Bulk Aggregate Delivery Across Montgomery County, MD
Start with the math, then pick the material. Figure the square footage, the depth, and the tons, and most driveway, drainage and paver jobs sort themselves out fast. Maryland Rock Supply sells bulk gravel, stone and aggregate delivery in Montgomery County, MD, and CR-6 is the base most local jobs call for.
Order online, and the load lands at your site by the ton or the yard. Our ground across the county is loam, silt loam and clay loam full of mica and rock fragments, so what you put down and how deep you put it matters more than it does on flat sand.
Materials delivered in Montgomery County
We break the yard down by size, coarsest to finest, so you can match the stone to the job. Here is how the main materials get used around here.
CR-6: the Maryland base material
CR-6 is the designation Maryland yards use for dense-graded driveway and road base. It is crushed stone blended down to dust, and it compacts into a hard, locked surface.
Order CR-6 for driveways, parking pads, shed bases and paver sub-base. A walking path can take a thinner layer, while drives and pads want a deeper base. Wet it and run a plate or roller over it in lifts for the tightest finish.
Drainage and decorative stone
Washed stone is sold by number here. Use #57 Stone for French drains and driveway topping, and step down to #8 Crushed Stone for paver joints and fine drainage. River Rock and Large River Rock cover decorative beds, borders and dry creek beds.
Sand, soil and mulch
Washed Sand beds and levels under pavers and slabs, and mixes into concrete. Top Soil rebuilds grade for lawns and beds, Fill Dirt raises grade and backfills, and Shredded Mulch holds moisture through our hot, humid summers.
Ground conditions across Montgomery County
Timing drives the schedule here. Base, driveway and paver work runs spring through late fall. Mid-winter freezes and wet spells stop compaction for shorter stretches than in Western Maryland, so plan the pour and the base lift around the thaw.
Our soil is loam, silt loam and clay loam weathered from schist and gneiss, often flaky with mica and carrying rock fragments, across rolling hills and stream valleys. Saturated silt turns soft and refuses to compact, so a drive needs a crown, a ditch or a drain where water collects.
Rolling slopes shed storm runoff fast toward the stream valleys. That scours banks after summer thunderstorms and tropical storm rain, and it washes soil off bare, sloping ground during grading. RipRap and a drainage layer earn their keep on those slopes.
Winter freeze-thaw cycles heave and rut drives built on a thin base or on wet, silty soil. Frost depth runs 30 inches in most county codes across this zone, so build the base deep enough to ride out a heave.
Delivery across Montgomery County
Order online and choose your load by the ton or the yard. Measure the area, set the depth, and the calculator does the rest, so you are not guessing at a pile.
Bulk delivery drops the material where the work is, from Germantown, Gaithersburg, Rockville and Silver Spring to Bethesda, Potomac, Olney, Clarksburg, Damascus, Poolesville, Burtonsville, Takoma Park, Chevy Chase and Montgomery Village.
Give us a clear drop spot and room for the truck to turn. Lead time depends on the material and the season, and spring fills up first, so build a cushion into your schedule before a base pour.
Choosing the right material
Ground changes as you cross county lines, and so does the right base. Prince George's County sits in the Western Shore Coastal Plain, where unconsolidated sand, silt, clay and gravel replace weathered bedrock. Top Soil up high drains well; low clay spots do not. There, drainage layers and a deeper base do more work than they do on our compacting silt loam.
Frederick County spans the Hagerstown and Frederick valleys plus the Central Maryland Piedmont. Where it meets our zone the ground is similar, so compare typical projects instead: long rural drives and agricultural pads rather than tight suburban lots.
Howard County shares our Central Maryland Piedmont zone, so the ground is similar and the material list is nearly the same. The difference is project mix, with more paver work and drainage tied to tighter lots.
Questions we hear in Montgomery County
What is the best base material for a patio in Montgomery County?
CR-6 is the standard pick. It is dense-graded crushed stone blended down to dust, and it compacts into a firm, flat pad that will not shift under a patio. Excavate, compact the subgrade, then place CR-6 in lifts and compact each one. Finish with a thin bedding layer of stone dust or washed sand so the pavers sit level.
Can I order material for a commercial or contractor job?
Yes. Maryland Rock Supply sells bulk aggregate by the ton or the yard to contractors and commercial buyers, not just homeowners. Order online, size the load to the job, and we deliver to the site across Montgomery County. Larger jobs and repeat orders are routine for us. Give us a clear drop spot and room for the truck.
When is the best time of year to order base material in Montgomery County?
Spring through late fall is the working window. Base, driveway and paver work needs compaction, and compacted stone holds best in mild, workable weather. Mid-winter freezes and wet spells stop compaction for shorter stretches than in Western Maryland, but they still stall a pour. Order before the spring rush so your base goes down on schedule.
Order bulk gravel and stone in Montgomery County
Maryland Rock Supply delivers bulk gravel, stone, sand, topsoil and aggregate across Montgomery County, from Germantown and Gaithersburg to Silver Spring, Bethesda and Poolesville. Work out your tonnage, pick the material, and place the order online. We will get the load to your site.