By the Earthstone Materials Team · Last updated: September 27, 2026
The short answer: #57 stone is for drainage; limerock base is for driving and building on. #57 is clean, angular rock about the size of a large marble. It lets water pass straight through and never packs down. Limerock base is crushed limestone with fines mixed in, and those fines are the whole point: wet it, compact it, and it locks into a hard surface you can drive on. Use each one for the job it was made for and both perform for years. Swap them and both fail.
What #57 stone is
#57 stone is washed, angular crushed rock, roughly 3/4 inch to 1 inch in size. The washing matters: with dust and fines removed, water flows freely through the voids between stones. It does not compact, which is a feature in drains and a flaw under driveways. Common South Florida uses include French drains, drain fields, septic beds, pipe bedding, and the drainage layer behind retaining walls.
What limerock base is
FDOT limerock base is crushed Florida limestone graded from larger rock down to fine dust. The fines fill the gaps between the larger pieces, so when it is spread, watered, and rolled, it binds into a dense, hard layer. Our limerock base meets FDOT specifications, which is why road crews and site contractors use it under pavement. In residential work it is the standard base for driveways, parking pads, paver patios, and shed or equipment pads.
Side-by-side comparison
| #57 Stone | Limerock Base | |
|---|---|---|
| Job | Drainage; water passes through | Structural; compacts into a hard surface |
| Compaction | Does not compact | Compacts firmly when watered and rolled |
| Drainage | Excellent | Poor once compacted; sheds water |
| Driveway surface | No; stones migrate and rut | Yes; the standard South Florida base |
| French drains | Yes; the correct stone | No; fines clog the drain |
| Under pavers | No | Yes; 4 to 6 inches compacted |
The two classic mistakes
Mistake one: #57 as a driveway surface. Because it never locks together, tires push the stones aside and the driveway develops ruts within months. If you want the look of loose stone on a driveway, crusher run is the better pick: it has fines, so it compacts, while still reading as a stone surface.
Mistake two: limerock inside a drain. A French drain filled with limerock base slowly seals itself as fines wash into the voids. Within a season or two the drain barely flows. Drains get clean stone, always: #57 or drain rock.
How they work together
Many projects use both, in different layers. A typical South Florida driveway build: compacted limerock base as the structural layer, with #57 stone in a trench drain along the low edge to carry runoff away. A paver patio: limerock base compacted underneath, bedding sand above it, pavers on top. Each material does the one job it is good at.
Ordering notes
Both materials are sold by the cubic yard and delivered by dump truck. Limerock base is often ordered slightly heavy because compaction eats volume: a 4-inch compacted layer usually needs about 5 inches of loose material. #57 does not compact, so what you order is what stays. Estimate either with our material calculator, and if the project has both a drain and a driving surface, tell us when you request a quote so the loads arrive in the right order.