Bulk Material Delivery in Lynnwood, WA

Washington Rock Supply handles gravel and aggregate delivery in Lynnwood, WA, and the material that answers this ground best is washed stone. Rain soaks the loose upper soil, hits the dense till below, and stops.

Water sits close to the surface all winter instead of draining away.

That is why drain rock and 5/8 minus do so much of the work on a Lynnwood lot. One moves water sideways.

The other packs hard and sheds it.

Materials for Lynnwood Projects

Start with the washed sizes. Water that perches on till has to be taken sideways to daylight, and only a fines-free stone keeps the voids open long enough to do it.

Drain Rock, also called 7/8 clean, is washed with no fines. Use it in footing drains, French drains, curtain drains and infiltration trenches where a perched water table sits on till.

3/4" Crushed Stone is the washed counterpart to a minus product. It drains instead of compacting, which suits trench backfill, pipe surround, drain fields and under-slab drainage.

#4 Crushed Stone, or drywell rock, is the coarse end of the washed range.

4 as the alternative for gravel backfill for drywells, which is the clearest local use for this size.

Downspout runs and splash pads want rounded stone rather than crushed. Washington River Rock files under round rock in Washington yards and armour a splash pad or a dry creek bed without locking together.

Then the compacting side. 5/8 Minus, the crushed surfacing top course known locally as CSTC, is crushed rock with the fines left in.

It packs hard and sheds water instead of soaking it up, which is what a driveway, parking pad or shed slab needs on top.

Below that sits 1 1/4 Minus, the crushed surfacing base course or CSBC. Larger top size and fewer fines than 5/8 minus, so it carries load and stays workable on soft wet ground.

For bedding and joints, Stone Screenings, or crusher dust, compacts rather than drains. It beds pavers and flagstone and fills joints.

Delivery to Lynnwood and the Surrounding Area

Order online and the load arrives on a dump truck that tips it in one pile on your site. You choose the quantity by the ton or by the yard, and each product page carries a calculator to size it.

Pick a delivery date at checkout. Coverage runs across Lynnwood and Snohomish County, including Everett, Marysville, Edmonds, Lake Stevens and Mukilteo.

Have the drop spot clear before the truck arrives. A pile of drain rock or 5/8 minus needs room to sit where it lands, and the truck tips rather than places.

Ground and Conditions in Lynnwood

Time the work around the wet season, which runs October through April. Under the state stormwater manual for western Washington, exposed soil must be stabilized within two days in that window against seven days in summer.

Base, paving and paver work belongs in the dry months. Winter work needs the grade kept covered, because saturation rather than frost is what softens a base here.

The ground is glacial, laid down by the Vashon ice sheet. A dense till cap, its lower part hard enough that crews call it hardpan, sits over advance outwash sand and, below that, the silt and clay of the Lawton beds.

Perched water is the practical result. Rain reaches the till and stops, so the water table sits close to the surface all winter.

Anything built on till needs the water taken sideways to daylight.

Winter rain perching where outwash sand meets clay below is what puts bluffs across the Puget Sound lowland on the landslide maps. The same perched water undercuts cut slopes and fill on a smaller scale.

Questions About Gravel in Lynnwood

Do you deliver 5/8 minus to Lynnwood, WA?

Yes. Washington Rock Supply delivers 5/8 minus across Lynnwood and the rest of Snohomish County, including Everett, Marysville, Edmonds, Lake Stevens and Mukilteo.

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

What gravel is best for a driveway in Lynnwood?

Use 1 1/4 Minus as the structural course and 5/8 Minus on top. The 1 1/4 minus, or CSBC, carries load and stays workable on soft wet ground.

The 5/8 minus, or CSTC, packs hard and sheds water. That pairing suits the dense till and perched water common on the Puget Sound lowland.

Order Bulk Gravel for Your Lynnwood Project

Washington Rock Supply delivers 5/8 minus, washed drain rock, round rock, sand and soil across Lynnwood and Snohomish County. If water sits on your ground all winter, start with the washed sizes and build the compacting courses on top.

Order online and a truck brings it to your site.