What base depth do you need for a paver driveway in the Lower Mainland?

For paver driveways in Metro Vancouver, you need a minimum of 10-12 inches of compacted granular base — significantly deeper than patios or walkways. This depth is critical because driveways must support vehicle loads (typically 4,000+ pounds per axle) while managing the Lower Mainland's heavy rainfall and clay-heavy soils.

The base depth breaks down into specific layers for optimal performance. Start with 10-12 inches of 3/4-inch crushed gravel (also called road base or crusher run) compacted in 2-inch lifts using a plate compactor. Each lift must achieve 95%+ compaction before adding the next layer. Over this compacted base, add 1 inch of concrete sand (bedding sand) that gets screeded perfectly level for paver placement. The pavers themselves must be 80mm (3-1/8 inches) thick for vehicular traffic — standard 60mm pavers used for patios will crack under car and truck loads.

Metro Vancouver's climate makes proper base depth even more critical than in drier regions. The Lower Mainland receives over 1,200mm of annual rainfall, with 70% falling between October and March. Clay soils prevalent in Surrey, Richmond, Delta, and Langley don't drain well and become unstable when saturated. A shallow base (6-8 inches) might work temporarily in summer, but Vancouver's winter rains will saturate inadequate base material, causing the subgrade clay to soften and the driveway pavers to settle unevenly, creating dangerous dips and trip hazards.

Proper drainage design is equally important as base depth. Install the driveway with a minimum 2% slope (1/4 inch per foot) to shed water away from the house and toward the street or a drainage system. For driveways longer than 50 feet or in areas where water cannot drain to daylight, install a perforated drain pipe at the low point, surrounded by clear drain rock, with an outlet to the municipal storm drain. Place geotextile fabric between the clay subgrade and gravel base to prevent clay migration that would clog the base and destroy drainage over time.

Edge restraints are mandatory along all unconfined edges — typically the sides and far end of the driveway where pavers meet lawn or landscaping. Use commercial-grade aluminum or steel edge restraint spiked into the compacted base every 12 inches. Without proper edge restraint, vehicle loads cause pavers to spread outward, creating gaps and an unstable driving surface.

This is definitely a professional installation. DIY driveway attempts typically fail within 1-2 years because homeowners underestimate the excavation depth, lack proper compaction equipment, or skip critical details like edge restraints and drainage. A properly installed 500-800 sq ft paver driveway in Metro Vancouver runs $10,000-$24,000, but it will last 25+ years with minimal maintenance. Removing and disposing of existing concrete or asphalt adds $2,000-$5,000 to the project cost.

Need help finding an interlock installer? Vancouver Interlock can match you with experienced driveway contractors from the Vancouver Construction Network who understand Lower Mainland soil conditions and drainage requirements.

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