How Often Should You Pressure Wash Your Driveway in Northern Virginia?

Why Northern Virginia Driveways Get Dirty Fast

Our region's combination of humidity, tree cover, and clay-heavy soil creates ideal conditions for driveway staining:

• Algae and mildew — that green or black tint on shaded sections
• Tannin stains — brown or red streaks from oak, walnut, and maple leaves
• Rust — from irrigation water and metal furniture
• Oil and tire marks — especially in front of garage doors
• Efflorescence — the white chalky film that migrates up through the concrete

Our Recommended Schedule

• Every 12 months — homes with heavy shade, mulched beds directly against the driveway, or visible algae within a year of cleaning
• Every 18-24 months — most sun-exposed suburban driveways in Ashburn, Chantilly, and South Riding
• As needed — after major staining events (large oil leak, tree damage, construction)

What Professional Driveway Cleaning Includes

1. Pre-treatment — degreaser on oil spots, algaecide on green/black areas
2. Surface cleaning — a rotating surface cleaner that leaves no stripes
3. Edge detail — a wand along seams, edges, and areas the surface cleaner can't reach
4. Post-treatment — a light algaecide rinse that keeps concrete cleaner longer

DIY vs. Professional

A consumer pressure washer can clean concrete, but two things go wrong most often:

• Wand stripes — visible lines from uneven passes
• Regrowth in weeks — without an algaecide, the stain returns as soon as humidity rises

Professional equipment (4+ GPM, surface cleaner, algaecide) is what makes the results last a year or more instead of a month.