Spring Pressure Washing: Restore Your Home's Curb Appeal

Why spring is the best time to pressure wash

Winter deposits a cocktail of grime on every exterior surface: road salt splash on foundations, leaf tannin stains on concrete, green algae on north-facing siding, and mildew under eaves. Left through summer, these contaminants etch into surfaces — algae roots penetrate vinyl siding, and salt crystals damage concrete pores. Spring temperatures (50–80°F) are ideal for pressure washing: warm enough for cleaning solutions to work effectively, cool enough to prevent rapid drying that leaves streaks.

What to pressure wash and in what order

• Roof and gutters first — dirty runoff flows downward, so start at the top. Use soft wash (low pressure + cleaning solution) on roofing to avoid shingle damage
• Siding second — 1,200–1,500 PSI for vinyl, 1,500–2,000 PSI for brick. Always spray at a downward angle to avoid driving water behind siding
• Driveway and walkways third — 3,000–4,000 PSI with a surface cleaner attachment for even results. Pre-treat oil stains with degreaser
• Deck and patio last — 500–1,200 PSI for wood (higher pressure gouges softwood). Follow up with a brightener before staining
• Fence — if you plan to restain, pressure wash 1–2 weeks before to allow the wood to dry completely

DIY vs professional pressure washing

• Rental machine — $50–$100/day, consumer-grade 2,000–3,000 PSI. Adequate for driveways. Risk of damage to siding, decks, and windows without experience
• Professional service — $200–$600 for a whole-house wash including siding, driveway, and walkways. Commercial equipment (4,000+ PSI with adjustable pressure), proper nozzles, and surfactant application. A pro crew finishes a full house in 2–4 hours vs a full weekend DIY

Common mistakes that cause damage

• Using too high pressure on vinyl siding (forces water behind panels, causing mold)
• Holding the nozzle too close to wood surfaces (gouges and splinters the grain)
• Pressure washing windows with a zero-degree nozzle (cracks glass and destroys seals)
• Skipping pre-treatment — pressure alone doesn't kill mildew; it just removes the visible layer. Without a biocide, it grows back within weeks
• Washing a deck and staining the same day — wood needs 48–72 hours to dry before stain adhesion is reliable

When to call a professional

Hire a pro if your house is taller than one story (ladder work + pressure equipment is genuinely dangerous), if you have painted or stained surfaces that could be damaged by excessive pressure, or if you've never operated a pressure washer. A misdirected 4,000 PSI stream cuts through skin — this isn't a garden hose. For homes with lead paint (pre-1978), federal law requires containment of wash water — only certified contractors should handle this.