Screenings for Patios in Presto, PA

Pennsylvania Rock Supply handles gravel and aggregate delivery in Presto, PA for two kinds of buyers: contractors running patios and driveways on tight schedules, and homeowners building one project right. Both usually start with 2A modified, the crushed stone with the fines left in that compacts hard under a base. On Presto ground, that base is only half the job.

Hilly terrain cut by steep valleys leaves silty, clay-rich soil here, and water soaking into clay on a slope is what softens a patio edge or heaves a walkway.

Ground and Conditions in Presto

A thin base shows itself fast on this ground. You get ruts in the stone, pavers that rock at the corners, and low spots that hold water after every storm. Freeze-thaw does the rest, since clay that stays wet softens and heaves.

The cause is usually drainage, not stone quality. Roof and drive runoff has to go somewhere, and on a hillside lot it often goes straight into the patio excavation. Send that water away from the flatwork first, then build the base.

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, so timing matters as much as material.

Materials for Presto Projects

Patio and flatwork bedding is where most Presto projects begin, and it sets what the surface does years later. Bedding is what levels the pavers and carries load between them, so it has to pack firm and drain.

Screenings, also called stone dust, are the standard bedding under pavers and flagstone. Fine crushed stone under a quarter inch, they pack to a firm, dead-flat surface. For pipe bedding and tighter joints, the same material works.

Under the bedding, the base layer is what stops movement. 2A modified is the Pennsylvania base stone, crushed stone with the fines left in, and it compacts hard under patios, driveways and shed pads.

Where water needs to move rather than sit, use clean stone instead. 2B stone is washed 3/4 inch stone with no fines, so it drains and will not pack hard. It suits French drains, retaining wall backfill and patios on wet ground.

For decorative beds and dry creek beds, river rock and large river rock handle borders and heavier erosion work. Washed sand beds and levels under slabs and pavers where a finer surface is wanted.

Delivery to Presto and the Surrounding Area

You order online and choose your quantity by the ton or by the yard. Bulk material is sold by weight or volume, and the two are not the same figure, so pick the unit you mean before checkout.

If you are unsure how much your project needs, size the load with the calculator rather than guessing. Enter your dimensions and it returns a quantity you can order directly.

Pick your delivery date at checkout, and a dump truck brings the load to your site in Presto. Where the truck can set the pile matters on a hillside lot, so plan the drop point before the day.

Pennsylvania Rock Supply delivers across Allegheny County, including Pittsburgh, Bethel Park, Monroeville, Allison Park and West Mifflin.

Questions from Presto Buyers

What gravel is best for a driveway in Presto?

Start with 2A modified as the base, since the fines let it compact hard and carry weight. Top it with driveway gravel if you want a fresh wearing surface. On wet or sloping ground, many Presto buyers put 2B stone underneath for drainage before the base goes down.

How much material will my project need?

It depends on the area you are covering and how deep the layer runs. Rather than working it out by hand, use the calculator on the product page. Enter your dimensions, and it returns a quantity you can order by the ton or yard.

Plan Your Presto Project

Bedding and base are the two layers that decide how a patio, walkway or drive holds up on Presto ground. Size the load with the calculator, choose the material that fits the job, and set your delivery date at checkout. Pennsylvania Rock Supply delivers bulk aggregate across Allegheny County, and you can place your order online whenever your site is ready.