Should I pressure-wash my Vancouver paver driveway every year?

Annual pressure washing is generally unnecessary for most Vancouver paver driveways and can actually cause damage if done improperly. Most concrete paver driveways in Metro Vancouver benefit from pressure washing every 2-3 years, or when moss, algae, and staining become noticeable.

Pressure washing frequency depends on your specific conditions. North-facing driveways, those shaded by trees, or properties in heavily wooded areas of North Vancouver, West Vancouver, or Burnaby may need annual cleaning due to accelerated moss and algae growth. South-facing driveways with good sun exposure typically stay cleaner longer and may only need pressure washing every 3-4 years. Vancouver's persistent moisture and mild temperatures create ideal conditions for organic growth, but concrete pavers themselves don't accumulate dirt and grime as quickly as they would in dustier climates.

The bigger maintenance priority in Metro Vancouver is joint sand replenishment. Vancouver's heavy rainfall (over 1,200mm annually, with 70% falling October through March) gradually erodes polymeric sand from paver joints. Empty or partially empty joints allow moss penetration, weed growth, and paver shifting under vehicle loads. Inspect your joint sand every spring and fall — if joints appear hollow, have moss growing through them, or you can easily scrape sand out with a screwdriver, it's time to re-sand regardless of when you last pressure washed.

When you do pressure wash, use proper technique to avoid damage. Use a pressure washer rated 1,500-2,500 PSI maximum — higher pressure can damage paver surfaces, especially textured or tumbled pavers. A rotating surface cleaner attachment prevents the striping pattern that occurs with a standard wand and provides more even cleaning. Always sweep loose debris first, work in sections, and maintain consistent distance from the surface. Never use pressure over 2,500 PSI on pavers, and avoid getting too close to joint sand if it's in good condition.

Time your pressure washing strategically. The best window is late spring (May-June) after the heavy rains have stopped but before summer growth accelerates. This gives you a clean surface for the dry season and allows time for any disturbed joint sand to settle before fall rains return. If you're planning to re-sand joints or apply sealer, pressure washing should be done first, followed by at least 48 hours of dry weather before proceeding.

Consider professional cleaning for heavily stained driveways. Oil stains, rust stains, and embedded organic matter may require specialized cleaners, hot water pressure washing, or surface restoration techniques beyond standard homeowner equipment. Professional cleaning typically runs $0.50-$1.50 per square foot and includes proper joint sand protection and post-cleaning inspection.

Signs your driveway needs cleaning now: visible moss or algae growth (especially the black streaks common on north-facing surfaces), slippery conditions when wet, oil stains, or significant color variation between clean and dirty areas. If your driveway still looks relatively clean and joints are in good condition, you can safely wait another year.

Need help finding an interlock maintenance professional? Vancouver Interlock can match you with experienced contractors who understand Metro Vancouver's unique climate challenges and proper paver care techniques.