Power Washing Cost Guide 2026
Surface-by-surface pricing, correct PSI by material, soft wash vs. pressure wash explained, and 7 red flags — including the one mistake that voids your roof warranty.
2026 Power Washing Price Ranges by Surface
| Surface / Scope | Low | High | Correct PSI | Notes |
|---|---|---|---|---|
| Concrete driveway (up to 500 sq ft) | $100 | $250 | 2,500–3,500 PSI | Standard two-car driveway; hot water extraction for oil stains; sealing available as add-on ($0.25–$0.50/sq ft) |
| Concrete driveway (1,000+ sq ft) | $200 | $400 | 2,500–3,500 PSI | Long driveways or large pads; includes surface detergent pre-treatment for heavy staining |
| Composite or wood deck (up to 500 sq ft) | $100 | $250 | 500–1,500 PSI | Low pressure required; high PSI damages wood fibers; composite decking is more forgiving but still needs care |
| Composite or wood deck (500–1,000 sq ft) | $175 | $350 | 500–1,500 PSI | Includes railings and stairs; soft wash recommended; often done ahead of deck staining or sealing |
| House siding, vinyl or aluminum (1,500–2,500 sq ft) | $150 | $350 | Soft wash 40–500 PSI | Soft wash with algaecide surfactant is standard for siding; high pressure forces water behind panels and causes mold |
| House siding, brick or stucco (1,500–2,500 sq ft) | $200 | $500 | 1,500–2,500 PSI | Brick and mortar joints require care; damaged mortar must be repaired first or water intrusion results; test pressure on small section |
| Fence (200 linear ft, wood) | $100 | $250 | 1,000–2,000 PSI | Wood fences require moderate pressure; high pressure causes splintering and grain raising; prep for staining |
| Roof (soft wash, 1,500–2,500 sq ft) | $300 | $700 | Soft wash only (under 100 PSI) | Algae, lichen, and moss removal; high pressure on shingles voids manufacturer warranty and removes granules; only soft wash is appropriate for asphalt shingles |
| Patio pavers or concrete (up to 400 sq ft) | $75 | $200 | 2,000–3,000 PSI | Sand between pavers may need reapplication after cleaning; surface cleaning attachment (rotary head) gives even results |
| Pool deck or patio, 400–800 sq ft | $125 | $300 | 2,000–3,000 PSI | Slip-resistant coatings may be damaged by very high pressure; confirm coating type before booking |
| Commercial storefront / walkways (per linear ft) | $1 | $4 | 2,500–4,000 PSI | Per linear foot of sidewalk or storefront; grease removal requires hot water pressure washing; varies widely by soiling level |
Correct Method by Surface Type
Using the wrong pressure on a surface is the most common and costly power washing mistake.
| Surface | Correct Method | Max Safe PSI | Why |
|---|---|---|---|
| Asphalt shingles | Soft wash ONLY | <100 PSI | High pressure blasts off granules, voids warranty, causes premature aging; soft wash + algaecide kills moss/algae without damage |
| Vinyl siding | Soft wash preferred | <500 PSI | High pressure forces water under panels; triggers mold behind siding; soft wash surfactant + low-pressure rinse is correct method |
| Wood deck/fence | Low pressure | 500–1,500 PSI | High pressure raises grain, causes splintering, and damages wood fiber; clean then let dry 48 hrs before staining |
| Composite decking | Low-to-moderate | 1,000–2,500 PSI | More durable than wood but still susceptible to surface damage at very high pressure; follow manufacturer spec |
| Concrete driveway | Moderate-to-high | 2,500–4,000 PSI | Dense concrete handles high pressure well; surface cleaning rotary head gives streak-free results; hot water for oil |
| Brick / mortar | Moderate, caution | 1,500–2,500 PSI | Old or damaged mortar joints fail under high pressure; water intrusion causes interior damage; inspect mortar first |
| Stucco | Low-to-moderate | 1,200–1,800 PSI | Stucco is porous and can absorb water; cracks in stucco must be sealed before washing; high pressure widens cracks |
| Pavers (brick/stone) | Moderate | 2,000–3,000 PSI | Joint sand will be washed out; budget to re-sand and re-seal after cleaning; surface cleaner attachment recommended |
7 Red Flags When Hiring a Power Washing Company
- ️Using high-pressure washing on your roof — this is the single most common and damaging mistake in power washing; high-pressure washing asphalt shingles blasts off the protective granules, voids the manufacturer warranty, accelerates aging, and can void your insurance coverage; any company proposing to pressure wash (not soft wash) your roof should be immediately disqualified
