How much gravel do I need for my project?

Measure the area you are covering and the depth you want, then size the load with the calculator on the product page. You can order by the ton or by the yard. The calculator turns your measurements into an order quantity so the truck brings what the job needs. For a base, account for compaction when you set the depth.

What is the difference between crushed stone and Natural Pea Gravel?

Crushed stone is angular, with sharp edges that lock together and compact hard, which is why 2A modified and 2B hold a base or a drain. Natural Pea Gravel is rounded natural stone, so it stays loose underfoot and works better on walkways, play areas and drainage. Pick crushed stone for structure and Natural Pea Gravel for a walkable surface.

McKean County 2A Modified and Gravel Delivery, PA

Q: Do you deliver to McKean County?

Yes. Pennsylvania Rock Supply delivers bulk gravel, stone, sand, topsoil and mulch across McKean County, including Bradford, Kane, Port Allegany, Smethport, Lewis Run, Mount Jewett, Eldred, Rew, Cyclone, Derrick City, Duke Center, Gifford, Rixford and Turtlepoint. Order online, size the load, and pick a delivery date at checkout. A dump truck brings it to the site.

Rain and snowmelt run fast off the steep valley sides here, pushing concentrated flow into narrow valleys, roadside ditches, culverts and low drives. That water decides what you order. Pennsylvania Rock Supply delivers gravel, stone and aggregate in McKean County, PA, starting with 2A modified.

2A modified is the standard Pennsylvania base stone, crushed stone with the fines left in so it compacts hard. On this ground, a thin or poorly drained base breaks up fast, so the base and the drainage stone have to be right.

Delivery across McKean County

Order online and set your own quantity. Figure the load by the ton or the yard, size it with the calculator, then pick a delivery date at checkout. A dump truck brings the material to the site.

We deliver across the county, including Bradford, Kane, Port Allegany, Smethport, Lewis Run, Mount Jewett, Eldred, Rew, Cyclone, Derrick City, Duke Center, Gifford, Rixford and Turtlepoint. Put the driveway, pad or ditch on the order and the truck drops where the work is.

Materials delivered in McKean County

Here is what each material does on a McKean County job.

2A modified is the trade name for a 2A-type base with extra fines added. Treat these names as how material is specified and sold locally.

For a driveway, start with 2A modified and top it with Driveway Gravel once the base is compacted. For a patio, bed the pavers on screenings, and set a drain behind the wall on 2B or Drain Rock. For a walkway, lay Walkway Gravel or 3/8" Natural Pea Gravel over a compacted base.

Ground conditions across McKean County

Sandstone, siltstone, shale and conglomerate sit under thin to moderately deep, stony soils on the broad uplands and wide ridges. Deep, steep-sided valleys cut between them, and coal beds and old mine ground turn up in parts of the county. Expect variable ground under any base.

That drives three things. First, base depth: a thin base over soft, stony ground will not hold, so build the base to carry the load. Second, drainage: use clean stone such as 2B behind walls and in French drains so water has somewhere to go. Third, timing: winter snow and frozen ground limit base, driveway and paver work to the thawed, dry months from spring into fall. Base stone should not go down on frozen or muddy ground.

Cold winters bring repeated freeze-thaw cycles, and the higher ground runs cooler and wetter than most of the state, so a thin or poorly drained base breaks up. Frost depth runs commonly 36 to 42 inches, set by each municipality, with the deeper figures in the mountains.

Runoff off steep slopes gullies gravel roads, ditches and culvert outlets, and scours stream banks in the narrow valleys. Extreme rain or rain on snow can set off debris slides on the mountainsides. Armor those spots with rip rap and keep ditches and culvert outlets clear.

Choosing the right material

Ground next door is not the same as ground here. Elk County spans the Western Pennsylvania plateau hills and this same high plateau and Allegheny Mountains zone, so base and drainage choices track closely with McKean County, and the same compacted 2A modified base and clean drainage stone apply.

Warren and Potter counties share the high plateau and Allegheny Mountains zone but also reach into the glaciated northeast and northwest. That glaciated ground can drain differently, so check how water moves before you set a base depth or pick a drainage stone. In all three counties the projects are the same: driveways, pads, ditches and culvert outlets.

Match the stone to the job. Base and drive material: 2A modified. Drainage and wall backfill: 2B or #57. Bedding under pavers: screenings. Slope and stream protection: rip rap. Soil and finish: topsoil, garden soil or mulch.

Order 2A Modified for your McKean County job

2A modified is the base stone most McKean County work starts with, and it is the one to order first for driveways, pads and shed bases. Add clean stone for drainage and screenings for bedding as the job needs. Order online when you are ready and set your delivery date at checkout.

2A Modified, Sand and Gravel Delivery in McKean County, PA