Montgomery County, PA Gravel and Landscape Rock Delivery
What base stone holds up under a Montgomery County driveway? 2A modified, the crushed stone with the fines left in so it compacts hard. Pennsylvania Rock Supply delivers gravel, stone and aggregate in Montgomery County, PA, and 2A modified is what most local drives, parking pads and shed bases start with.
This is mixed Piedmont ground. Uplands carry loamy soils weathered from schist and gneiss, lowlands run to red shale and sandstone, and limestone valleys weather to heavy clay.
Ground Conditions Across Montgomery County
Base work here runs from spring, once the ground has thawed and dried, into late fall. Base stone should not go down on frozen, soft or muddy ground, so timing a delivery matters as much as picking the stone.
Winters bring repeated freeze-thaw cycles. Even though frost does not reach as deep here as in most of the state, a thin or poorly drained base can heave and break up. Frost depth runs about 30 to 36 inches and is set by each municipality; the City of Philadelphia uses 30 inches.
Heavy summer storms and spring rain run off built-up ground, managed under municipal stormwater rules. Over limestone, runoff concentrated from roofs, gutters and drives can open sinkholes, so send that water somewhere it can spread out.
Storm runoff from paved and built-up ground also scours stream banks and washes out ditches, culvert outlets and sloped gravel drives. Armor those spots instead of patching them each year.
Materials Delivered in Montgomery County
2A modified is the standard Pennsylvania base stone, and it is the trade name for a 2A-type base with extra fines added. Order it for driveways, parking pads and shed or patio bases.
Local yards still use the older size names alongside those numbers: 2B for #57 and 1B for #8.
Choosing the Right Material
Start with the job, not the name. A drive or pad base calls for 2A modified. Anything that has to move water calls for clean stone such as 2B, #57 or #67, because fines block drainage.
Bedding and joints want a fine material: screenings under pavers and flagstone, washed sand under slabs, mason sand for mortar and joints. Lawns and beds finish with screened topsoil, garden soil or shredded mulch.
Ground next door shifts the choice. Philadelphia County sits in the same Southeastern Piedmont and Delaware River lowland zone, with the same mixed ground, so base and drainage choices there are similar and the difference is usually the project rather than the soil. Berks and Lehigh counties both span more than one zone, including the Great Valley and Ridge and Valley, so a steeper, rockier site may need more drainage stone and better slope protection than a flat Montgomery County pad.
Delivery Across Montgomery County
Order online and pick your delivery date at checkout. You choose the quantity by the ton or by the yard, and the calculator sizes the load if you are unsure how much the job takes.
A dump truck then delivers the material to your site and places the load where you want it dumped. Coverage runs across the county, including Abington, Cheltenham, Norristown, King of Prussia, Pottstown, Lansdale, Horsham, Willow Grove, Montgomeryville, Conshohocken, Bala Cynwyd, Harleysville, Ardmore and Hatboro.
Order Gravel and Stone for Your Montgomery County Project
Pennsylvania Rock Supply delivers 2A modified, clean drainage stone, sand, topsoil and decorative rock across Montgomery County. Order online, size the load with the calculator, and pick your delivery date at checkout. Place your order when you are ready.