Screenings for Patios in Transfer, PA

Pennsylvania Rock Supply handles gravel and aggregate delivery in Transfer, PA for two kinds of buyers. Contractors order 2A modified by the tri-axle load for driveways and pads, while homeowners want a few yards of screenings for a patio. Both are welcome, and both order the same way.

This part of Mercer County sits on glacial ground, so the material choices here follow the soil. Start with what the ground does, then pick the stone that fixes it.

Ground and Conditions in Transfer

Glacial deposits over shale, siltstone and sandstone define the ground around Transfer. Uplands carry stony till, and in many places a dense layer sits not far below the surface and drains slowly. Water perches above that layer from fall into late spring, so low spots, drives and footings stay wet.

A thin base shows it first. Under a paver patio or a gravel drive, a base that was spread too shallow works loose, pumps and settles at the edges. The wet ground below it never firms up, and the surface above it never stops moving.

The fix is more base, put down in lifts and compacted while the ground is dry. Base stone should not go down on frozen or muddy ground, so patio and driveway work waits for the ground to thaw and drain in spring and runs into fall.

Long, cold winters bring repeated freeze-thaw cycles, and wet soils above the dense till layer are prone to frost heave under a thin base. Frost depth here commonly runs 36 to 42 inches, set by each municipality.

Snowmelt and heavy rain also run off these slow-draining soils. That water scours roadside ditches, culvert outlets and gravel drives, and it cuts into stream banks in the valleys.

Materials for Transfer Projects

Patio and flatwork work starts with what goes under the pavers. In Pennsylvania that means Screenings, the fine crushed stone and chips under a quarter inch, sold locally as stone dust or #10 screenings. Screened and spread about an inch thick over a compacted base, screenings lock pavers and flagstone flat and stay put under foot traffic.

Under the screenings goes the base, and 2A modified is the standard Pennsylvania base stone for it. 2A modified, also called modified stone, is crushed stone with the fines left in, so it compacts hard and holds a patio or parking pad in place. It is the same material local yards call Crusher Run, and both are sold by the ton here.

Where water has to move instead of pack, switch to clean stone. 2B Stone, known locally as 2B or 3/4 inch clean stone, has no fines, so it drains and will not compact. It suits French drains, drainage behind retaining walls and shed pads in wet areas. 1B Stone is the smaller clean chip, about half an inch and down, for walkways and decorative topping.

Wet areas along the valleys also need armoring. RipRap is sold here by R-number, with R-4 rip rap for ditches and the larger R-5 rip rap for banks and streambanks.

Delivery to Transfer and the Surrounding Area

Bulk material is ordered online, and the first choice is quantity. You can buy by the ton or by the yard, depending on how you prefer to figure the job. The calculator on each product sizes the load for your project, so you order the amount you need rather than guessing.

Once the quantity is set, pick a delivery date at checkout. A dump truck brings the load to your site in Transfer and drops it where you want it. Pennsylvania Rock Supply delivers across Mercer County, including Hermitage, Sharon, Grove City, Greenville and Farrell.

Size Your Load and Place Your Order

Pick your material, enter your dimensions in the calculator, and choose the quantity that fits the job. From there, select a delivery date and Pennsylvania Rock Supply brings the load to your site in Transfer. Order online when you are ready.