Road crush is the foundation material that everything else sits on. Before you lay decorative rock, pour concrete, install pavers, or build a driveway — road crush goes down first. Our 25mm road crush is a blend of crushed rock, sand, and natural fines that compacts into a dense, interlocked base that handles vehicle loads, sheds water, and stays stable through Calgary's freeze-thaw cycles season after season. It's the most important material in any hardscaping project and the one that determines whether your finished surface holds up or fails.
What it is
25mm road crush is a processed aggregate made from crushed rock combined with sand and fine particles. Unlike clean washed rock, road crush contains fines — those small particles are what make it compact and bind together under load. When properly compacted, it forms a near-solid base that's stable enough to drive heavy equipment on and rigid enough to support paving stone, concrete, and decorative surfaces without settling.
What it's used for
- Driveway base layer — the single most important use. Every driveway needs a compacted road crush base before any surface material goes down. Skipping this step is why driveways rut, sink, and shift
- Parking pads and RV pads — builds a load-bearing base that handles the weight of vehicles, trailers, and heavy equipment without sinking
- Paving stone and interlock sub-base — the standard specified base under all paving stone installations in Calgary. Typically 4–6 inches compacted before bedding sand and pavers
- Pathway and walkway base — creates a firm, level sub-base that prevents pathways from settling unevenly over time
- Road and lane construction — the go-to base material for rural roads, acreage laneways, and construction site access roads
- Shed and outbuilding base — compacted road crush under a shed creates a stable, level, frost-resistant foundation
- Retaining wall base — used as a compacted footing layer under retaining wall base courses
- Backyard rink base — compacts flat and drains well, creating an ideal surface for a backyard skating rink pad
Why base preparation matters in Calgary
Calgary's ground moves. Frost goes deep in winter, and the spring thaw shifts anything that isn't properly anchored in a compacted base. A 4–6 inch layer of properly compacted road crush below your surface material is what keeps driveways level, patios flat, and pathways even year after year. It's not visible once the job is done — but every homeowner who skipped it notices it by the second spring.
How deep should you go?
- Pedestrian pathways — 4 inches compacted
- Residential driveways — 4 to 6 inches compacted
- Paving stone base — 6 inches compacted minimum
- Heavy vehicle areas and commercial — 8 inches or more compacted
How much do you need?
For a 6-inch base layer, budget roughly 1.85 cubic yards per 100 square feet. Use our free calculator for an exact number.
Where we deliver
Same-day bulk delivery across Calgary, Airdrie, Chestermere, Cochrane, Okotoks, and Langdon.
📞 403-510-9011