1 1/4 Minus and Bulk Aggregates for Mossyrock, WA

Washington Rock Supply handles gravel and aggregate delivery in Mossyrock, WA, by the ton or the yard. Start with 5/8 minus, the crushed surfacing top course this market builds drives and pads from.

Across the Lower Columbia, Chehalis valley and the Willapa Hills, fine terrace and hill soils hold water instead of shedding it. That makes washed stone the answer for footing drains, French drains, drywells and downspout runs.

Materials for Mossyrock Projects

Water is the design problem here. Silt-heavy ground keeps a perched water table close to the surface, so drainage stone has to stay open instead of packing tight.

Washed stone carries no fines. It keeps its voids, which is what you want in a trench or a drywell.

Coarse drainage and armour stone

Drain Rock, also called 7/8 clean, is washed rock for footing drains, French drains, curtain drains and infiltration trenches. No fines means the voids stay open where water sits on till.

RipRap protects shorelines, streambanks, culvert outfalls and cut slopes.

Large River Rock is the 2 to 8 inch round stone for swale and ditch armour, bank toes and culvert outfalls. Rounded stone of that size stays put when a winter storm moves water fast.

Mid sizes for trenches and backfill

3/4" Crushed Stone, or 3/4 clean, 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.

#57 Stone is the 3/4 inch clean crushed rock used for drainage, trench backfill and concrete aggregate.

#4 Crushed Stone, or drywell rock, is the coarse clean stone for drywells and heavy drainage.

4 as the alternative for gravel backfill for drywells.

Fine sizes that compact

5/8 Minus, the crushed surfacing top course, is crushed rock with the fines left in. It packs hard and sheds water rather than soaking it up, so it surfaces driveways, parking pads and shed or shop slabs.

1 1/4 Minus, the crushed surfacing base course, is the structural course under a drive, parking area or slab. Its larger top size and fewer fines carry load and stay workable on soft wet ground.

Stone Screenings, or crusher dust, is a minus product that compacts rather than drains. Use it for paver and flagstone bedding, joint filling and setting beds.

Delivery to Mossyrock and the Surrounding Area

Order online and pick a delivery date at checkout. Quantities are ordered by the ton or by the yard, and each product page has a calculator to size the load.

A dump truck tips the load in one pile on site. Mossyrock sits in Lewis County, and delivery covers the town and the surrounding area, including Centralia, Chehalis, Winlock, Morton and Vader.

Ground and Conditions in Mossyrock

The working season runs October to April, and exposed unworked soil is limited to two days. Plan deliveries around the rain rather than against it.

Ground that softens in this part of the state softens because it is full of water, not because it froze. Pads and drives need a free-draining course under them so the base stays firm.

Erosion follows long rain: shallow slides in weathered hill soils, riverbank scour and channel movement, and sediment washing off cleared ground. Armour stone at outfalls and ditch lines holds that water where you want it.

Order Aggregate Delivery in Mossyrock

Washington Rock Supply delivers bulk gravel, washed stone, sand and soil across Mossyrock and Lewis County. Choose your material, set the quantity by the ton or the yard, and pick a delivery date at checkout.

Order online when your site is ready.