What Type of Gravel Do I Need for My Driveway?

The house is built. The utilities are run. It’s time for the finishing touches, like the perfect driveway to welcome family and friends alike.

Let’s Talk Gravel

Why do people choose a gravel driveway when asphalt and concrete options are available? While it may not be as pretty, this option is a LOT cheaper and lasts just as long. Plus, the installation time is significantly less, and the driveway is available for use immediately afterward.

Crusher Run Gravel

Best for: residential driveways and parking pads, walkways, under patio pavers, and as an asphalt base.

Crusher run gravel runs through a crusher set to a certain size. The crusher can do large, chunky gravel, or smaller, smoother gravel. Typical sizes include ¾ inch, 1 inch, 1.5 inches, and 2 inches.

The primary benefit of crusher run gravel is that this type of gravel includes “fines,” smaller pieces of rock and rock dust. Together with the larger pieces, this gravel option packs down well to create a tightly woven finish that’s more pleasant to drive and walk on. M&R Dirt Works recommends vibration compaction to reduce the amount of ongoing maintenance for your driveway.

Another benefit of crusher run gravel is that it makes a great base for asphalt paving. If you choose an asphalt driveway, a base of crusher run gravel helps the driveway stay smoother, longer.

#4s (Number Fours)

Best for: French drains, sub-grade for concrete slabs, and driveways/roads that need to support larger vehicles.

#4s (pronounced “number fours”) gravel ranges from 1.5 inches to 2 inches. The gravel is crushed and then sifted to remove the fines. This gravel isn’t a good fit for a typical driveway but can be used for commercial applications to support heavy trucks and machinery. It’s also the best choice for French drains, as the large gravel size allows water to filter through easily.

The primary benefit of #4s for homeowners is saving money on concrete applications. A base of #4s allows wet concrete to filter through and fill gaps. This creates a thicker slab that needs less concrete.

57s or #57

Best for: drainage, including French drains and pipe trenches, hardscapes, and landscaping projects.

57s can be unstable and easily wash out. When crusher run is added and compacted, it makes a more stable surface.

57s are chunks of gravel ranging in .5 inch to 1 inch in diameter that is screened to remove finer particles. This stone option is also washed to remove excess dust. The result is a sharp, elongated stone that looks great in landscapes. This gravel isn’t a great choice for driveways as it shifts and doesn’t compact over time. Additionally, while this gravel resists mud buildup, it can roll under a person’s weight when walked on.

Fines

Fines are the smaller particles and dust that are screened out from #4s and 57s gravel. When a homeowner is having trouble with larger gravel washing out, and doesn’t want to spend as much as initial installation, M&R Dirt Works can bring in a load of fines to help with compaction. Our team will spread a thick layer of fines and run a vibratory roller over the surface. The result is a smoother and more stable driveway.

How Often Do I Need Fresh Gravel?

A well-compacted, well-maintained, crusher run gravel driveway can last up to 10 years. Most homeowners will be ready for a refresh around five years after initial installation. The time frame is dependent on maintenance, how well the driveway is maintained, and the type of vehicles using the driveway most often. It’s time for a refresh when there are potholes, pooling water, or muddy areas on the drive.