/4 minus, or pathway gravel, is the fine end of the minus range and packs down tight underfoot. Walkway Gravel is the listing.

Delivery to Milton and the Surrounding Area

Order online and pick your quantity by the ton or by the yard. Each product page has a calculator if you want to size the load before checkout, then choose a delivery date.

A dump truck tips the material in one pile at the site.

Washington Rock Supply delivers bulk material across Washington. Milton sits in Pierce County, and delivery reaches Tacoma, Lakewood, Puyallup, Graham and University Place as well.

Get Your Milton Project Sized and Ordered

Start on the product page for the material your job calls for, then use the calculator to set your quantity. Order online by the ton or the yard, pick a delivery date, and Washington Rock Supply will tip the load at your Milton site.