What kind of gravel should you use to refresh a driveway?

Two loads can carry the same size label and behave differently under tires. If you’re refreshing the gravel you drive on, tell the supplier you need an exposed driving surface and ask about the whole mix. The name on the price list is the start of that conversation.

Ask for gravel intended as a driving surface

Surface gravel has a blend of stone, sand-sized grains and smaller particles called fines. The stones provide strength, while the smaller particles fill spaces and help the surface bind. A suitable mix for an exposed gravel surface may differ from a gravel base intended to sit under pavement. Federal Highway Administration gravel road guide on surface gravel

Clear crush is another product you may see in a yard. It contains stones of a similar size and is used in drainage layers, where the spaces between the stones give water room to pass through. If you want a driving surface that packs together, ask about a blend designed to bind. Indigenous Services Canada’s B.C. Fill Management Guide, Federal Highway Administration gravel road guide on surface gravel

Ask what the size label tells you

A product called “19 mm minus,” or “¾-inch minus,” is named for its nominal top size. The material also contains smaller particles. Ask what proportion of the blend is fine enough to help bind the surface. B.C.’s resource-road field study used a 19 mm minus surfacing material that had a separate specification for fines, illustrating why the size label alone gives only part of the picture. B.C. resource-road field study

If the current driveway has held up well, share the old invoice or a photo of the gravel next to a ruler. If it has stayed loose around a turn or under a delivery truck, share that detail too. It helps the supplier understand whether you want to match a working surface or choose a mix better suited to how you use the property.

Confirm the product before booking delivery

Ask the supplier three questions before paying for a load.

1. Is this mix intended for an exposed driveway or parking area?
2. What sizes and fines does it contain?
3. How is it sold, and what quantity would cover the agreed area at the planned depth?

If you already have a pile on site, send the product name from the delivery ticket and a photo of the material. For gravel spreading in the Fort St. John area, include those details in your quote request so we can confirm the area and how the gravel will be supplied.

Sources

• Federal Highway Administration and South Dakota LTAP, Gravel Roads Construction and Maintenance Guide · Section 3 explains surface gravel, base material and the role of fines.
• Indigenous Services Canada, British Columbia First Nations’ Fill Management Guide · The fill types table describes road base and clear crush.
• FPInnovations, Long-Term Study of the Cost Effectiveness of Stabilized and Untreated Aggregate-Surfaced Forest Service Roads · The B.C. trial describes the surfacing mix and its gradation.