- ️No pre-inspection before setting pressure — professional power washers assess surface type, condition, age, and soiling level before selecting nozzle size and pressure; a contractor who sets up at a single pressure setting without discussion is not adjusting technique to your surfaces
- ️Forcing water into gaps — high pressure directed at siding seams, window gaps, door frames, or electrical outlets drives water into wall cavities, causing insulation damage and mold growth; technicians should angle spray away from gaps, not directly into them
- ️No proof of liability insurance — power washing involves significant risk of property damage; incorrectly set pressure removes paint, damages wood, etches concrete, and cracks stucco; a surface cleaning error can cost thousands; require a certificate of general liability insurance before work begins
- ️No surface detergents or pre-treatment for biological growth — pressure alone doesn't kill algae, mold, or lichen (the organisms regrow within weeks); professional soft wash uses algaecide surfactants that kill the roots; companies that just spray water and call it a wash will see regrowth in 4–8 weeks
- ️Quoting price before seeing the property — power washing pricing depends on surface condition, access, square footage, number of stories (2nd-story work requires extension wands), and soiling level; a fixed phone quote that doesn't account for these factors will change on-site
- ️No dwell time for chemical application — soft wash detergents must dwell on the surface (5–15 minutes depending on product) to break down algae and mold before rinsing; companies rushing through a job skip dwell time, which significantly reduces effectiveness and longevity
Power Washing FAQs
What's the difference between power washing and pressure washing?
Technically, power washing uses heated water (120°–200°F) while pressure washing uses cold water at high pressure. In practice, the terms are often used interchangeably by contractors. Hot water is more effective for grease, oil, and gum removal (common for commercial work); cold water is standard for residential surfaces. What matters more than the terminology is the PSI (pounds per square inch) used and whether a surfactant is applied — these determine cleaning effectiveness and surface safety.
What is soft washing, and when should it be used instead of pressure washing?
Soft washing uses very low pressure (under 100 PSI — about the same as a garden hose) combined with algaecide surfactants to clean surfaces without mechanical force. It's the correct method for: asphalt shingles (required — high pressure destroys them), vinyl siding (high pressure forces water under panels), painted surfaces, and older brick with soft mortar. The surfactants do the work, not the pressure. Any company proposing pressure washing your roof does not know what they're doing.
How much does it cost to power wash a house?
A 1,500–2,500 sq ft house exterior (vinyl or aluminum siding) typically costs $150–$350 for a soft wash. Brick adds complexity ($200–$500). Multi-story homes add 30–50% because extension wands are needed for upper floors and setup takes longer. If you're bundling driveway + deck + siding in one visit, many companies offer package discounts of 10–20%. Most residential power washing jobs for an average home run $200–$600 all-in depending on what's included.
How often should I have my driveway and siding power washed?
Most homes benefit from annual power washing for driveways and every 1–2 years for siding. In humid climates (Southeast U.S., Pacific Northwest), algae and mold grow faster and may require more frequent cleaning. Driveways in climates with winter road salt see faster staining from salt and de-icing chemicals. Soft-washed roofs with algaecide treatment typically stay clean for 2–5 years before regrowth.
Can power washing damage concrete, wood decks, or siding?
Yes — incorrect pressure damages all three. Concrete can be etched or surface-pitted by pressure that's too high for its cure strength (older driveways are more vulnerable). Wood decks develop raised grain, splintering, and fiber damage above 1,500 PSI for most softwoods. Vinyl siding at high pressure forces water into wall cavities and seams. The solution is hiring contractors who calibrate pressure to the surface — not contractors who use one setting for everything.
Find Power Washing Services in Your City
Browse all cities on our power washing directory →
Ready to Book a Power Wash?
Compare verified power washing companies in your area. Every listing on ProList Local includes verified reviews, service area, and equipment details.
Find Power Washers Near You →Free quotes. No obligation. Soft wash specialists available.