What Is Road Crush? Calgary Driveway & Base Material Guide
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Road crush (also called road base or crushed aggregate) is a blend of crushed rock
and stone dust that compacts tightly when packed down. Unlike decorative rock which sits loose, road crush locks together when compacted — making it the go-to base
material for any project that needs a stable, load-bearing surface.
Common uses in Calgary yards and properties:
Driveways — Road crush is the most popular driveway material in Calgary. It drains
well, handles freeze-thaw cycles better than asphalt, and costs a fraction of paving.
A properly compacted road crush driveway can last many years with minimal maintenance.
Under patios and pavers — Before laying any patio stones or interlocking pavers, you
need a compacted aggregate base. Road crush provides the stable foundation that
prevents your patio from shifting or sinking over Calgary winters.
Pathways and walkways — Compacted road crush creates a firm, clean surface for
garden paths, side yards, and utility areas.
Drainage and grading — Crushed aggregate is used around foundations, French drains, and low spots to improve drainage and prevent water pooling.
How much do you need?
One cubic yard covers approximately 100 square feet at 3 inches deep — the
recommended depth for a driveway base layer. For a standard double driveway
(roughly 20 x 40 feet), you'd typically need 8–10 yards.
