How much does pressure washing before painting add to the overall cost in Metro Vancouver?

Pressure washing before exterior painting typically adds $500–$1,500 to your total project cost in Metro Vancouver, but it's absolutely essential for paint adhesion and longevity in our wet climate.

Pressure washing is not an optional add-on for exterior repainting in Metro Vancouver — it's a mandatory first step that directly affects whether your new paint job lasts 3 years or 15 years. The marine climate creates ideal conditions for mould, mildew, algae, and dirt accumulation that must be completely removed before any paint can properly adhere to the surface.

Cost breakdown for pressure washing in Metro Vancouver:

• Average house (1,500–2,500 sq ft exterior): $500–$1,000 including cleaning solution


• Large or complex homes: $800–$1,500


• Townhouse or smaller home: $300–$600


• Deck and fence washing: $200–$500 additional


• Heavy mould treatment: Add $200–$400 for specialized cleaning solutions

The process involves much more than just spraying water. Professional pressure washing for paint prep includes applying a mould-killing solution (sodium hypochlorite or specialized biocide), allowing proper dwell time for the chemicals to work, then pressure washing at the correct PSI to remove contaminants without damaging the surface. Simply pressure washing with water alone will not kill mould spores — they'll grow back through your new paint within months.

Why pressure washing is essential in Metro Vancouver's climate: Our persistent humidity and rainfall create a perfect environment for biological growth on exterior surfaces. North-facing walls, areas shaded by trees, and surfaces near ground level develop green or black mould, mildew, and algae within 1–2 years. Painting over these contaminants guarantees rapid paint failure — the mould continues growing underneath and pushes the new paint film off the surface. Professional contractors know that skipping proper surface cleaning is the number one cause of premature paint failure in our region.

What affects pressure washing costs:

• Surface material: Stucco requires lower pressure than wood siding to avoid damage


• Contamination level: Heavy mould growth requires stronger cleaning solutions and more time


• Access difficulty: Two-storey homes and areas requiring ladder work cost more


• Additional treatments: Rust stains, efflorescence on stucco, or heavy dirt buildup need specialized cleaning


• Drying time: Surfaces must be completely dry for 24–48 hours before painting, which affects scheduling

Professional vs. DIY pressure washing: While you can rent a pressure washer for $75–$150 per day in Metro Vancouver, professional cleaning is usually worth the investment. Contractors have commercial-grade equipment, know the correct cleaning solutions for different contaminants, understand proper PSI settings for each surface type, and can identify areas that need wood repair or caulking before painting. Using too high pressure can damage wood siding, drive water behind the surface, or etch stucco.

Most reputable painting contractors include pressure washing in their exterior painting quotes rather than charging separately. If you're getting quotes that seem unusually low, ask specifically whether pressure washing and mould treatment are included — some contractors cut this corner to reduce their bid, which inevitably leads to paint failure within 2–3 years.

When to hire a professional: Any exterior repainting project should include professional pressure washing, especially if you see visible mould, algae, or significant dirt buildup. The cost of proper surface preparation is minimal compared to having to repaint in 3 years instead of 12–15 years because the prep work was inadequate.

Need help finding a painting contractor who includes proper surface preparation? Vancouver Paint Contractors can match you with experienced professionals who understand Metro Vancouver's unique climate challenges.