Roof Cleaning Cost Calculator
Soft-wash roof cleaning typically prices at $0.40–$0.60 per square foot due to safety, chemical and time. WashCalc accounts for all three.
Before you send the roof number
Roofs price on pitch and access far more than on area, and the calculator above cannot see either. The roof cleaning cost guide covers what actually moves the price, with worked examples at light, moderate and heavy condition. Roof work rarely sells alone — size the walls on the house washing cost guide, total the visit with the pressure washing estimate calculator, and send it on the quote template, whose exclusions block matters more on roofs than on any other surface.
How this price is calculated
A transparent two-signal model so you can defend the number to your customer.
Rate-based price
Area × surface rate × condition multiplier. This is your market-friendly anchor.
Cost-plus price
(Labor + chemical + travel) ÷ (1 − target margin). Protects your profit.
The recommended price
The higher of the two — and never below your minimum charge.
Factors that affect job price
Roofs and decks command higher per-sq-ft rates than driveways.
Heavy mildew, oil stains and algae mean more dwell time and chemical.
Long drives, second stories and tight access raise the real job cost.
FAQ
👉 Learn how to price jobs — full 2026 pressure washing pricing guide.