Screenings for Patios in McKeesport, PA

Order gravel and aggregate delivery in McKeesport, PA online. Pick your material, pick your quantity, pick your delivery date. Pennsylvania Rock Supply drops bulk loads by the ton or yard.

Start with 2A modified for anything that carries weight. Around McKeesport, clay-rich ground on steep hillsides decides how the rest of the job goes.

Ground and Conditions in McKeesport

A thin base fails first. It pumps, shifts and ruts under a patio or drive, and the pavers above it move with it.

McKeesport sits on Western Pennsylvania plateau hills. The ground here is flat-lying shale, siltstone, sandstone, claystone and coal beds weathered into silty, clay-rich soils, cut by steep valleys. Many communities sit over old underground coal mines.

Clay that stays wet softens and heaves through repeated freeze-thaw cycles every winter. Frost depth runs about 36 inches, set by each municipality. A base that is too thin or holds water breaks up fast.

Water is the other half. Heavy rain and snowmelt run down steep hillsides, and water soaking into clay layers on slopes is the main landslide trigger. Where your roof and drive runoff goes matters on a hillside lot. Landslides and slumping on steep slopes are most common in and around the Pittsburgh region, along with stream bank scour and ditch washouts after heavy rain.

Time the work with the season. Base, driveway and paver work runs from spring, once the ground has thawed and dried, into late fall. Long wet spells and rain on snow are when hillside ground is most likely to move.

Materials for McKeesport Projects

Patios and flatwork live or fall on the bedding layer. Get that right and the surface stays flat.

Screenings, also called stone dust or #10 screenings, are the standard bedding under pavers and flagstone. The fine crushed stone and chips under a quarter inch pack firm and hold a screeded line. Use them for walkway surfacing and pipe bedding too.

Under the bedding goes the base. 2A modified, also called modified stone, is the standard Pennsylvania base stone: crushed stone with the fines left in so it compacts hard. It carries driveways, parking pads, shed and patio bases. Buyers here ask for 2A modified by name, and it does the same job as crusher run.

Where water has to move, switch to clean stone. 2B stone, the 3/4 inch clean stone, has no fines, so water passes through and it never packs hard. Use it in French drains, behind retaining walls and under shed pads on wet ground.

Set the small stuff on top. 1B stone, about half an inch and down, tops walkways and decorative beds. 3/8" Natural Pea Gravel stays loose underfoot, which suits paths and play areas.

Finish the grade with Top Soil or Garden Soil around the edges, and hold moisture in beds with Shredded Mulch.

Delivery to McKeesport and the Surrounding Area

Decide tons or yards first. Sold by the ton, the load is weighed. Sold by the yard, it is measured by volume. Either way, size the load with the calculator before you check out.

Enter your project area and depth, and the calculator returns the quantity you need. No guessing at the pile size, no second run for a short load.

Then place the order online. Choose your material, your quantity and a delivery date at checkout. A dump truck brings the load to your site in McKeesport, in Allegheny County, and the driver tips it where you want it. We also deliver to Pittsburgh, Bethel Park, Monroeville, Allison Park and West Mifflin.

Questions McKeesport Buyers Ask

What gravel is best for a driveway in McKeesport?

2A modified is the base for most drives here. It compacts hard because the fines stay in, which suits clay-rich ground that softens when wet. Top it with driveway gravel or 1B stone for a cleaner surface. On wet ground, put 2B stone underneath so water drains instead of sitting in the base.

How much material will my project need?

Use the calculator. Enter the area you are covering and the depth you want, and it returns the quantity in tons or yards. That works for a patio bedding layer, a driveway base or a topsoil grade. Order that number and the truck brings it in one load.

Size the Load, Then Order

Run your numbers through the calculator and order the material for your McKeesport project. Screenings, 2A modified, 2B stone and topsoil all go out by the ton or yard, delivered to your site. Pick a delivery date at checkout and Pennsylvania Rock Supply handles the rest.