Base Materials
We deliver every gradeSubbase
Subbase is the layer of rock that sits between the raw ground and your base gravel. It's usually a coarser, cheaper crushed stone or crushed concrete, with bigger pieces than what goes right under a driveway or slab. The job is to spread weight down into the dirt so the layers above it don't sink.
"Subbase" names a layer, not a specific rock. Around here it usually means larger crushed stone (about 1 1/2 inch and up) or crushed concrete broken down to a similar size. It runs cheaper per ton than washed decorative stone because the screen is rougher and it often includes fines. You order it when the soil under your project is soft and you need to build up thickness before you place base and pavement.
Compare every grade
| Grade | Size | Shape | Washed | Top use | We deliver |
|---|---|---|---|---|---|
| Subbase (3/4″ To 1.5″) | 3/4" To 1.5" | Angular | — | Road base | We deliver it |
| Subbase (Granular) | — | Angular | — | Road base | We deliver it |
What people use it for
How to choose within subbase
Under pavers or concrete
A crushed base — usually 3/4" minus — compacts to a solid, load-bearing pad. Uniform depth matters as much as the material.
Under a shed or hot tub
Compact 4 to 6 inches of base material. More for anything that will sit long-term.
Driveway base
Crushed limestone or road base underneath, topped with a decorative or wear layer.
Material calculator
How much subbase do you need?
Pick a grade, tell us your area and depth, and we'll work out the tons plus your delivered price.
Area shape
Dimensions
Depth
shed baseEnter your area to see the math
Pick a material, shape and dimensions and we'll calculate the tons you need plus your delivered price.
Other base materials families
Aggregate Base Course
We deliverAggregate base course, or ABC, is a dense-graded crushed stone mix.
Road Base
We deliverRoad base is crushed rock mixed with stone dust, sized from about 3/4 inch down to fines.
Top Course
We deliverTop course is the finish layer on a gravel driveway or road.
Base Materials Fill Material
We deliverFill material is loose dirt, sand, or crushed rock you dump to raise a low spot or plug a hole in the ground.
Base Materials Sand
We deliverSand is rock ground down into loose grains, usually between 0.075 mm and 4.75 mm across.
Base Materials 10 Stone
We deliver#10 stone is crushed rock screened to 3/8 inch and smaller, with all the fine dust left in.
Base Materials Gravel
We deliverBase gravel is crushed rock with all the dust and small chips left in.
Paver Base
We deliverPaver base is crushed rock that runs from about 3/4 inch down to a fine dust, all mixed together in one load.
Base Materials 4 Stone
We deliver#4 stone is crushed rock roughly 3/4 inch to 1 1/2 inches across, with the fines washed out.
Base Materials Crushed Stone
We deliverCrushed stone is rock broken down at a quarry and screened into sizes.
Base Materials 11 Stone
We deliver#11 stone is crushed rock screened from about 1/2 inch down to 1/4 inch, with most of the dust washed out.
Base Materials 2 Stone
We deliver#2 stone is crushed rock with pieces roughly 1.5 inches to 2.5 inches across.