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Pressure Washing Guide: Cost, Tips & What to Clean
Lumberama Editorial Team, Exterior Cleaning & Maintenance Specialists Nov 26, 2026 7 min read

What to Pressure Wash
Driveways and walkways: Concrete, pavers, and stone. PSI: 3,000-4,000. Removes oil, dirt, algae, mildew. Frequency: annually.
Decks and patios: Wood decks: 1,500-2,000 PSI max (higher damages wood). Composite decks: 1,500-2,000 PSI. Concrete patios: 3,000-4,000 PSI. Always follow manufacturer guidelines for composite.
House siding: Vinyl: 1,300-1,600 PSI (or soft wash). Wood: 1,200-1,500 PSI (low pressure to avoid damage). Brick: 1,500-2,000 PSI. Stucco: 1,200-1,500 PSI (soft wash preferred).
Fences: Wood: 1,500-2,000 PSI. Vinyl: 1,300-1,600 PSI.
Other: Gutters: 1,300-1,600 PSI. Outdoor furniture: 1,000-1,500 PSI. Garage floor: 3,000-4,000 PSI. Roof: soft wash ONLY (pressure damages shingles). Pool deck: 3,000 PSI.
NEVER pressure wash: Asphalt roofing shingles. Old mortar/grout (can dislodge). Painted surfaces (unless stripping paint). Windows (can break seals). Electrical panels, meters, or outlets.
Equipment
Electric pressure washers: PSI: 1,300-2,300. Best for light-duty (furniture, cars, siding). Cost: $100-$300. Pros: quiet, lightweight, easy to use. No maintenance. Cons: less powerful, not for heavy concrete stains.
Gas pressure washers: PSI: 2,500-4,200. Best for heavy-duty (driveways, concrete, commercial). Cost: $250-$700. Pros: powerful, portable (no cord). Cons: louder, heavier, requires maintenance (oil, winterization).
Nozzle tips (color-coded): Red (0°): most concentrated, never use on surfaces you want to keep. Yellow (15°): heavy cleaning, concrete. Green (25°): general purpose, most common. White (40°): gentle, siding, vehicles. Black (65°): soap/detergent application. Turbo nozzle: spinning 0° tip that covers more area.
Cost
Professional pressure washing: Driveway: $100-$300. House siding: $200-$500 (1,500-2,500 sq ft). Deck: $100-$300. Fence: $100-$300. Patio: $50-$150. Full exterior (house + driveway + deck + patio): $300-$800.
Buying vs renting: Electric washer (own): $100-$300. Gas washer (own): $250-$700. Rental (per day): $50-$100. Rental makes sense if you only wash 1-2x/year. Buying makes sense at 3+ uses/year.
Detergents: General purpose: $10-$20/gallon. Concrete cleaner: $10-$25. House wash (soft wash): $15-$30. Always use pressure washer-safe detergents (not bleach or household cleaners in the machine).
Frequently Asked Questions
Lumberama Editorial Team
Exterior Cleaning & Maintenance Specialists
Expert contributor at Lumberama, covering lumber selection, construction techniques, and building material insights.
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