Stone
Roof ballast, construction entrances, heavy drainage and erosion control.
The largest stone we run by the yard. Too big to walk on comfortably, which is exactly the point. It stays where it is put, does not migrate under traffic, and lets water through at a rate nothing smaller matches.
Standard for ballasted flat roofs, construction site entrances that keep mud off the road, and any drainage run that has to move serious volume. Also used along seawalls and slopes where smaller stone would wash out.
Specification
Common uses
How much to order
One cubic yard is 27 cubic feet. How far that goes depends entirely on how deep you are laying it.
| Depth | 1 cu yd covers | Yards per 500 sq ft |
|---|---|---|
| 2 in | 162 sq ft | 3.1 cu yd |
| 3 in | 108 sq ft | 4.6 cu yd |
| 4 in | 81 sq ft | 6.2 cu yd |
| 6 in | 54 sq ft | 9.3 cu yd |
| 12 in | 27 sq ft | 18.6 cu yd |
The arithmetic: length times width times depth, all in feet, divided by 27. A 40 by 20 ft area at 4 inches deep is 40 × 20 × 0.333 ÷ 27, which is about 9.9 cubic yards, so you order 10. Round up rather than down — coming up two yards short on a Friday costs a whole extra delivery.
#4 Ballast Rock — common questions
The largest stone we run by the yard. Too big to walk on comfortably, which is exactly the point. It stays where it is put, does not migrate under traffic, and lets water through at a rate nothing smaller matches.
Roof ballast, construction entrances, heavy drainage and erosion control. Standard for ballasted flat roofs, construction site entrances that keep mud off the road, and any drainage run that has to move serious volume. Also used along seawalls and slopes where smaller stone would wash out.
Multiply length by width by depth, all in feet, and divide by 27 to get cubic yards. One cubic yard covers 162 sq ft at 2 inches, 108 sq ft at 3 inches, 81 sq ft at 4 inches or 54 sq ft at 6 inches. The calculator does it for you and converts to tons and truckloads.
No. #4 Ballast Rock is placed loose rather than compacted, so what you order is what you end up with. Order your plan volume, rounded up to the next whole cubic yard.
$37.50 per cubic yard, plus a flat $200 delivery per order across Palm Beach, Broward and Miami-Dade. Minimum order is one cubic yard.
About 1.35 tons per cubic yard. A tri-axle carries roughly 18 cubic yards or 22 tons, whichever it reaches first, so a full load of #4 Ballast Rock is about 16.3 cubic yards.
We deliver anywhere from West Palm Beach to Miami — Palm Beach, Broward and Miami-Dade counties. See the service area for lead times by county.
Where we deliver #4 Ballast Rock
Related materials
Pick your material, enter how many cubic yards and see the delivered number before you talk to anyone.