5/8 Minus, Stone and Soil Delivery in Lopez Island, WA

If you are pricing gravel and aggregate delivery in Lopez Island, WA, the first question is usually whether the stone you need packs or drains. Washington Rock Supply sells both by the ton, and 5/8 minus is the surfacing course most local drives and pads are finished with.

Winter water sits close to the surface across the Puget Sound lowland, so washed stone does as much work here as any compacting material. This page covers what to order for which job on Lopez Island.

Materials for Lopez Island Projects

Start with the drainage side, because that is where a lot of island work begins. Drain rock, also called 7/8 clean or washed rock, has no fines left in it.

That keeps its voids open where perched water sits on dense till all winter.

Drain Rock goes into footing drains, French drains, curtain drains and infiltration trenches. A drywell wants a coarser open stone, and #4 Crushed Stone is the size for that job.

Downspout runs and pipe surround want a washed stone that stays open instead of sealing up. 3/4" Crushed Stone and #57 Stone both work, and the finer 3/8" Crushed Stone suits small runs and paver joints.

For the load-bearing side, 1 1/4 minus is the structural base course, specified locally as CSBC, and it goes under a 5/8 minus top course. 1 1/4 Minus carries load and stays workable on soft, wet ground.

5/8 Minus, the crushed surfacing top course, keeps its fines, so it packs hard and sheds water instead of soaking it up. That makes it the finish course for drives, parking pads and shed slabs.

Long rural approaches and equipment parking usually take Driveway Gravel, sold as a blend. Where a path only needs a firm surface underfoot, Walkway Gravel is the fine end of the minus range.

Ground and Conditions in Lopez Island

The working season frames the order. Across the Puget Sound lowland the wet season runs from October through April, and exposed soil has to be stabilized within two days in that window under the state stormwater manual for western Washington.

Base, paving and paver work gets scheduled for the dry months. Saturation, not frost, is what softens a base in this part of the state, so a drive that was firm in August can rut in February.

The ground is glacial, left by the Vashon ice sheet: a dense till cap over sand, with silt and clay below. Rain soaks the loose upper soil, hits the till and stops.

That perched water is why anything built on till needs the water taken sideways to daylight. Footing drains, French drains and washed drain rock do most of that work.

The same perched water undercuts cut slopes and fill on a smaller scale.

Delivery to Lopez Island and the Surrounding Area

You order online, choose a quantity by the ton or by the yard, and pick a delivery date at checkout. Each product page has a calculator if you want help sizing the load.

A dump truck tips the material on site in one pile. Delivery covers Lopez Island and the rest of San Juan County, including Friday Harbor, Blakely Island, Eastsound and Olga.

Choose your date with the ground in mind. If the grade is exposed in the wet months, plan for the pile to land when you can work it.

Order Aggregate Delivery in Lopez Island

Washington Rock Supply delivers 5/8 minus, washed drain rock, sand, topsoil and decorative stone across Lopez Island and San Juan County. Pick the material for the job, choose your quantity by the ton or the yard, and set a delivery date at checkout.

Place your order online when you are ready.