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Choosing Materials · 7 min

How to Choose Gravel and Drain Rock for a Project

Compaction, drainage and appearance call for different aggregate types.

Updated August 13, 2026 · By Specialty Soils

Quick answer

The words rock and gravel cover materials that behave very differently. Start with the job the material needs to perform.

The words rock and gravel cover materials that behave very differently. Start with the job the material needs to perform.

For compacted base, fines matter

Crushed material with fines can knit together and compact more tightly than clean drain rock.

For drainage, void space matters

Clean larger aggregate leaves open pathways for water. It is used differently from compactable crushed material.

For paths and drive areas, think about finish and movement

A compacted surface usually needs a different gradation than decorative rock.

Weight affects delivery

Rock is heavy. Truck capacity can be limited by legal and safe weight before the truck runs out of volume.

Prepare the base

Good material cannot compensate for a poorly prepared subgrade on a driveway, path or drainage project.

Specialty Soils notes
  • 5/8-inch minus is a compactable crushed product with fines.
  • 2-inch drain rock is a much larger drainage aggregate.
  • Send photos or plans if you are unsure which category fits.

Turn the guide into an order.

Use the soil finder, open a product calculator, or send Specialty Soils your project details.

Frequently asked questions

How do I know which Specialty Soils product fits my project?

Use the What Soil Do I Need tool, compare the products linked in this guide, or send us the project details for a recommendation.

Can I buy this material in bulk?

Many products are available in bulk, bagged, or both. The product page shows current formats and whether a firm online price is available.

Can Specialty Soils deliver it?

Bulk delivery is available depending on material, order size, access and destination. Exact delivery pricing is confirmed before scheduling.

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